; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 3
; RUN: opt -passes=irce -S -verify-loop-info -irce-skip-profitability-checks < %s 2>&1 | FileCheck %s

define void @test_inc_eq(ptr nocapture %a, ptr nocapture readonly %b, ptr nocapture readonly %c, i32 %N) {
; CHECK-LABEL: define void @test_inc_eq(
; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr readonly captures(none) [[B:%.*]], ptr readonly captures(none) [[C:%.*]], i32 [[N:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP16:%.*]] = icmp sgt i32 [[N]], 0
; CHECK-NEXT:    br i1 [[CMP16]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK:       for.body.preheader:
; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = call i32 @llvm.umin.i32(i32 [[N]], i32 512)
; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 0, [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP0]], label [[FOR_BODY_PREHEADER1:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
; CHECK:       for.body.preheader1:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.cond.cleanup.loopexit.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]]
; CHECK:       for.cond.cleanup.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       for.body:
; CHECK-NEXT:    [[I_017:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER1]] ]
; CHECK-NEXT:    [[CMP1:%.*]] = icmp ult i32 [[I_017]], 512
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[I_017]]
; CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[I_017]]
; CHECK-NEXT:    [[TMP2:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-NEXT:    br i1 true, label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; CHECK:       if.then:
; CHECK-NEXT:    [[SUB:%.*]] = sub i32 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017]]
; CHECK-NEXT:    [[TMP3:%.*]] = load i32, ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[SUB]], [[TMP3]]
; CHECK-NEXT:    store i32 [[ADD]], ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       if.else:
; CHECK-NEXT:    [[ADD6:%.*]] = add nsw i32 [[TMP2]], [[TMP1]]
; CHECK-NEXT:    [[ARRAYIDX7:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017]]
; CHECK-NEXT:    store i32 [[ADD6]], ptr [[ARRAYIDX7]], align 4
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       for.inc:
; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[I_017]], 1
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[INC]], [[N]]
; CHECK-NEXT:    [[TMP4:%.*]] = icmp ult i32 [[INC]], [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    [[TMP5:%.*]] = xor i1 [[TMP4]], true
; CHECK-NEXT:    br i1 [[TMP5]], label [[MAIN_EXIT_SELECTOR:%.*]], label [[FOR_BODY]]
; CHECK:       main.exit.selector:
; CHECK-NEXT:    [[INC_LCSSA:%.*]] = phi i32 [ [[INC]], [[FOR_INC]] ]
; CHECK-NEXT:    [[TMP6:%.*]] = icmp ult i32 [[INC_LCSSA]], [[N]]
; CHECK-NEXT:    br i1 [[TMP6]], label [[MAIN_PSEUDO_EXIT]], label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK:       main.pseudo.exit:
; CHECK-NEXT:    [[I_017_COPY:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
; CHECK:       postloop:
; CHECK-NEXT:    br label [[FOR_BODY_POSTLOOP:%.*]]
; CHECK:       for.body.postloop:
; CHECK-NEXT:    [[I_017_POSTLOOP:%.*]] = phi i32 [ [[INC_POSTLOOP:%.*]], [[FOR_INC_POSTLOOP:%.*]] ], [ [[I_017_COPY]], [[POSTLOOP]] ]
; CHECK-NEXT:    [[CMP1_POSTLOOP:%.*]] = icmp ult i32 [[I_017_POSTLOOP]], 512
; CHECK-NEXT:    [[ARRAYIDX_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    [[TMP7:%.*]] = load i32, ptr [[ARRAYIDX_POSTLOOP]], align 4
; CHECK-NEXT:    [[ARRAYIDX2_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    [[TMP8:%.*]] = load i32, ptr [[ARRAYIDX2_POSTLOOP]], align 4
; CHECK-NEXT:    br i1 [[CMP1_POSTLOOP]], label [[IF_THEN_POSTLOOP:%.*]], label [[IF_ELSE_POSTLOOP:%.*]]
; CHECK:       if.else.postloop:
; CHECK-NEXT:    [[ADD6_POSTLOOP:%.*]] = add nsw i32 [[TMP8]], [[TMP7]]
; CHECK-NEXT:    [[ARRAYIDX7_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    store i32 [[ADD6_POSTLOOP]], ptr [[ARRAYIDX7_POSTLOOP]], align 4
; CHECK-NEXT:    br label [[FOR_INC_POSTLOOP]]
; CHECK:       if.then.postloop:
; CHECK-NEXT:    [[SUB_POSTLOOP:%.*]] = sub i32 [[TMP7]], [[TMP8]]
; CHECK-NEXT:    [[ARRAYIDX3_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    [[TMP9:%.*]] = load i32, ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    [[ADD_POSTLOOP:%.*]] = add nsw i32 [[SUB_POSTLOOP]], [[TMP9]]
; CHECK-NEXT:    store i32 [[ADD_POSTLOOP]], ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    br label [[FOR_INC_POSTLOOP]]
; CHECK:       for.inc.postloop:
; CHECK-NEXT:    [[INC_POSTLOOP]] = add nuw nsw i32 [[I_017_POSTLOOP]], 1
; CHECK-NEXT:    [[EXITCOND_POSTLOOP:%.*]] = icmp eq i32 [[INC_POSTLOOP]], [[N]]
; CHECK-NEXT:    br i1 [[EXITCOND_POSTLOOP]], label [[FOR_COND_CLEANUP_LOOPEXIT_LOOPEXIT:%.*]], label [[FOR_BODY_POSTLOOP]], !llvm.loop [[LOOP0:![0-9]+]], !loop_constrainer.loop.clone [[META5:![0-9]+]]
;
entry:
  %cmp16 = icmp sgt i32 %N, 0
  br i1 %cmp16, label %for.body, label %for.cond.cleanup

for.cond.cleanup:
  ret void

for.body:
  %i.017 = phi i32 [ %inc, %for.inc ], [ 0, %entry ]
  %cmp1 = icmp ult i32 %i.017, 512
  %arrayidx = getelementptr inbounds i32, ptr %b, i32 %i.017
  %0 = load i32, ptr %arrayidx, align 4
  %arrayidx2 = getelementptr inbounds i32, ptr %c, i32 %i.017
  %1 = load i32, ptr %arrayidx2, align 4
  br i1 %cmp1, label %if.then, label %if.else

if.then:
  %sub = sub i32 %0, %1
  %arrayidx3 = getelementptr inbounds i32, ptr %a, i32 %i.017
  %2 = load i32, ptr %arrayidx3, align 4
  %add = add nsw i32 %sub, %2
  store i32 %add, ptr %arrayidx3, align 4
  br label %for.inc

if.else:
  %add6 = add nsw i32 %1, %0
  %arrayidx7 = getelementptr inbounds i32, ptr %a, i32 %i.017
  store i32 %add6, ptr %arrayidx7, align 4
  br label %for.inc

for.inc:
  %inc = add nuw nsw i32 %i.017, 1
  %exitcond = icmp eq i32 %inc, %N
  br i1 %exitcond, label %for.cond.cleanup, label %for.body
}

define void @test_inc_ne(ptr nocapture %a, ptr nocapture readonly %b, ptr nocapture readonly %c, i32 %N) {
; CHECK-LABEL: define void @test_inc_ne(
; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr readonly captures(none) [[B:%.*]], ptr readonly captures(none) [[C:%.*]], i32 [[N:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP16:%.*]] = icmp sgt i32 [[N]], 0
; CHECK-NEXT:    br i1 [[CMP16]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK:       for.body.preheader:
; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = call i32 @llvm.umin.i32(i32 [[N]], i32 512)
; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 0, [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP0]], label [[FOR_BODY_PREHEADER1:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
; CHECK:       for.body.preheader1:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.cond.cleanup.loopexit.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]]
; CHECK:       for.cond.cleanup.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       for.body:
; CHECK-NEXT:    [[I_017:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER1]] ]
; CHECK-NEXT:    [[CMP1:%.*]] = icmp ult i32 [[I_017]], 512
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[I_017]]
; CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[I_017]]
; CHECK-NEXT:    [[TMP2:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-NEXT:    br i1 true, label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; CHECK:       if.then:
; CHECK-NEXT:    [[SUB:%.*]] = sub i32 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017]]
; CHECK-NEXT:    [[TMP3:%.*]] = load i32, ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[SUB]], [[TMP3]]
; CHECK-NEXT:    store i32 [[ADD]], ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       if.else:
; CHECK-NEXT:    [[ADD6:%.*]] = add nsw i32 [[TMP2]], [[TMP1]]
; CHECK-NEXT:    [[ARRAYIDX7:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017]]
; CHECK-NEXT:    store i32 [[ADD6]], ptr [[ARRAYIDX7]], align 4
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       for.inc:
; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[I_017]], 1
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp ne i32 [[INC]], [[N]]
; CHECK-NEXT:    [[TMP4:%.*]] = icmp ult i32 [[INC]], [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP4]], label [[FOR_BODY]], label [[MAIN_EXIT_SELECTOR:%.*]]
; CHECK:       main.exit.selector:
; CHECK-NEXT:    [[INC_LCSSA:%.*]] = phi i32 [ [[INC]], [[FOR_INC]] ]
; CHECK-NEXT:    [[TMP5:%.*]] = icmp ult i32 [[INC_LCSSA]], [[N]]
; CHECK-NEXT:    br i1 [[TMP5]], label [[MAIN_PSEUDO_EXIT]], label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK:       main.pseudo.exit:
; CHECK-NEXT:    [[I_017_COPY:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
; CHECK:       postloop:
; CHECK-NEXT:    br label [[FOR_BODY_POSTLOOP:%.*]]
; CHECK:       for.body.postloop:
; CHECK-NEXT:    [[I_017_POSTLOOP:%.*]] = phi i32 [ [[INC_POSTLOOP:%.*]], [[FOR_INC_POSTLOOP:%.*]] ], [ [[I_017_COPY]], [[POSTLOOP]] ]
; CHECK-NEXT:    [[CMP1_POSTLOOP:%.*]] = icmp ult i32 [[I_017_POSTLOOP]], 512
; CHECK-NEXT:    [[ARRAYIDX_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    [[TMP6:%.*]] = load i32, ptr [[ARRAYIDX_POSTLOOP]], align 4
; CHECK-NEXT:    [[ARRAYIDX2_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    [[TMP7:%.*]] = load i32, ptr [[ARRAYIDX2_POSTLOOP]], align 4
; CHECK-NEXT:    br i1 [[CMP1_POSTLOOP]], label [[IF_THEN_POSTLOOP:%.*]], label [[IF_ELSE_POSTLOOP:%.*]]
; CHECK:       if.else.postloop:
; CHECK-NEXT:    [[ADD6_POSTLOOP:%.*]] = add nsw i32 [[TMP7]], [[TMP6]]
; CHECK-NEXT:    [[ARRAYIDX7_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    store i32 [[ADD6_POSTLOOP]], ptr [[ARRAYIDX7_POSTLOOP]], align 4
; CHECK-NEXT:    br label [[FOR_INC_POSTLOOP]]
; CHECK:       if.then.postloop:
; CHECK-NEXT:    [[SUB_POSTLOOP:%.*]] = sub i32 [[TMP6]], [[TMP7]]
; CHECK-NEXT:    [[ARRAYIDX3_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    [[TMP8:%.*]] = load i32, ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    [[ADD_POSTLOOP:%.*]] = add nsw i32 [[SUB_POSTLOOP]], [[TMP8]]
; CHECK-NEXT:    store i32 [[ADD_POSTLOOP]], ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    br label [[FOR_INC_POSTLOOP]]
; CHECK:       for.inc.postloop:
; CHECK-NEXT:    [[INC_POSTLOOP]] = add nuw nsw i32 [[I_017_POSTLOOP]], 1
; CHECK-NEXT:    [[EXITCOND_POSTLOOP:%.*]] = icmp ne i32 [[INC_POSTLOOP]], [[N]]
; CHECK-NEXT:    br i1 [[EXITCOND_POSTLOOP]], label [[FOR_BODY_POSTLOOP]], label [[FOR_COND_CLEANUP_LOOPEXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP6:![0-9]+]], !loop_constrainer.loop.clone [[META5]]
;
entry:
  %cmp16 = icmp sgt i32 %N, 0
  br i1 %cmp16, label %for.body, label %for.cond.cleanup

for.cond.cleanup:
  ret void

for.body:
  %i.017 = phi i32 [ %inc, %for.inc ], [ 0, %entry ]
  %cmp1 = icmp ult i32 %i.017, 512
  %arrayidx = getelementptr inbounds i32, ptr %b, i32 %i.017
  %0 = load i32, ptr %arrayidx, align 4
  %arrayidx2 = getelementptr inbounds i32, ptr %c, i32 %i.017
  %1 = load i32, ptr %arrayidx2, align 4
  br i1 %cmp1, label %if.then, label %if.else

if.then:
  %sub = sub i32 %0, %1
  %arrayidx3 = getelementptr inbounds i32, ptr %a, i32 %i.017
  %2 = load i32, ptr %arrayidx3, align 4
  %add = add nsw i32 %sub, %2
  store i32 %add, ptr %arrayidx3, align 4
  br label %for.inc

if.else:
  %add6 = add nsw i32 %1, %0
  %arrayidx7 = getelementptr inbounds i32, ptr %a, i32 %i.017
  store i32 %add6, ptr %arrayidx7, align 4
  br label %for.inc

for.inc:
  %inc = add nuw nsw i32 %i.017, 1
  %exitcond = icmp ne i32 %inc, %N
  br i1 %exitcond, label %for.body, label %for.cond.cleanup
}

define void @test_inc_slt(ptr nocapture %a, ptr nocapture readonly %b, ptr nocapture readonly %c, i32 %N) {
; CHECK-LABEL: define void @test_inc_slt(
; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr readonly captures(none) [[B:%.*]], ptr readonly captures(none) [[C:%.*]], i32 [[N:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP16:%.*]] = icmp sgt i32 [[N]], 0
; CHECK-NEXT:    br i1 [[CMP16]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK:       for.body.preheader:
; CHECK-NEXT:    [[SMIN:%.*]] = call i32 @llvm.smin.i32(i32 [[N]], i32 512)
; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = call i32 @llvm.smax.i32(i32 [[SMIN]], i32 0)
; CHECK-NEXT:    [[TMP0:%.*]] = icmp slt i32 0, [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP0]], label [[FOR_BODY_PREHEADER1:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
; CHECK:       for.body.preheader1:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.cond.cleanup.loopexit.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]]
; CHECK:       for.cond.cleanup.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       for.body:
; CHECK-NEXT:    [[I_017:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER1]] ]
; CHECK-NEXT:    [[CMP1:%.*]] = icmp ult i32 [[I_017]], 512
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[I_017]]
; CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[I_017]]
; CHECK-NEXT:    [[TMP2:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-NEXT:    br i1 true, label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; CHECK:       if.then:
; CHECK-NEXT:    [[SUB:%.*]] = sub i32 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017]]
; CHECK-NEXT:    [[TMP3:%.*]] = load i32, ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[SUB]], [[TMP3]]
; CHECK-NEXT:    store i32 [[ADD]], ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       if.else:
; CHECK-NEXT:    [[ADD6:%.*]] = add nsw i32 [[TMP2]], [[TMP1]]
; CHECK-NEXT:    [[ARRAYIDX7:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017]]
; CHECK-NEXT:    store i32 [[ADD6]], ptr [[ARRAYIDX7]], align 4
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       for.inc:
; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[I_017]], 1
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp slt i32 [[INC]], [[N]]
; CHECK-NEXT:    [[TMP4:%.*]] = icmp slt i32 [[INC]], [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP4]], label [[FOR_BODY]], label [[MAIN_EXIT_SELECTOR:%.*]]
; CHECK:       main.exit.selector:
; CHECK-NEXT:    [[INC_LCSSA:%.*]] = phi i32 [ [[INC]], [[FOR_INC]] ]
; CHECK-NEXT:    [[TMP5:%.*]] = icmp slt i32 [[INC_LCSSA]], [[N]]
; CHECK-NEXT:    br i1 [[TMP5]], label [[MAIN_PSEUDO_EXIT]], label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK:       main.pseudo.exit:
; CHECK-NEXT:    [[I_017_COPY:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
; CHECK:       postloop:
; CHECK-NEXT:    br label [[FOR_BODY_POSTLOOP:%.*]]
; CHECK:       for.body.postloop:
; CHECK-NEXT:    [[I_017_POSTLOOP:%.*]] = phi i32 [ [[INC_POSTLOOP:%.*]], [[FOR_INC_POSTLOOP:%.*]] ], [ [[I_017_COPY]], [[POSTLOOP]] ]
; CHECK-NEXT:    [[CMP1_POSTLOOP:%.*]] = icmp ult i32 [[I_017_POSTLOOP]], 512
; CHECK-NEXT:    [[ARRAYIDX_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    [[TMP6:%.*]] = load i32, ptr [[ARRAYIDX_POSTLOOP]], align 4
; CHECK-NEXT:    [[ARRAYIDX2_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    [[TMP7:%.*]] = load i32, ptr [[ARRAYIDX2_POSTLOOP]], align 4
; CHECK-NEXT:    br i1 [[CMP1_POSTLOOP]], label [[IF_THEN_POSTLOOP:%.*]], label [[IF_ELSE_POSTLOOP:%.*]]
; CHECK:       if.else.postloop:
; CHECK-NEXT:    [[ADD6_POSTLOOP:%.*]] = add nsw i32 [[TMP7]], [[TMP6]]
; CHECK-NEXT:    [[ARRAYIDX7_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    store i32 [[ADD6_POSTLOOP]], ptr [[ARRAYIDX7_POSTLOOP]], align 4
; CHECK-NEXT:    br label [[FOR_INC_POSTLOOP]]
; CHECK:       if.then.postloop:
; CHECK-NEXT:    [[SUB_POSTLOOP:%.*]] = sub i32 [[TMP6]], [[TMP7]]
; CHECK-NEXT:    [[ARRAYIDX3_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    [[TMP8:%.*]] = load i32, ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    [[ADD_POSTLOOP:%.*]] = add nsw i32 [[SUB_POSTLOOP]], [[TMP8]]
; CHECK-NEXT:    store i32 [[ADD_POSTLOOP]], ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    br label [[FOR_INC_POSTLOOP]]
; CHECK:       for.inc.postloop:
; CHECK-NEXT:    [[INC_POSTLOOP]] = add nuw nsw i32 [[I_017_POSTLOOP]], 1
; CHECK-NEXT:    [[EXITCOND_POSTLOOP:%.*]] = icmp slt i32 [[INC_POSTLOOP]], [[N]]
; CHECK-NEXT:    br i1 [[EXITCOND_POSTLOOP]], label [[FOR_BODY_POSTLOOP]], label [[FOR_COND_CLEANUP_LOOPEXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP7:![0-9]+]], !loop_constrainer.loop.clone [[META5]]
;
entry:
  %cmp16 = icmp sgt i32 %N, 0
  br i1 %cmp16, label %for.body, label %for.cond.cleanup

for.cond.cleanup:
  ret void

for.body:
  %i.017 = phi i32 [ %inc, %for.inc ], [ 0, %entry ]
  %cmp1 = icmp ult i32 %i.017, 512
  %arrayidx = getelementptr inbounds i32, ptr %b, i32 %i.017
  %0 = load i32, ptr %arrayidx, align 4
  %arrayidx2 = getelementptr inbounds i32, ptr %c, i32 %i.017
  %1 = load i32, ptr %arrayidx2, align 4
  br i1 %cmp1, label %if.then, label %if.else

if.then:
  %sub = sub i32 %0, %1
  %arrayidx3 = getelementptr inbounds i32, ptr %a, i32 %i.017
  %2 = load i32, ptr %arrayidx3, align 4
  %add = add nsw i32 %sub, %2
  store i32 %add, ptr %arrayidx3, align 4
  br label %for.inc

if.else:
  %add6 = add nsw i32 %1, %0
  %arrayidx7 = getelementptr inbounds i32, ptr %a, i32 %i.017
  store i32 %add6, ptr %arrayidx7, align 4
  br label %for.inc

for.inc:
  %inc = add nuw nsw i32 %i.017, 1
  %exitcond = icmp slt i32 %inc, %N
  br i1 %exitcond, label %for.body, label %for.cond.cleanup
}

define void @test_inc_ult(ptr nocapture %a, ptr nocapture readonly %b, ptr nocapture readonly %c, i32 %N) {
; CHECK-LABEL: define void @test_inc_ult(
; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr readonly captures(none) [[B:%.*]], ptr readonly captures(none) [[C:%.*]], i32 [[N:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP16:%.*]] = icmp ugt i32 [[N]], 0
; CHECK-NEXT:    br i1 [[CMP16]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK:       for.body.preheader:
; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = call i32 @llvm.umin.i32(i32 [[N]], i32 512)
; CHECK-NEXT:    [[TMP0:%.*]] = icmp ult i32 0, [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP0]], label [[FOR_BODY_PREHEADER1:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
; CHECK:       for.body.preheader1:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.cond.cleanup.loopexit.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]]
; CHECK:       for.cond.cleanup.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       for.body:
; CHECK-NEXT:    [[I_017:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_INC:%.*]] ], [ 0, [[FOR_BODY_PREHEADER1]] ]
; CHECK-NEXT:    [[CMP1:%.*]] = icmp ult i32 [[I_017]], 512
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[I_017]]
; CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[I_017]]
; CHECK-NEXT:    [[TMP2:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-NEXT:    br i1 true, label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
; CHECK:       if.then:
; CHECK-NEXT:    [[SUB:%.*]] = sub i32 [[TMP1]], [[TMP2]]
; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017]]
; CHECK-NEXT:    [[TMP3:%.*]] = load i32, ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[SUB]], [[TMP3]]
; CHECK-NEXT:    store i32 [[ADD]], ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       if.else:
; CHECK-NEXT:    [[ADD6:%.*]] = add nsw i32 [[TMP2]], [[TMP1]]
; CHECK-NEXT:    [[ARRAYIDX7:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017]]
; CHECK-NEXT:    store i32 [[ADD6]], ptr [[ARRAYIDX7]], align 4
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       for.inc:
; CHECK-NEXT:    [[INC]] = add nuw nsw i32 [[I_017]], 1
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp ult i32 [[INC]], [[N]]
; CHECK-NEXT:    [[TMP4:%.*]] = icmp ult i32 [[INC]], [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP4]], label [[FOR_BODY]], label [[MAIN_EXIT_SELECTOR:%.*]]
; CHECK:       main.exit.selector:
; CHECK-NEXT:    [[INC_LCSSA:%.*]] = phi i32 [ [[INC]], [[FOR_INC]] ]
; CHECK-NEXT:    [[TMP5:%.*]] = icmp ult i32 [[INC_LCSSA]], [[N]]
; CHECK-NEXT:    br i1 [[TMP5]], label [[MAIN_PSEUDO_EXIT]], label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK:       main.pseudo.exit:
; CHECK-NEXT:    [[I_017_COPY:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    [[INDVAR_END:%.*]] = phi i32 [ 0, [[FOR_BODY_PREHEADER]] ], [ [[INC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
; CHECK:       postloop:
; CHECK-NEXT:    br label [[FOR_BODY_POSTLOOP:%.*]]
; CHECK:       for.body.postloop:
; CHECK-NEXT:    [[I_017_POSTLOOP:%.*]] = phi i32 [ [[INC_POSTLOOP:%.*]], [[FOR_INC_POSTLOOP:%.*]] ], [ [[I_017_COPY]], [[POSTLOOP]] ]
; CHECK-NEXT:    [[CMP1_POSTLOOP:%.*]] = icmp ult i32 [[I_017_POSTLOOP]], 512
; CHECK-NEXT:    [[ARRAYIDX_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    [[TMP6:%.*]] = load i32, ptr [[ARRAYIDX_POSTLOOP]], align 4
; CHECK-NEXT:    [[ARRAYIDX2_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    [[TMP7:%.*]] = load i32, ptr [[ARRAYIDX2_POSTLOOP]], align 4
; CHECK-NEXT:    br i1 [[CMP1_POSTLOOP]], label [[IF_THEN_POSTLOOP:%.*]], label [[IF_ELSE_POSTLOOP:%.*]]
; CHECK:       if.else.postloop:
; CHECK-NEXT:    [[ADD6_POSTLOOP:%.*]] = add nsw i32 [[TMP7]], [[TMP6]]
; CHECK-NEXT:    [[ARRAYIDX7_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    store i32 [[ADD6_POSTLOOP]], ptr [[ARRAYIDX7_POSTLOOP]], align 4
; CHECK-NEXT:    br label [[FOR_INC_POSTLOOP]]
; CHECK:       if.then.postloop:
; CHECK-NEXT:    [[SUB_POSTLOOP:%.*]] = sub i32 [[TMP6]], [[TMP7]]
; CHECK-NEXT:    [[ARRAYIDX3_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[I_017_POSTLOOP]]
; CHECK-NEXT:    [[TMP8:%.*]] = load i32, ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    [[ADD_POSTLOOP:%.*]] = add nsw i32 [[SUB_POSTLOOP]], [[TMP8]]
; CHECK-NEXT:    store i32 [[ADD_POSTLOOP]], ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    br label [[FOR_INC_POSTLOOP]]
; CHECK:       for.inc.postloop:
; CHECK-NEXT:    [[INC_POSTLOOP]] = add nuw nsw i32 [[I_017_POSTLOOP]], 1
; CHECK-NEXT:    [[EXITCOND_POSTLOOP:%.*]] = icmp ult i32 [[INC_POSTLOOP]], [[N]]
; CHECK-NEXT:    br i1 [[EXITCOND_POSTLOOP]], label [[FOR_BODY_POSTLOOP]], label [[FOR_COND_CLEANUP_LOOPEXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP8:![0-9]+]], !loop_constrainer.loop.clone [[META5]]
;
entry:
  %cmp16 = icmp ugt i32 %N, 0
  br i1 %cmp16, label %for.body, label %for.cond.cleanup

for.cond.cleanup:
  ret void

for.body:
  %i.017 = phi i32 [ %inc, %for.inc ], [ 0, %entry ]
  %cmp1 = icmp ult i32 %i.017, 512
  %arrayidx = getelementptr inbounds i32, ptr %b, i32 %i.017
  %0 = load i32, ptr %arrayidx, align 4
  %arrayidx2 = getelementptr inbounds i32, ptr %c, i32 %i.017
  %1 = load i32, ptr %arrayidx2, align 4
  br i1 %cmp1, label %if.then, label %if.else

if.then:
  %sub = sub i32 %0, %1
  %arrayidx3 = getelementptr inbounds i32, ptr %a, i32 %i.017
  %2 = load i32, ptr %arrayidx3, align 4
  %add = add nsw i32 %sub, %2
  store i32 %add, ptr %arrayidx3, align 4
  br label %for.inc

if.else:
  %add6 = add nsw i32 %1, %0
  %arrayidx7 = getelementptr inbounds i32, ptr %a, i32 %i.017
  store i32 %add6, ptr %arrayidx7, align 4
  br label %for.inc

for.inc:
  %inc = add nuw nsw i32 %i.017, 1
  %exitcond = icmp ult i32 %inc, %N
  br i1 %exitcond, label %for.body, label %for.cond.cleanup
}

define void @signed_var_imm_dec_sgt(ptr nocapture %a, ptr nocapture readonly %b, ptr nocapture readonly %c, i32 %M) {
; CHECK-LABEL: define void @signed_var_imm_dec_sgt(
; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr readonly captures(none) [[B:%.*]], ptr readonly captures(none) [[C:%.*]], i32 [[M:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP14:%.*]] = icmp slt i32 [[M]], 1024
; CHECK-NEXT:    br i1 [[CMP14]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK:       for.body.preheader:
; CHECK-NEXT:    [[TMP0:%.*]] = add i32 [[M]], 1
; CHECK-NEXT:    [[SMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP0]], i32 1024)
; CHECK-NEXT:    [[EXIT_PRELOOP_AT:%.*]] = add nsw i32 [[SMAX]], -1
; CHECK-NEXT:    [[SMAX1:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP0]], i32 0)
; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = add nsw i32 [[SMAX1]], -1
; CHECK-NEXT:    [[TMP1:%.*]] = icmp sgt i32 1024, [[EXIT_PRELOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP1]], label [[FOR_BODY_PRELOOP_PREHEADER:%.*]], label [[PRELOOP_PSEUDO_EXIT:%.*]]
; CHECK:       for.body.preloop.preheader:
; CHECK-NEXT:    br label [[FOR_BODY_PRELOOP:%.*]]
; CHECK:       for.cond.cleanup.loopexit.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]]
; CHECK:       for.cond.cleanup.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       mainloop:
; CHECK-NEXT:    [[TMP2:%.*]] = icmp sgt i32 [[INDVAR_END:%.*]], [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP2]], label [[FOR_BODY_PREHEADER3:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
; CHECK:       for.body.preheader3:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ [[DEC:%.*]], [[FOR_INC:%.*]] ], [ [[IV_PRELOOP_COPY:%.*]], [[FOR_BODY_PREHEADER3]] ]
; CHECK-NEXT:    [[CMP1:%.*]] = icmp slt i32 [[IV]], 1024
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[IV]]
; CHECK-NEXT:    [[TMP3:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[IV]]
; CHECK-NEXT:    [[TMP4:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-NEXT:    [[MUL:%.*]] = mul nsw i32 [[TMP4]], [[TMP3]]
; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[IV]]
; CHECK-NEXT:    br i1 true, label [[FOR_INC]], label [[IF_ELSE:%.*]]
; CHECK:       if.else:
; CHECK-NEXT:    [[TMP5:%.*]] = load i32, ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[TMP5]], [[MUL]]
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       for.inc:
; CHECK-NEXT:    [[STOREMERGE:%.*]] = phi i32 [ [[ADD]], [[IF_ELSE]] ], [ [[MUL]], [[FOR_BODY]] ]
; CHECK-NEXT:    store i32 [[STOREMERGE]], ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[DEC]] = add nsw i32 [[IV]], -1
; CHECK-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[DEC]], [[M]]
; CHECK-NEXT:    [[TMP6:%.*]] = icmp sgt i32 [[DEC]], [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP6]], label [[FOR_BODY]], label [[MAIN_EXIT_SELECTOR:%.*]]
; CHECK:       main.exit.selector:
; CHECK-NEXT:    [[DEC_LCSSA:%.*]] = phi i32 [ [[DEC]], [[FOR_INC]] ]
; CHECK-NEXT:    [[TMP7:%.*]] = icmp sgt i32 [[DEC_LCSSA]], [[M]]
; CHECK-NEXT:    br i1 [[TMP7]], label [[MAIN_PSEUDO_EXIT]], label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK:       main.pseudo.exit:
; CHECK-NEXT:    [[IV_COPY:%.*]] = phi i32 [ [[IV_PRELOOP_COPY]], [[MAINLOOP:%.*]] ], [ [[DEC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    [[INDVAR_END2:%.*]] = phi i32 [ [[INDVAR_END]], [[MAINLOOP]] ], [ [[DEC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
; CHECK:       for.body.preloop:
; CHECK-NEXT:    [[IV_PRELOOP:%.*]] = phi i32 [ [[DEC_PRELOOP:%.*]], [[FOR_INC_PRELOOP:%.*]] ], [ 1024, [[FOR_BODY_PRELOOP_PREHEADER]] ]
; CHECK-NEXT:    [[CMP1_PRELOOP:%.*]] = icmp slt i32 [[IV_PRELOOP]], 1024
; CHECK-NEXT:    [[ARRAYIDX_PRELOOP:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[IV_PRELOOP]]
; CHECK-NEXT:    [[TMP8:%.*]] = load i32, ptr [[ARRAYIDX_PRELOOP]], align 4
; CHECK-NEXT:    [[ARRAYIDX2_PRELOOP:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[IV_PRELOOP]]
; CHECK-NEXT:    [[TMP9:%.*]] = load i32, ptr [[ARRAYIDX2_PRELOOP]], align 4
; CHECK-NEXT:    [[MUL_PRELOOP:%.*]] = mul nsw i32 [[TMP9]], [[TMP8]]
; CHECK-NEXT:    [[ARRAYIDX3_PRELOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[IV_PRELOOP]]
; CHECK-NEXT:    br i1 [[CMP1_PRELOOP]], label [[FOR_INC_PRELOOP]], label [[IF_ELSE_PRELOOP:%.*]]
; CHECK:       if.else.preloop:
; CHECK-NEXT:    [[TMP10:%.*]] = load i32, ptr [[ARRAYIDX3_PRELOOP]], align 4
; CHECK-NEXT:    [[ADD_PRELOOP:%.*]] = add nsw i32 [[TMP10]], [[MUL_PRELOOP]]
; CHECK-NEXT:    br label [[FOR_INC_PRELOOP]]
; CHECK:       for.inc.preloop:
; CHECK-NEXT:    [[STOREMERGE_PRELOOP:%.*]] = phi i32 [ [[ADD_PRELOOP]], [[IF_ELSE_PRELOOP]] ], [ [[MUL_PRELOOP]], [[FOR_BODY_PRELOOP]] ]
; CHECK-NEXT:    store i32 [[STOREMERGE_PRELOOP]], ptr [[ARRAYIDX3_PRELOOP]], align 4
; CHECK-NEXT:    [[DEC_PRELOOP]] = add nsw i32 [[IV_PRELOOP]], -1
; CHECK-NEXT:    [[CMP_PRELOOP:%.*]] = icmp sgt i32 [[DEC_PRELOOP]], [[M]]
; CHECK-NEXT:    [[TMP11:%.*]] = icmp sgt i32 [[DEC_PRELOOP]], [[EXIT_PRELOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP11]], label [[FOR_BODY_PRELOOP]], label [[PRELOOP_EXIT_SELECTOR:%.*]], !llvm.loop [[LOOP9:![0-9]+]], !loop_constrainer.loop.clone [[META5]]
; CHECK:       preloop.exit.selector:
; CHECK-NEXT:    [[DEC_PRELOOP_LCSSA:%.*]] = phi i32 [ [[DEC_PRELOOP]], [[FOR_INC_PRELOOP]] ]
; CHECK-NEXT:    [[TMP12:%.*]] = icmp sgt i32 [[DEC_PRELOOP_LCSSA]], [[M]]
; CHECK-NEXT:    br i1 [[TMP12]], label [[PRELOOP_PSEUDO_EXIT]], label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK:       preloop.pseudo.exit:
; CHECK-NEXT:    [[IV_PRELOOP_COPY]] = phi i32 [ 1024, [[FOR_BODY_PREHEADER]] ], [ [[DEC_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
; CHECK-NEXT:    [[INDVAR_END]] = phi i32 [ 1024, [[FOR_BODY_PREHEADER]] ], [ [[DEC_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
; CHECK-NEXT:    br label [[MAINLOOP]]
; CHECK:       postloop:
; CHECK-NEXT:    br label [[FOR_BODY_POSTLOOP:%.*]]
; CHECK:       for.body.postloop:
; CHECK-NEXT:    [[IV_POSTLOOP:%.*]] = phi i32 [ [[DEC_POSTLOOP:%.*]], [[FOR_INC_POSTLOOP:%.*]] ], [ [[IV_COPY]], [[POSTLOOP]] ]
; CHECK-NEXT:    [[CMP1_POSTLOOP:%.*]] = icmp slt i32 [[IV_POSTLOOP]], 1024
; CHECK-NEXT:    [[ARRAYIDX_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[IV_POSTLOOP]]
; CHECK-NEXT:    [[TMP13:%.*]] = load i32, ptr [[ARRAYIDX_POSTLOOP]], align 4
; CHECK-NEXT:    [[ARRAYIDX2_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[IV_POSTLOOP]]
; CHECK-NEXT:    [[TMP14:%.*]] = load i32, ptr [[ARRAYIDX2_POSTLOOP]], align 4
; CHECK-NEXT:    [[MUL_POSTLOOP:%.*]] = mul nsw i32 [[TMP14]], [[TMP13]]
; CHECK-NEXT:    [[ARRAYIDX3_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[IV_POSTLOOP]]
; CHECK-NEXT:    br i1 [[CMP1_POSTLOOP]], label [[FOR_INC_POSTLOOP]], label [[IF_ELSE_POSTLOOP:%.*]]
; CHECK:       if.else.postloop:
; CHECK-NEXT:    [[TMP15:%.*]] = load i32, ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    [[ADD_POSTLOOP:%.*]] = add nsw i32 [[TMP15]], [[MUL_POSTLOOP]]
; CHECK-NEXT:    br label [[FOR_INC_POSTLOOP]]
; CHECK:       for.inc.postloop:
; CHECK-NEXT:    [[STOREMERGE_POSTLOOP:%.*]] = phi i32 [ [[ADD_POSTLOOP]], [[IF_ELSE_POSTLOOP]] ], [ [[MUL_POSTLOOP]], [[FOR_BODY_POSTLOOP]] ]
; CHECK-NEXT:    store i32 [[STOREMERGE_POSTLOOP]], ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    [[DEC_POSTLOOP]] = add nsw i32 [[IV_POSTLOOP]], -1
; CHECK-NEXT:    [[CMP_POSTLOOP:%.*]] = icmp sgt i32 [[DEC_POSTLOOP]], [[M]]
; CHECK-NEXT:    br i1 [[CMP_POSTLOOP]], label [[FOR_BODY_POSTLOOP]], label [[FOR_COND_CLEANUP_LOOPEXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP10:![0-9]+]], !loop_constrainer.loop.clone [[META5]]
;
entry:
  %cmp14 = icmp slt i32 %M, 1024
  br i1 %cmp14, label %for.body, label %for.cond.cleanup

for.cond.cleanup:                                 ; preds = %for.inc, %entry
  ret void

for.body:                                         ; preds = %entry, %for.inc
  %iv = phi i32 [ %dec, %for.inc ], [ 1024, %entry ]
  %cmp1 = icmp slt i32 %iv, 1024
  %arrayidx = getelementptr inbounds i32, ptr %b, i32 %iv
  %0 = load i32, ptr %arrayidx, align 4
  %arrayidx2 = getelementptr inbounds i32, ptr %c, i32 %iv
  %1 = load i32, ptr %arrayidx2, align 4
  %mul = mul nsw i32 %1, %0
  %arrayidx3 = getelementptr inbounds i32, ptr %a, i32 %iv
  br i1 %cmp1, label %for.inc, label %if.else

if.else:                                          ; preds = %for.body
  %2 = load i32, ptr %arrayidx3, align 4
  %add = add nsw i32 %2, %mul
  br label %for.inc

for.inc:                                          ; preds = %for.body, %if.else
  %storemerge = phi i32 [ %add, %if.else ], [ %mul, %for.body ]
  store i32 %storemerge, ptr %arrayidx3, align 4
  %dec = add nsw i32 %iv, -1
  %cmp = icmp sgt i32 %dec, %M
  br i1 %cmp, label %for.body, label %for.cond.cleanup
}

define void @signed_var_imm_dec_sge(ptr nocapture %a, ptr nocapture readonly %b, ptr nocapture readonly %c, i32 %M) {
; CHECK-LABEL: define void @signed_var_imm_dec_sge(
; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr readonly captures(none) [[B:%.*]], ptr readonly captures(none) [[C:%.*]], i32 [[M:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP14:%.*]] = icmp sgt i32 [[M]], 1024
; CHECK-NEXT:    br i1 [[CMP14]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY_PREHEADER:%.*]]
; CHECK:       for.body.preheader:
; CHECK-NEXT:    [[TMP0:%.*]] = add i32 [[M]], 1
; CHECK-NEXT:    [[SMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP0]], i32 1025)
; CHECK-NEXT:    [[EXIT_PRELOOP_AT:%.*]] = add nsw i32 [[SMAX]], -1
; CHECK-NEXT:    [[SMAX1:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP0]], i32 1)
; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = add nsw i32 [[SMAX1]], -1
; CHECK-NEXT:    [[TMP1:%.*]] = icmp sgt i32 1025, [[EXIT_PRELOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP1]], label [[FOR_BODY_PRELOOP_PREHEADER:%.*]], label [[PRELOOP_PSEUDO_EXIT:%.*]]
; CHECK:       for.body.preloop.preheader:
; CHECK-NEXT:    br label [[FOR_BODY_PRELOOP:%.*]]
; CHECK:       for.cond.cleanup.loopexit.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]]
; CHECK:       for.cond.cleanup.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       mainloop:
; CHECK-NEXT:    [[TMP2:%.*]] = icmp sgt i32 [[INDVAR_END:%.*]], [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP2]], label [[FOR_BODY_PREHEADER3:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
; CHECK:       for.body.preheader3:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ [[DEC:%.*]], [[FOR_INC:%.*]] ], [ [[IV_PRELOOP_COPY:%.*]], [[FOR_BODY_PREHEADER3]] ]
; CHECK-NEXT:    [[CMP1:%.*]] = icmp slt i32 [[IV]], 1024
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[IV]]
; CHECK-NEXT:    [[TMP3:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[IV]]
; CHECK-NEXT:    [[TMP4:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-NEXT:    [[MUL:%.*]] = mul nsw i32 [[TMP4]], [[TMP3]]
; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[IV]]
; CHECK-NEXT:    br i1 true, label [[FOR_INC]], label [[IF_ELSE:%.*]]
; CHECK:       if.else:
; CHECK-NEXT:    [[TMP5:%.*]] = load i32, ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[TMP5]], [[MUL]]
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       for.inc:
; CHECK-NEXT:    [[STOREMERGE:%.*]] = phi i32 [ [[ADD]], [[IF_ELSE]] ], [ [[MUL]], [[FOR_BODY]] ]
; CHECK-NEXT:    store i32 [[STOREMERGE]], ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[DEC]] = add nsw i32 [[IV]], -1
; CHECK-NEXT:    [[CMP:%.*]] = icmp sgt i32 [[IV]], [[M]]
; CHECK-NEXT:    [[TMP6:%.*]] = icmp sgt i32 [[IV]], [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP6]], label [[FOR_BODY]], label [[MAIN_EXIT_SELECTOR:%.*]]
; CHECK:       main.exit.selector:
; CHECK-NEXT:    [[DEC_LCSSA:%.*]] = phi i32 [ [[DEC]], [[FOR_INC]] ]
; CHECK-NEXT:    [[IV_LCSSA:%.*]] = phi i32 [ [[IV]], [[FOR_INC]] ]
; CHECK-NEXT:    [[TMP7:%.*]] = icmp sgt i32 [[IV_LCSSA]], [[M]]
; CHECK-NEXT:    br i1 [[TMP7]], label [[MAIN_PSEUDO_EXIT]], label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK:       main.pseudo.exit:
; CHECK-NEXT:    [[IV_COPY:%.*]] = phi i32 [ [[IV_PRELOOP_COPY]], [[MAINLOOP:%.*]] ], [ [[DEC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    [[INDVAR_END2:%.*]] = phi i32 [ [[INDVAR_END]], [[MAINLOOP]] ], [ [[IV_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
; CHECK:       for.body.preloop:
; CHECK-NEXT:    [[IV_PRELOOP:%.*]] = phi i32 [ [[DEC_PRELOOP:%.*]], [[FOR_INC_PRELOOP:%.*]] ], [ 1024, [[FOR_BODY_PRELOOP_PREHEADER]] ]
; CHECK-NEXT:    [[CMP1_PRELOOP:%.*]] = icmp slt i32 [[IV_PRELOOP]], 1024
; CHECK-NEXT:    [[ARRAYIDX_PRELOOP:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[IV_PRELOOP]]
; CHECK-NEXT:    [[TMP8:%.*]] = load i32, ptr [[ARRAYIDX_PRELOOP]], align 4
; CHECK-NEXT:    [[ARRAYIDX2_PRELOOP:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[IV_PRELOOP]]
; CHECK-NEXT:    [[TMP9:%.*]] = load i32, ptr [[ARRAYIDX2_PRELOOP]], align 4
; CHECK-NEXT:    [[MUL_PRELOOP:%.*]] = mul nsw i32 [[TMP9]], [[TMP8]]
; CHECK-NEXT:    [[ARRAYIDX3_PRELOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[IV_PRELOOP]]
; CHECK-NEXT:    br i1 [[CMP1_PRELOOP]], label [[FOR_INC_PRELOOP]], label [[IF_ELSE_PRELOOP:%.*]]
; CHECK:       if.else.preloop:
; CHECK-NEXT:    [[TMP10:%.*]] = load i32, ptr [[ARRAYIDX3_PRELOOP]], align 4
; CHECK-NEXT:    [[ADD_PRELOOP:%.*]] = add nsw i32 [[TMP10]], [[MUL_PRELOOP]]
; CHECK-NEXT:    br label [[FOR_INC_PRELOOP]]
; CHECK:       for.inc.preloop:
; CHECK-NEXT:    [[STOREMERGE_PRELOOP:%.*]] = phi i32 [ [[ADD_PRELOOP]], [[IF_ELSE_PRELOOP]] ], [ [[MUL_PRELOOP]], [[FOR_BODY_PRELOOP]] ]
; CHECK-NEXT:    store i32 [[STOREMERGE_PRELOOP]], ptr [[ARRAYIDX3_PRELOOP]], align 4
; CHECK-NEXT:    [[DEC_PRELOOP]] = add nsw i32 [[IV_PRELOOP]], -1
; CHECK-NEXT:    [[CMP_PRELOOP:%.*]] = icmp sgt i32 [[IV_PRELOOP]], [[M]]
; CHECK-NEXT:    [[TMP11:%.*]] = icmp sgt i32 [[IV_PRELOOP]], [[EXIT_PRELOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP11]], label [[FOR_BODY_PRELOOP]], label [[PRELOOP_EXIT_SELECTOR:%.*]], !llvm.loop [[LOOP11:![0-9]+]], !loop_constrainer.loop.clone [[META5]]
; CHECK:       preloop.exit.selector:
; CHECK-NEXT:    [[DEC_PRELOOP_LCSSA:%.*]] = phi i32 [ [[DEC_PRELOOP]], [[FOR_INC_PRELOOP]] ]
; CHECK-NEXT:    [[IV_PRELOOP_LCSSA:%.*]] = phi i32 [ [[IV_PRELOOP]], [[FOR_INC_PRELOOP]] ]
; CHECK-NEXT:    [[TMP12:%.*]] = icmp sgt i32 [[IV_PRELOOP_LCSSA]], [[M]]
; CHECK-NEXT:    br i1 [[TMP12]], label [[PRELOOP_PSEUDO_EXIT]], label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK:       preloop.pseudo.exit:
; CHECK-NEXT:    [[IV_PRELOOP_COPY]] = phi i32 [ 1024, [[FOR_BODY_PREHEADER]] ], [ [[DEC_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
; CHECK-NEXT:    [[INDVAR_END]] = phi i32 [ 1025, [[FOR_BODY_PREHEADER]] ], [ [[IV_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
; CHECK-NEXT:    br label [[MAINLOOP]]
; CHECK:       postloop:
; CHECK-NEXT:    br label [[FOR_BODY_POSTLOOP:%.*]]
; CHECK:       for.body.postloop:
; CHECK-NEXT:    [[IV_POSTLOOP:%.*]] = phi i32 [ [[DEC_POSTLOOP:%.*]], [[FOR_INC_POSTLOOP:%.*]] ], [ [[IV_COPY]], [[POSTLOOP]] ]
; CHECK-NEXT:    [[CMP1_POSTLOOP:%.*]] = icmp slt i32 [[IV_POSTLOOP]], 1024
; CHECK-NEXT:    [[ARRAYIDX_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[IV_POSTLOOP]]
; CHECK-NEXT:    [[TMP13:%.*]] = load i32, ptr [[ARRAYIDX_POSTLOOP]], align 4
; CHECK-NEXT:    [[ARRAYIDX2_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[IV_POSTLOOP]]
; CHECK-NEXT:    [[TMP14:%.*]] = load i32, ptr [[ARRAYIDX2_POSTLOOP]], align 4
; CHECK-NEXT:    [[MUL_POSTLOOP:%.*]] = mul nsw i32 [[TMP14]], [[TMP13]]
; CHECK-NEXT:    [[ARRAYIDX3_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[IV_POSTLOOP]]
; CHECK-NEXT:    br i1 [[CMP1_POSTLOOP]], label [[FOR_INC_POSTLOOP]], label [[IF_ELSE_POSTLOOP:%.*]]
; CHECK:       if.else.postloop:
; CHECK-NEXT:    [[TMP15:%.*]] = load i32, ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    [[ADD_POSTLOOP:%.*]] = add nsw i32 [[TMP15]], [[MUL_POSTLOOP]]
; CHECK-NEXT:    br label [[FOR_INC_POSTLOOP]]
; CHECK:       for.inc.postloop:
; CHECK-NEXT:    [[STOREMERGE_POSTLOOP:%.*]] = phi i32 [ [[ADD_POSTLOOP]], [[IF_ELSE_POSTLOOP]] ], [ [[MUL_POSTLOOP]], [[FOR_BODY_POSTLOOP]] ]
; CHECK-NEXT:    store i32 [[STOREMERGE_POSTLOOP]], ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    [[DEC_POSTLOOP]] = add nsw i32 [[IV_POSTLOOP]], -1
; CHECK-NEXT:    [[CMP_POSTLOOP:%.*]] = icmp sgt i32 [[IV_POSTLOOP]], [[M]]
; CHECK-NEXT:    br i1 [[CMP_POSTLOOP]], label [[FOR_BODY_POSTLOOP]], label [[FOR_COND_CLEANUP_LOOPEXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP12:![0-9]+]], !loop_constrainer.loop.clone [[META5]]
;
entry:
  %cmp14 = icmp sgt i32 %M, 1024
  br i1 %cmp14, label %for.cond.cleanup, label %for.body

for.cond.cleanup:                                 ; preds = %for.inc, %entry
  ret void

for.body:                                         ; preds = %entry, %for.inc
  %iv = phi i32 [ %dec, %for.inc ], [ 1024, %entry ]
  %cmp1 = icmp slt i32 %iv, 1024
  %arrayidx = getelementptr inbounds i32, ptr %b, i32 %iv
  %0 = load i32, ptr %arrayidx, align 4
  %arrayidx2 = getelementptr inbounds i32, ptr %c, i32 %iv
  %1 = load i32, ptr %arrayidx2, align 4
  %mul = mul nsw i32 %1, %0
  %arrayidx3 = getelementptr inbounds i32, ptr %a, i32 %iv
  br i1 %cmp1, label %for.inc, label %if.else

if.else:                                          ; preds = %for.body
  %2 = load i32, ptr %arrayidx3, align 4
  %add = add nsw i32 %2, %mul
  br label %for.inc

for.inc:                                          ; preds = %for.body, %if.else
  %storemerge = phi i32 [ %add, %if.else ], [ %mul, %for.body ]
  store i32 %storemerge, ptr %arrayidx3, align 4
  %dec = add nsw i32 %iv, -1
  %cmp = icmp sgt i32 %iv, %M
  br i1 %cmp, label %for.body, label %for.cond.cleanup
}

define void @signed_var_imm_dec_slt(ptr nocapture %a, ptr nocapture readonly %b, ptr nocapture readonly %c, i32 %M) {
; CHECK-LABEL: define void @signed_var_imm_dec_slt(
; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr readonly captures(none) [[B:%.*]], ptr readonly captures(none) [[C:%.*]], i32 [[M:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP14:%.*]] = icmp sgt i32 [[M]], 1024
; CHECK-NEXT:    br i1 [[CMP14]], label [[FOR_COND_CLEANUP:%.*]], label [[FOR_BODY_PREHEADER:%.*]]
; CHECK:       for.body.preheader:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.cond.cleanup.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       for.body:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ [[DEC:%.*]], [[FOR_INC:%.*]] ], [ 1024, [[FOR_BODY_PREHEADER]] ]
; CHECK-NEXT:    [[CMP1:%.*]] = icmp slt i32 [[IV]], 1024
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[IV]]
; CHECK-NEXT:    [[TMP0:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[IV]]
; CHECK-NEXT:    [[TMP1:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-NEXT:    [[MUL:%.*]] = mul nsw i32 [[TMP1]], [[TMP0]]
; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[IV]]
; CHECK-NEXT:    br i1 [[CMP1]], label [[FOR_INC]], label [[IF_ELSE:%.*]]
; CHECK:       if.else:
; CHECK-NEXT:    [[TMP2:%.*]] = load i32, ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[TMP2]], [[MUL]]
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       for.inc:
; CHECK-NEXT:    [[STOREMERGE:%.*]] = phi i32 [ [[ADD]], [[IF_ELSE]] ], [ [[MUL]], [[FOR_BODY]] ]
; CHECK-NEXT:    store i32 [[STOREMERGE]], ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[DEC]] = add nsw i32 [[IV]], -1
; CHECK-NEXT:    [[CMP:%.*]] = icmp slt i32 [[IV]], [[M]]
; CHECK-NEXT:    br i1 [[CMP]], label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]], label [[FOR_BODY]]
;
entry:
  %cmp14 = icmp sgt i32 %M, 1024
  br i1 %cmp14, label %for.cond.cleanup, label %for.body

for.cond.cleanup:                                 ; preds = %for.inc, %entry
  ret void

for.body:                                         ; preds = %entry, %for.inc
  %iv = phi i32 [ %dec, %for.inc ], [ 1024, %entry ]
  %cmp1 = icmp slt i32 %iv, 1024
  %arrayidx = getelementptr inbounds i32, ptr %b, i32 %iv
  %0 = load i32, ptr %arrayidx, align 4
  %arrayidx2 = getelementptr inbounds i32, ptr %c, i32 %iv
  %1 = load i32, ptr %arrayidx2, align 4
  %mul = mul nsw i32 %1, %0
  %arrayidx3 = getelementptr inbounds i32, ptr %a, i32 %iv
  br i1 %cmp1, label %for.inc, label %if.else

if.else:                                          ; preds = %for.body
  %2 = load i32, ptr %arrayidx3, align 4
  %add = add nsw i32 %2, %mul
  br label %for.inc

for.inc:                                          ; preds = %for.body, %if.else
  %storemerge = phi i32 [ %add, %if.else ], [ %mul, %for.body ]
  store i32 %storemerge, ptr %arrayidx3, align 4
  %dec = add nsw i32 %iv, -1
  %cmp = icmp slt i32 %iv, %M
  br i1 %cmp, label %for.cond.cleanup, label %for.body
}

define void @signed_var_imm_dec_ne(ptr nocapture %a, ptr nocapture readonly %b, ptr nocapture readonly %c, i32 %M) {
; CHECK-LABEL: define void @signed_var_imm_dec_ne(
; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr readonly captures(none) [[B:%.*]], ptr readonly captures(none) [[C:%.*]], i32 [[M:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP14:%.*]] = icmp slt i32 [[M]], 1024
; CHECK-NEXT:    br i1 [[CMP14]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK:       for.body.preheader:
; CHECK-NEXT:    [[TMP0:%.*]] = add i32 [[M]], 1
; CHECK-NEXT:    [[SMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP0]], i32 1024)
; CHECK-NEXT:    [[EXIT_PRELOOP_AT:%.*]] = add nsw i32 [[SMAX]], -1
; CHECK-NEXT:    [[SMAX1:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP0]], i32 0)
; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = add nsw i32 [[SMAX1]], -1
; CHECK-NEXT:    [[TMP1:%.*]] = icmp sgt i32 1024, [[EXIT_PRELOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP1]], label [[FOR_BODY_PRELOOP_PREHEADER:%.*]], label [[PRELOOP_PSEUDO_EXIT:%.*]]
; CHECK:       for.body.preloop.preheader:
; CHECK-NEXT:    br label [[FOR_BODY_PRELOOP:%.*]]
; CHECK:       for.cond.cleanup.loopexit.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]]
; CHECK:       for.cond.cleanup.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       mainloop:
; CHECK-NEXT:    [[TMP2:%.*]] = icmp sgt i32 [[INDVAR_END:%.*]], [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP2]], label [[FOR_BODY_PREHEADER3:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
; CHECK:       for.body.preheader3:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ [[DEC:%.*]], [[FOR_INC:%.*]] ], [ [[IV_PRELOOP_COPY:%.*]], [[FOR_BODY_PREHEADER3]] ]
; CHECK-NEXT:    [[CMP1:%.*]] = icmp slt i32 [[IV]], 1024
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[IV]]
; CHECK-NEXT:    [[TMP3:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[IV]]
; CHECK-NEXT:    [[TMP4:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-NEXT:    [[MUL:%.*]] = mul nsw i32 [[TMP4]], [[TMP3]]
; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[IV]]
; CHECK-NEXT:    br i1 true, label [[FOR_INC]], label [[IF_ELSE:%.*]]
; CHECK:       if.else:
; CHECK-NEXT:    [[TMP5:%.*]] = load i32, ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[TMP5]], [[MUL]]
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       for.inc:
; CHECK-NEXT:    [[STOREMERGE:%.*]] = phi i32 [ [[ADD]], [[IF_ELSE]] ], [ [[MUL]], [[FOR_BODY]] ]
; CHECK-NEXT:    store i32 [[STOREMERGE]], ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[DEC]] = add nsw i32 [[IV]], -1
; CHECK-NEXT:    [[CMP:%.*]] = icmp ne i32 [[DEC]], [[M]]
; CHECK-NEXT:    [[TMP6:%.*]] = icmp sgt i32 [[DEC]], [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP6]], label [[FOR_BODY]], label [[MAIN_EXIT_SELECTOR:%.*]]
; CHECK:       main.exit.selector:
; CHECK-NEXT:    [[DEC_LCSSA:%.*]] = phi i32 [ [[DEC]], [[FOR_INC]] ]
; CHECK-NEXT:    [[TMP7:%.*]] = icmp sgt i32 [[DEC_LCSSA]], [[M]]
; CHECK-NEXT:    br i1 [[TMP7]], label [[MAIN_PSEUDO_EXIT]], label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK:       main.pseudo.exit:
; CHECK-NEXT:    [[IV_COPY:%.*]] = phi i32 [ [[IV_PRELOOP_COPY]], [[MAINLOOP:%.*]] ], [ [[DEC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    [[INDVAR_END2:%.*]] = phi i32 [ [[INDVAR_END]], [[MAINLOOP]] ], [ [[DEC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
; CHECK:       for.body.preloop:
; CHECK-NEXT:    [[IV_PRELOOP:%.*]] = phi i32 [ [[DEC_PRELOOP:%.*]], [[FOR_INC_PRELOOP:%.*]] ], [ 1024, [[FOR_BODY_PRELOOP_PREHEADER]] ]
; CHECK-NEXT:    [[CMP1_PRELOOP:%.*]] = icmp slt i32 [[IV_PRELOOP]], 1024
; CHECK-NEXT:    [[ARRAYIDX_PRELOOP:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[IV_PRELOOP]]
; CHECK-NEXT:    [[TMP8:%.*]] = load i32, ptr [[ARRAYIDX_PRELOOP]], align 4
; CHECK-NEXT:    [[ARRAYIDX2_PRELOOP:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[IV_PRELOOP]]
; CHECK-NEXT:    [[TMP9:%.*]] = load i32, ptr [[ARRAYIDX2_PRELOOP]], align 4
; CHECK-NEXT:    [[MUL_PRELOOP:%.*]] = mul nsw i32 [[TMP9]], [[TMP8]]
; CHECK-NEXT:    [[ARRAYIDX3_PRELOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[IV_PRELOOP]]
; CHECK-NEXT:    br i1 [[CMP1_PRELOOP]], label [[FOR_INC_PRELOOP]], label [[IF_ELSE_PRELOOP:%.*]]
; CHECK:       if.else.preloop:
; CHECK-NEXT:    [[TMP10:%.*]] = load i32, ptr [[ARRAYIDX3_PRELOOP]], align 4
; CHECK-NEXT:    [[ADD_PRELOOP:%.*]] = add nsw i32 [[TMP10]], [[MUL_PRELOOP]]
; CHECK-NEXT:    br label [[FOR_INC_PRELOOP]]
; CHECK:       for.inc.preloop:
; CHECK-NEXT:    [[STOREMERGE_PRELOOP:%.*]] = phi i32 [ [[ADD_PRELOOP]], [[IF_ELSE_PRELOOP]] ], [ [[MUL_PRELOOP]], [[FOR_BODY_PRELOOP]] ]
; CHECK-NEXT:    store i32 [[STOREMERGE_PRELOOP]], ptr [[ARRAYIDX3_PRELOOP]], align 4
; CHECK-NEXT:    [[DEC_PRELOOP]] = add nsw i32 [[IV_PRELOOP]], -1
; CHECK-NEXT:    [[CMP_PRELOOP:%.*]] = icmp ne i32 [[DEC_PRELOOP]], [[M]]
; CHECK-NEXT:    [[TMP11:%.*]] = icmp sgt i32 [[DEC_PRELOOP]], [[EXIT_PRELOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP11]], label [[FOR_BODY_PRELOOP]], label [[PRELOOP_EXIT_SELECTOR:%.*]], !llvm.loop [[LOOP13:![0-9]+]], !loop_constrainer.loop.clone [[META5]]
; CHECK:       preloop.exit.selector:
; CHECK-NEXT:    [[DEC_PRELOOP_LCSSA:%.*]] = phi i32 [ [[DEC_PRELOOP]], [[FOR_INC_PRELOOP]] ]
; CHECK-NEXT:    [[TMP12:%.*]] = icmp sgt i32 [[DEC_PRELOOP_LCSSA]], [[M]]
; CHECK-NEXT:    br i1 [[TMP12]], label [[PRELOOP_PSEUDO_EXIT]], label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK:       preloop.pseudo.exit:
; CHECK-NEXT:    [[IV_PRELOOP_COPY]] = phi i32 [ 1024, [[FOR_BODY_PREHEADER]] ], [ [[DEC_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
; CHECK-NEXT:    [[INDVAR_END]] = phi i32 [ 1024, [[FOR_BODY_PREHEADER]] ], [ [[DEC_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
; CHECK-NEXT:    br label [[MAINLOOP]]
; CHECK:       postloop:
; CHECK-NEXT:    br label [[FOR_BODY_POSTLOOP:%.*]]
; CHECK:       for.body.postloop:
; CHECK-NEXT:    [[IV_POSTLOOP:%.*]] = phi i32 [ [[DEC_POSTLOOP:%.*]], [[FOR_INC_POSTLOOP:%.*]] ], [ [[IV_COPY]], [[POSTLOOP]] ]
; CHECK-NEXT:    [[CMP1_POSTLOOP:%.*]] = icmp slt i32 [[IV_POSTLOOP]], 1024
; CHECK-NEXT:    [[ARRAYIDX_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[IV_POSTLOOP]]
; CHECK-NEXT:    [[TMP13:%.*]] = load i32, ptr [[ARRAYIDX_POSTLOOP]], align 4
; CHECK-NEXT:    [[ARRAYIDX2_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[IV_POSTLOOP]]
; CHECK-NEXT:    [[TMP14:%.*]] = load i32, ptr [[ARRAYIDX2_POSTLOOP]], align 4
; CHECK-NEXT:    [[MUL_POSTLOOP:%.*]] = mul nsw i32 [[TMP14]], [[TMP13]]
; CHECK-NEXT:    [[ARRAYIDX3_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[IV_POSTLOOP]]
; CHECK-NEXT:    br i1 [[CMP1_POSTLOOP]], label [[FOR_INC_POSTLOOP]], label [[IF_ELSE_POSTLOOP:%.*]]
; CHECK:       if.else.postloop:
; CHECK-NEXT:    [[TMP15:%.*]] = load i32, ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    [[ADD_POSTLOOP:%.*]] = add nsw i32 [[TMP15]], [[MUL_POSTLOOP]]
; CHECK-NEXT:    br label [[FOR_INC_POSTLOOP]]
; CHECK:       for.inc.postloop:
; CHECK-NEXT:    [[STOREMERGE_POSTLOOP:%.*]] = phi i32 [ [[ADD_POSTLOOP]], [[IF_ELSE_POSTLOOP]] ], [ [[MUL_POSTLOOP]], [[FOR_BODY_POSTLOOP]] ]
; CHECK-NEXT:    store i32 [[STOREMERGE_POSTLOOP]], ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    [[DEC_POSTLOOP]] = add nsw i32 [[IV_POSTLOOP]], -1
; CHECK-NEXT:    [[CMP_POSTLOOP:%.*]] = icmp ne i32 [[DEC_POSTLOOP]], [[M]]
; CHECK-NEXT:    br i1 [[CMP_POSTLOOP]], label [[FOR_BODY_POSTLOOP]], label [[FOR_COND_CLEANUP_LOOPEXIT_LOOPEXIT:%.*]], !llvm.loop [[LOOP14:![0-9]+]], !loop_constrainer.loop.clone [[META5]]
;
entry:
  %cmp14 = icmp slt i32 %M, 1024
  br i1 %cmp14, label %for.body, label %for.cond.cleanup

for.cond.cleanup:                                 ; preds = %for.inc, %entry
  ret void

for.body:                                         ; preds = %entry, %for.inc
  %iv = phi i32 [ %dec, %for.inc ], [ 1024, %entry ]
  %cmp1 = icmp slt i32 %iv, 1024
  %arrayidx = getelementptr inbounds i32, ptr %b, i32 %iv
  %0 = load i32, ptr %arrayidx, align 4
  %arrayidx2 = getelementptr inbounds i32, ptr %c, i32 %iv
  %1 = load i32, ptr %arrayidx2, align 4
  %mul = mul nsw i32 %1, %0
  %arrayidx3 = getelementptr inbounds i32, ptr %a, i32 %iv
  br i1 %cmp1, label %for.inc, label %if.else

if.else:                                          ; preds = %for.body
  %2 = load i32, ptr %arrayidx3, align 4
  %add = add nsw i32 %2, %mul
  br label %for.inc

for.inc:                                          ; preds = %for.body, %if.else
  %storemerge = phi i32 [ %add, %if.else ], [ %mul, %for.body ]
  store i32 %storemerge, ptr %arrayidx3, align 4
  %dec = add nsw i32 %iv, -1
  %cmp = icmp ne i32 %dec, %M
  br i1 %cmp, label %for.body, label %for.cond.cleanup
}

define void @signed_var_imm_dec_eq(ptr nocapture %a, ptr nocapture readonly %b, ptr nocapture readonly %c, i32 %M) {
; CHECK-LABEL: define void @signed_var_imm_dec_eq(
; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr readonly captures(none) [[B:%.*]], ptr readonly captures(none) [[C:%.*]], i32 [[M:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP14:%.*]] = icmp slt i32 [[M]], 1024
; CHECK-NEXT:    br i1 [[CMP14]], label [[FOR_BODY_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK:       for.body.preheader:
; CHECK-NEXT:    [[TMP0:%.*]] = add i32 [[M]], 1
; CHECK-NEXT:    [[SMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP0]], i32 1024)
; CHECK-NEXT:    [[EXIT_PRELOOP_AT:%.*]] = add nsw i32 [[SMAX]], -1
; CHECK-NEXT:    [[SMAX1:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP0]], i32 0)
; CHECK-NEXT:    [[EXIT_MAINLOOP_AT:%.*]] = add nsw i32 [[SMAX1]], -1
; CHECK-NEXT:    [[TMP1:%.*]] = icmp sgt i32 1024, [[EXIT_PRELOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP1]], label [[FOR_BODY_PRELOOP_PREHEADER:%.*]], label [[PRELOOP_PSEUDO_EXIT:%.*]]
; CHECK:       for.body.preloop.preheader:
; CHECK-NEXT:    br label [[FOR_BODY_PRELOOP:%.*]]
; CHECK:       for.cond.cleanup.loopexit.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP_LOOPEXIT:%.*]]
; CHECK:       for.cond.cleanup.loopexit:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret void
; CHECK:       mainloop:
; CHECK-NEXT:    [[TMP2:%.*]] = icmp sgt i32 [[INDVAR_END:%.*]], [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    br i1 [[TMP2]], label [[FOR_BODY_PREHEADER3:%.*]], label [[MAIN_PSEUDO_EXIT:%.*]]
; CHECK:       for.body.preheader3:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ [[DEC:%.*]], [[FOR_INC:%.*]] ], [ [[IV_PRELOOP_COPY:%.*]], [[FOR_BODY_PREHEADER3]] ]
; CHECK-NEXT:    [[CMP1:%.*]] = icmp slt i32 [[IV]], 1024
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[IV]]
; CHECK-NEXT:    [[TMP3:%.*]] = load i32, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[ARRAYIDX2:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[IV]]
; CHECK-NEXT:    [[TMP4:%.*]] = load i32, ptr [[ARRAYIDX2]], align 4
; CHECK-NEXT:    [[MUL:%.*]] = mul nsw i32 [[TMP4]], [[TMP3]]
; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[IV]]
; CHECK-NEXT:    br i1 true, label [[FOR_INC]], label [[IF_ELSE:%.*]]
; CHECK:       if.else:
; CHECK-NEXT:    [[TMP5:%.*]] = load i32, ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[ADD:%.*]] = add nsw i32 [[TMP5]], [[MUL]]
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       for.inc:
; CHECK-NEXT:    [[STOREMERGE:%.*]] = phi i32 [ [[ADD]], [[IF_ELSE]] ], [ [[MUL]], [[FOR_BODY]] ]
; CHECK-NEXT:    store i32 [[STOREMERGE]], ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[DEC]] = add nsw i32 [[IV]], -1
; CHECK-NEXT:    [[CMP:%.*]] = icmp eq i32 [[DEC]], [[M]]
; CHECK-NEXT:    [[TMP6:%.*]] = icmp sgt i32 [[DEC]], [[EXIT_MAINLOOP_AT]]
; CHECK-NEXT:    [[TMP7:%.*]] = xor i1 [[TMP6]], true
; CHECK-NEXT:    br i1 [[TMP7]], label [[MAIN_EXIT_SELECTOR:%.*]], label [[FOR_BODY]]
; CHECK:       main.exit.selector:
; CHECK-NEXT:    [[DEC_LCSSA:%.*]] = phi i32 [ [[DEC]], [[FOR_INC]] ]
; CHECK-NEXT:    [[TMP8:%.*]] = icmp sgt i32 [[DEC_LCSSA]], [[M]]
; CHECK-NEXT:    br i1 [[TMP8]], label [[MAIN_PSEUDO_EXIT]], label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK:       main.pseudo.exit:
; CHECK-NEXT:    [[IV_COPY:%.*]] = phi i32 [ [[IV_PRELOOP_COPY]], [[MAINLOOP:%.*]] ], [ [[DEC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    [[INDVAR_END2:%.*]] = phi i32 [ [[INDVAR_END]], [[MAINLOOP]] ], [ [[DEC_LCSSA]], [[MAIN_EXIT_SELECTOR]] ]
; CHECK-NEXT:    br label [[POSTLOOP:%.*]]
; CHECK:       for.body.preloop:
; CHECK-NEXT:    [[IV_PRELOOP:%.*]] = phi i32 [ [[DEC_PRELOOP:%.*]], [[FOR_INC_PRELOOP:%.*]] ], [ 1024, [[FOR_BODY_PRELOOP_PREHEADER]] ]
; CHECK-NEXT:    [[CMP1_PRELOOP:%.*]] = icmp slt i32 [[IV_PRELOOP]], 1024
; CHECK-NEXT:    [[ARRAYIDX_PRELOOP:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[IV_PRELOOP]]
; CHECK-NEXT:    [[TMP9:%.*]] = load i32, ptr [[ARRAYIDX_PRELOOP]], align 4
; CHECK-NEXT:    [[ARRAYIDX2_PRELOOP:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[IV_PRELOOP]]
; CHECK-NEXT:    [[TMP10:%.*]] = load i32, ptr [[ARRAYIDX2_PRELOOP]], align 4
; CHECK-NEXT:    [[MUL_PRELOOP:%.*]] = mul nsw i32 [[TMP10]], [[TMP9]]
; CHECK-NEXT:    [[ARRAYIDX3_PRELOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[IV_PRELOOP]]
; CHECK-NEXT:    br i1 [[CMP1_PRELOOP]], label [[FOR_INC_PRELOOP]], label [[IF_ELSE_PRELOOP:%.*]]
; CHECK:       if.else.preloop:
; CHECK-NEXT:    [[TMP11:%.*]] = load i32, ptr [[ARRAYIDX3_PRELOOP]], align 4
; CHECK-NEXT:    [[ADD_PRELOOP:%.*]] = add nsw i32 [[TMP11]], [[MUL_PRELOOP]]
; CHECK-NEXT:    br label [[FOR_INC_PRELOOP]]
; CHECK:       for.inc.preloop:
; CHECK-NEXT:    [[STOREMERGE_PRELOOP:%.*]] = phi i32 [ [[ADD_PRELOOP]], [[IF_ELSE_PRELOOP]] ], [ [[MUL_PRELOOP]], [[FOR_BODY_PRELOOP]] ]
; CHECK-NEXT:    store i32 [[STOREMERGE_PRELOOP]], ptr [[ARRAYIDX3_PRELOOP]], align 4
; CHECK-NEXT:    [[DEC_PRELOOP]] = add nsw i32 [[IV_PRELOOP]], -1
; CHECK-NEXT:    [[CMP_PRELOOP:%.*]] = icmp eq i32 [[DEC_PRELOOP]], [[M]]
; CHECK-NEXT:    [[TMP12:%.*]] = icmp sgt i32 [[DEC_PRELOOP]], [[EXIT_PRELOOP_AT]]
; CHECK-NEXT:    [[TMP13:%.*]] = xor i1 [[TMP12]], true
; CHECK-NEXT:    br i1 [[TMP13]], label [[PRELOOP_EXIT_SELECTOR:%.*]], label [[FOR_BODY_PRELOOP]], !llvm.loop [[LOOP15:![0-9]+]], !loop_constrainer.loop.clone [[META5]]
; CHECK:       preloop.exit.selector:
; CHECK-NEXT:    [[DEC_PRELOOP_LCSSA:%.*]] = phi i32 [ [[DEC_PRELOOP]], [[FOR_INC_PRELOOP]] ]
; CHECK-NEXT:    [[TMP14:%.*]] = icmp sgt i32 [[DEC_PRELOOP_LCSSA]], [[M]]
; CHECK-NEXT:    br i1 [[TMP14]], label [[PRELOOP_PSEUDO_EXIT]], label [[FOR_COND_CLEANUP_LOOPEXIT]]
; CHECK:       preloop.pseudo.exit:
; CHECK-NEXT:    [[IV_PRELOOP_COPY]] = phi i32 [ 1024, [[FOR_BODY_PREHEADER]] ], [ [[DEC_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
; CHECK-NEXT:    [[INDVAR_END]] = phi i32 [ 1024, [[FOR_BODY_PREHEADER]] ], [ [[DEC_PRELOOP_LCSSA]], [[PRELOOP_EXIT_SELECTOR]] ]
; CHECK-NEXT:    br label [[MAINLOOP]]
; CHECK:       postloop:
; CHECK-NEXT:    br label [[FOR_BODY_POSTLOOP:%.*]]
; CHECK:       for.body.postloop:
; CHECK-NEXT:    [[IV_POSTLOOP:%.*]] = phi i32 [ [[DEC_POSTLOOP:%.*]], [[FOR_INC_POSTLOOP:%.*]] ], [ [[IV_COPY]], [[POSTLOOP]] ]
; CHECK-NEXT:    [[CMP1_POSTLOOP:%.*]] = icmp slt i32 [[IV_POSTLOOP]], 1024
; CHECK-NEXT:    [[ARRAYIDX_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[B]], i32 [[IV_POSTLOOP]]
; CHECK-NEXT:    [[TMP15:%.*]] = load i32, ptr [[ARRAYIDX_POSTLOOP]], align 4
; CHECK-NEXT:    [[ARRAYIDX2_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[C]], i32 [[IV_POSTLOOP]]
; CHECK-NEXT:    [[TMP16:%.*]] = load i32, ptr [[ARRAYIDX2_POSTLOOP]], align 4
; CHECK-NEXT:    [[MUL_POSTLOOP:%.*]] = mul nsw i32 [[TMP16]], [[TMP15]]
; CHECK-NEXT:    [[ARRAYIDX3_POSTLOOP:%.*]] = getelementptr inbounds i32, ptr [[A]], i32 [[IV_POSTLOOP]]
; CHECK-NEXT:    br i1 [[CMP1_POSTLOOP]], label [[FOR_INC_POSTLOOP]], label [[IF_ELSE_POSTLOOP:%.*]]
; CHECK:       if.else.postloop:
; CHECK-NEXT:    [[TMP17:%.*]] = load i32, ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    [[ADD_POSTLOOP:%.*]] = add nsw i32 [[TMP17]], [[MUL_POSTLOOP]]
; CHECK-NEXT:    br label [[FOR_INC_POSTLOOP]]
; CHECK:       for.inc.postloop:
; CHECK-NEXT:    [[STOREMERGE_POSTLOOP:%.*]] = phi i32 [ [[ADD_POSTLOOP]], [[IF_ELSE_POSTLOOP]] ], [ [[MUL_POSTLOOP]], [[FOR_BODY_POSTLOOP]] ]
; CHECK-NEXT:    store i32 [[STOREMERGE_POSTLOOP]], ptr [[ARRAYIDX3_POSTLOOP]], align 4
; CHECK-NEXT:    [[DEC_POSTLOOP]] = add nsw i32 [[IV_POSTLOOP]], -1
; CHECK-NEXT:    [[CMP_POSTLOOP:%.*]] = icmp eq i32 [[DEC_POSTLOOP]], [[M]]
; CHECK-NEXT:    br i1 [[CMP_POSTLOOP]], label [[FOR_COND_CLEANUP_LOOPEXIT_LOOPEXIT:%.*]], label [[FOR_BODY_POSTLOOP]], !llvm.loop [[LOOP16:![0-9]+]], !loop_constrainer.loop.clone [[META5]]
;
entry:
  %cmp14 = icmp slt i32 %M, 1024
  br i1 %cmp14, label %for.body, label %for.cond.cleanup

for.cond.cleanup:                                 ; preds = %for.inc, %entry
  ret void

for.body:                                         ; preds = %entry, %for.inc
  %iv = phi i32 [ %dec, %for.inc ], [ 1024, %entry ]
  %cmp1 = icmp slt i32 %iv, 1024
  %arrayidx = getelementptr inbounds i32, ptr %b, i32 %iv
  %0 = load i32, ptr %arrayidx, align 4
  %arrayidx2 = getelementptr inbounds i32, ptr %c, i32 %iv
  %1 = load i32, ptr %arrayidx2, align 4
  %mul = mul nsw i32 %1, %0
  %arrayidx3 = getelementptr inbounds i32, ptr %a, i32 %iv
  br i1 %cmp1, label %for.inc, label %if.else

if.else:                                          ; preds = %for.body
  %2 = load i32, ptr %arrayidx3, align 4
  %add = add nsw i32 %2, %mul
  br label %for.inc

for.inc:                                          ; preds = %for.body, %if.else
  %storemerge = phi i32 [ %add, %if.else ], [ %mul, %for.body ]
  store i32 %storemerge, ptr %arrayidx3, align 4
  %dec = add nsw i32 %iv, -1
  %cmp = icmp eq i32 %dec, %M
  br i1 %cmp, label %for.cond.cleanup, label %for.body
}

;; Negative test
define void @test_dec_bound_with_smaller_start_than_bound(i64 %0) {
; CHECK-LABEL: define void @test_dec_bound_with_smaller_start_than_bound(
; CHECK-SAME: i64 [[TMP0:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[DEC:%.*]], [[FOR_DEC:%.*]] ], [ 0, [[ENTRY:%.*]] ]
; CHECK-NEXT:    [[TMP1:%.*]] = icmp slt i64 [[IV]], [[TMP0]]
; CHECK-NEXT:    br i1 [[TMP1]], label [[IF_ELSE:%.*]], label [[FOR_DEC]]
; CHECK:       if.else:
; CHECK-NEXT:    br label [[FOR_DEC]]
; CHECK:       for.dec:
; CHECK-NEXT:    [[DEC]] = sub nuw nsw i64 [[IV]], 1
; CHECK-NEXT:    [[TMP2:%.*]] = icmp slt i64 [[DEC]], 1
; CHECK-NEXT:    br i1 [[TMP2]], label [[EXIT:%.*]], label [[FOR_BODY]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.body

for.body:                                                ; preds = %for.dec, %entry
  %iv = phi i64 [ %dec, %for.dec ], [ 0, %entry ]
  %1 = icmp slt i64 %iv, %0
  br i1 %1, label %if.else, label %for.dec

if.else:                                                ; preds = %for.body
  br label %for.dec

for.dec:                                                ; preds = %if.else, %for.body
  %dec = sub nuw nsw i64 %iv, 1
  %2 = icmp slt i64 %dec, 1
  br i1 %2, label %exit, label %for.body

exit:                                               ; preds = %for.dec
  ret void
}

;; Negative test
define void @test_inc_bound_with_bigger_start_than_bound(i32 %0) {
; CHECK-LABEL: define void @test_inc_bound_with_bigger_start_than_bound(
; CHECK-SAME: i32 [[TMP0:%.*]]) {
; CHECK-NEXT:  entry:
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.body:
; CHECK-NEXT:    [[IV:%.*]] = phi i32 [ [[INC:%.*]], [[FOR_INC:%.*]] ], [ 200, [[ENTRY:%.*]] ]
; CHECK-NEXT:    [[TMP1:%.*]] = icmp slt i32 [[IV]], [[TMP0]]
; CHECK-NEXT:    br i1 [[TMP1]], label [[IF_ELSE:%.*]], label [[FOR_INC]]
; CHECK:       if.else:
; CHECK-NEXT:    br label [[FOR_INC]]
; CHECK:       for.inc:
; CHECK-NEXT:    [[INC]] = add nsw i32 [[IV]], 1
; CHECK-NEXT:    [[TMP2:%.*]] = icmp sgt i32 [[INC]], 100
; CHECK-NEXT:    br i1 [[TMP2]], label [[EXIT:%.*]], label [[FOR_BODY]]
; CHECK:       exit:
; CHECK-NEXT:    ret void
;
entry:
  br label %for.body

for.body:                                                ; preds = %for.inc, %entry
  %iv = phi i32 [ %inc, %for.inc ], [ 200, %entry ]
  %1 = icmp slt i32 %iv, %0
  br i1 %1, label %if.else, label %for.inc

if.else:                                                ; preds = %for.body
  br label %for.inc

for.inc:                                                ; preds = %if.else, %for.body
  %inc = add nsw i32 %iv, 1
  %2 = icmp sgt i32 %inc, 100
  br i1 %2, label %exit, label %for.body

exit:                                                ; preds = %for.inc
  ret void
}