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llvm / llvm-project / 6f4dd1b2dca8ef877eb2447af8b33ae7e68ba1be / . / llvm / test / Transforms / DeadStoreElimination / multiblock-loops.ll
blob: e555e04f51d1c4875de24dd32ab16e4b216b5ab6 [file] [log] [blame]
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -basic-aa -dse -S | FileCheck %s
target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
define void @test13(i32* noalias %P) {
; CHECK-LABEL: @test13(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: for:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]], align 4
; CHECK-NEXT: br i1 false, label [[FOR]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: ret void
;
entry:
br label %for
for:
store i32 0, i32* %P
br i1 false, label %for, label %end
end:
ret void
}
define void @test14(i32* noalias %P) {
; CHECK-LABEL: @test14(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: for:
; CHECK-NEXT: store i32 0, i32* [[P:%.*]], align 4
; CHECK-NEXT: br i1 false, label [[FOR]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: ret void
;
entry:
store i32 1, i32* %P
br label %for
for:
store i32 0, i32* %P
br i1 false, label %for, label %end
end:
ret void
}
define void @test18(i32* noalias %P) {
; CHECK-LABEL: @test18(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[P2:%.*]] = bitcast i32* [[P:%.*]] to i8*
; CHECK-NEXT: store i32 0, i32* [[P]], align 4
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: for:
; CHECK-NEXT: store i8 1, i8* [[P2]], align 1
; CHECK-NEXT: [[X:%.*]] = load i32, i32* [[P]], align 4
; CHECK-NEXT: store i8 2, i8* [[P2]], align 1
; CHECK-NEXT: br i1 false, label [[FOR]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: ret void
;
entry:
%P2 = bitcast i32* %P to i8*
store i32 0, i32* %P
br label %for
for:
store i8 1, i8* %P2
%x = load i32, i32* %P
store i8 2, i8* %P2
br i1 false, label %for, label %end
end:
ret void
}
define void @test21(i32* noalias %P) {
; CHECK-LABEL: @test21(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[ARRAYIDX0:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i64 1
; CHECK-NEXT: [[P3:%.*]] = bitcast i32* [[ARRAYIDX0]] to i8*
; CHECK-NEXT: [[TMP0:%.*]] = getelementptr inbounds i8, i8* [[P3]], i64 4
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[TMP0]], i8 0, i64 24, i1 false)
; CHECK-NEXT: br label [[FOR:%.*]]
; CHECK: for:
; CHECK-NEXT: [[ARRAYIDX1:%.*]] = getelementptr inbounds i32, i32* [[P]], i64 1
; CHECK-NEXT: store i32 1, i32* [[ARRAYIDX1]], align 4
; CHECK-NEXT: br i1 false, label [[FOR]], label [[END:%.*]]
; CHECK: end:
; CHECK-NEXT: ret void
;
entry:
%arrayidx0 = getelementptr inbounds i32, i32* %P, i64 1
%p3 = bitcast i32* %arrayidx0 to i8*
call void @llvm.memset.p0i8.i64(i8* %p3, i8 0, i64 28, i32 4, i1 false)
br label %for
for:
%arrayidx1 = getelementptr inbounds i32, i32* %P, i64 1
store i32 1, i32* %arrayidx1, align 4
br i1 false, label %for, label %end
end:
ret void
}
define void @test_loop(i32 %N, i32* noalias nocapture readonly %A, i32* noalias nocapture readonly %x, i32* noalias nocapture %b) local_unnamed_addr {
; CHECK-LABEL: @test_loop(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CMP27:%.*]] = icmp sgt i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[CMP27]], label [[FOR_BODY4_LR_PH_PREHEADER:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK: for.body4.lr.ph.preheader:
; CHECK-NEXT: br label [[FOR_BODY4_LR_PH:%.*]]
; CHECK: for.cond.cleanup:
; CHECK-NEXT: ret void
; CHECK: for.body4.lr.ph:
; CHECK-NEXT: [[I_028:%.*]] = phi i32 [ [[INC11:%.*]], [[FOR_COND_CLEANUP3:%.*]] ], [ 0, [[FOR_BODY4_LR_PH_PREHEADER]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i32 [[I_028]]
; CHECK-NEXT: [[MUL:%.*]] = mul nsw i32 [[I_028]], [[N]]
; CHECK-NEXT: br label [[FOR_BODY4:%.*]]
; CHECK: for.body4:
; CHECK-NEXT: [[TMP0:%.*]] = phi i32 [ 0, [[FOR_BODY4_LR_PH]] ], [ [[ADD9:%.*]], [[FOR_BODY4]] ]
; CHECK-NEXT: [[J_026:%.*]] = phi i32 [ 0, [[FOR_BODY4_LR_PH]] ], [ [[INC:%.*]], [[FOR_BODY4]] ]
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[J_026]], [[MUL]]
; CHECK-NEXT: [[ARRAYIDX5:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i32 [[ADD]]
; CHECK-NEXT: [[TMP1:%.*]] = load i32, i32* [[ARRAYIDX5]], align 4
; CHECK-NEXT: [[ARRAYIDX6:%.*]] = getelementptr inbounds i32, i32* [[X:%.*]], i32 [[J_026]]
; CHECK-NEXT: [[TMP2:%.*]] = load i32, i32* [[ARRAYIDX6]], align 4
; CHECK-NEXT: [[MUL7:%.*]] = mul nsw i32 [[TMP2]], [[TMP1]]
; CHECK-NEXT: [[ADD9]] = add nsw i32 [[MUL7]], [[TMP0]]
; CHECK-NEXT: [[INC]] = add nuw nsw i32 [[J_026]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i32 [[INC]], [[N]]
; CHECK-NEXT: br i1 [[EXITCOND]], label [[FOR_COND_CLEANUP3]], label [[FOR_BODY4]]
; CHECK: for.cond.cleanup3:
; CHECK-NEXT: store i32 [[ADD9]], i32* [[ARRAYIDX]], align 4
; CHECK-NEXT: [[INC11]] = add nuw nsw i32 [[I_028]], 1
; CHECK-NEXT: [[EXITCOND29:%.*]] = icmp eq i32 [[INC11]], [[N]]
; CHECK-NEXT: br i1 [[EXITCOND29]], label [[FOR_COND_CLEANUP]], label [[FOR_BODY4_LR_PH]]
;
entry:
%cmp27 = icmp sgt i32 %N, 0
br i1 %cmp27, label %for.body4.lr.ph.preheader, label %for.cond.cleanup
for.body4.lr.ph.preheader: ; preds = %entry
br label %for.body4.lr.ph
for.cond.cleanup: ; preds = %for.cond.cleanup3, %entry
ret void
for.body4.lr.ph: ; preds = %for.body4.lr.ph.preheader, %for.cond.cleanup3
%i.028 = phi i32 [ %inc11, %for.cond.cleanup3 ], [ 0, %for.body4.lr.ph.preheader ]
%arrayidx = getelementptr inbounds i32, i32* %b, i32 %i.028
store i32 0, i32* %arrayidx, align 4
%mul = mul nsw i32 %i.028, %N
br label %for.body4
for.body4: ; preds = %for.body4, %for.body4.lr.ph
%0 = phi i32 [ 0, %for.body4.lr.ph ], [ %add9, %for.body4 ]
%j.026 = phi i32 [ 0, %for.body4.lr.ph ], [ %inc, %for.body4 ]
%add = add nsw i32 %j.026, %mul
%arrayidx5 = getelementptr inbounds i32, i32* %A, i32 %add
%1 = load i32, i32* %arrayidx5, align 4
%arrayidx6 = getelementptr inbounds i32, i32* %x, i32 %j.026
%2 = load i32, i32* %arrayidx6, align 4
%mul7 = mul nsw i32 %2, %1
%add9 = add nsw i32 %mul7, %0
%inc = add nuw nsw i32 %j.026, 1
%exitcond = icmp eq i32 %inc, %N
br i1 %exitcond, label %for.cond.cleanup3, label %for.body4
for.cond.cleanup3: ; preds = %for.body4
store i32 %add9, i32* %arrayidx, align 4
%inc11 = add nuw nsw i32 %i.028, 1
%exitcond29 = icmp eq i32 %inc11, %N
br i1 %exitcond29, label %for.cond.cleanup, label %for.body4.lr.ph
}
define i32 @test_if(i1 %c, i32* %p, i32 %i) {
; CHECK-LABEL: @test_if(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[PH:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[BB3:%.*]] ]
; CHECK-NEXT: [[INC]] = add i32 [[PH]], 1
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i32 [[PH]]
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB2:%.*]], label [[BB3]]
; CHECK: bb2:
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: store i32 2, i32* [[GEP]], align 4
; CHECK-NEXT: [[C1:%.*]] = icmp slt i32 [[PH]], 10
; CHECK-NEXT: br i1 [[C1]], label [[BB1]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret i32 0
;
entry:
br label %bb1
bb1:
%ph = phi i32 [ 0, %entry ], [ %inc, %bb3 ]
%inc = add i32 %ph, 1
%gep = getelementptr inbounds i32, i32* %p, i32 %ph
store i32 %i, i32* %gep, align 4
br i1 %c, label %bb2, label %bb3
bb2:
br label %bb3
bb3:
store i32 2, i32* %gep, align 4
%c1 = icmp slt i32 %ph, 10
br i1 %c1, label %bb1, label %exit
exit:
ret i32 0
}
define i32 @test_if2(i1 %c, i32* %p, i32 %i) {
; CHECK-LABEL: @test_if2(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[PH:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[BB2:%.*]] ], [ [[INC]], [[BB3:%.*]] ]
; CHECK-NEXT: [[INC]] = add i32 [[PH]], 1
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i32 [[PH]]
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB2]], label [[BB3]]
; CHECK: bb2:
; CHECK-NEXT: store i32 2, i32* [[GEP]], align 4
; CHECK-NEXT: [[C1:%.*]] = icmp slt i32 [[PH]], 10
; CHECK-NEXT: br i1 [[C1]], label [[BB1]], label [[EXIT:%.*]]
; CHECK: bb3:
; CHECK-NEXT: store i32 3, i32* [[GEP]], align 4
; CHECK-NEXT: [[C2:%.*]] = icmp slt i32 [[PH]], 5
; CHECK-NEXT: br i1 [[C2]], label [[BB1]], label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: ret i32 0
;
entry:
br label %bb1
bb1:
%ph = phi i32 [ 0, %entry ], [ %inc, %bb2 ], [ %inc, %bb3 ]
%inc = add i32 %ph, 1
%gep = getelementptr inbounds i32, i32* %p, i32 %ph
store i32 %i, i32* %gep, align 4
br i1 %c, label %bb2, label %bb3
bb2:
store i32 2, i32* %gep, align 4
%c1 = icmp slt i32 %ph, 10
br i1 %c1, label %bb1, label %exit
bb3:
store i32 3, i32* %gep, align 4
%c2 = icmp slt i32 %ph, 5
br i1 %c2, label %bb1, label %exit
exit:
ret i32 0
}
define i32 @test_if3(i1 %c, i32* %p, i32 %i) {
; CHECK-LABEL: @test_if3(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[PH:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[BB3:%.*]] ]
; CHECK-NEXT: [[INC]] = add i32 [[PH]], 1
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i32 [[PH]]
; CHECK-NEXT: store i32 [[I:%.*]], i32* [[GEP]], align 4
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB2:%.*]], label [[BB3]]
; CHECK: bb2:
; CHECK-NEXT: store i32 2, i32* [[GEP]], align 4
; CHECK-NEXT: br label [[BB3]]
; CHECK: bb3:
; CHECK-NEXT: [[C1:%.*]] = icmp slt i32 [[PH]], 10
; CHECK-NEXT: br i1 [[C1]], label [[BB1]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret i32 0
;
entry:
br label %bb1
bb1:
%ph = phi i32 [ 0, %entry ], [ %inc, %bb3 ]
%inc = add i32 %ph, 1
%gep = getelementptr inbounds i32, i32* %p, i32 %ph
store i32 %i, i32* %gep, align 4
br i1 %c, label %bb2, label %bb3
bb2:
store i32 2, i32* %gep, align 4
br label %bb3
bb3:
%c1 = icmp slt i32 %ph, 10
br i1 %c1, label %bb1, label %exit
exit:
ret i32 0
}
define i32 @test_if4(i1 %c, i32* %p, i32 %i) {
; CHECK-LABEL: @test_if4(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[PH:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[BB1]] ], [ [[INC]], [[BB2:%.*]] ]
; CHECK-NEXT: [[INC]] = add i32 [[PH]], 1
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i32 [[PH]]
; CHECK-NEXT: store i32 [[I:%.*]], i32* [[GEP]], align 4
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB2]], label [[BB1]]
; CHECK: bb2:
; CHECK-NEXT: store i32 2, i32* [[GEP]], align 4
; CHECK-NEXT: [[C1:%.*]] = icmp slt i32 [[PH]], 10
; CHECK-NEXT: br i1 [[C1]], label [[BB1]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret i32 0
;
entry:
br label %bb1
bb1:
%ph = phi i32 [ 0, %entry ], [ %inc, %bb1 ], [ %inc, %bb2 ]
%inc = add i32 %ph, 1
%gep = getelementptr inbounds i32, i32* %p, i32 %ph
store i32 %i, i32* %gep, align 4
br i1 %c, label %bb2, label %bb1
bb2:
store i32 2, i32* %gep, align 4
%c1 = icmp slt i32 %ph, 10
br i1 %c1, label %bb1, label %exit
exit:
ret i32 0
}
declare void @clobber()
define i32 @test_self(i1 %c, i32* %p, i32 %i) {
; CHECK-LABEL: @test_self(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[PH:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[BB1]] ], [ [[INC]], [[BB2:%.*]] ]
; CHECK-NEXT: [[INC]] = add i32 [[PH]], 1
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i32, i32* [[P:%.*]], i32 [[PH]]
; CHECK-NEXT: store i32 1, i32* [[GEP]], align 4
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: store i32 2, i32* [[GEP]], align 4
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB2]], label [[BB1]]
; CHECK: bb2:
; CHECK-NEXT: store i32 3, i32* [[GEP]], align 4
; CHECK-NEXT: [[C1:%.*]] = icmp slt i32 [[PH]], 10
; CHECK-NEXT: br i1 [[C1]], label [[BB1]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: ret i32 0
;
entry:
br label %bb1
bb1:
%ph = phi i32 [ 0, %entry ], [ %inc, %bb1 ], [ %inc, %bb2 ]
%inc = add i32 %ph, 1
%gep = getelementptr inbounds i32, i32* %p, i32 %ph
store i32 1, i32* %gep, align 4
call void @clobber()
store i32 2, i32* %gep, align 4
br i1 %c, label %bb2, label %bb1
bb2:
store i32 3, i32* %gep, align 4
%c1 = icmp slt i32 %ph, 10
br i1 %c1, label %bb1, label %exit
exit:
ret i32 0
}
define i32 @test_selfalloca(i1 %c, i32 %i) {
; CHECK-LABEL: @test_selfalloca(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[P:%.*]] = alloca i32, align 4
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[PH:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[BB1]] ], [ [[INC]], [[BB2:%.*]] ]
; CHECK-NEXT: [[INC]] = add i32 [[PH]], 1
; CHECK-NEXT: [[GEP:%.*]] = getelementptr inbounds i32, i32* [[P]], i32 [[PH]]
; CHECK-NEXT: call void @clobber()
; CHECK-NEXT: store i32 2, i32* [[GEP]], align 4
; CHECK-NEXT: br i1 [[C:%.*]], label [[BB2]], label [[BB1]]
; CHECK: bb2:
; CHECK-NEXT: store i32 3, i32* [[GEP]], align 4
; CHECK-NEXT: [[C1:%.*]] = icmp slt i32 [[PH]], 10
; CHECK-NEXT: br i1 [[C1]], label [[BB1]], label [[EXIT:%.*]]
; CHECK: exit:
; CHECK-NEXT: [[PG:%.*]] = getelementptr inbounds i32, i32* [[P]], i32 [[I:%.*]]
; CHECK-NEXT: [[L:%.*]] = load i32, i32* [[PG]], align 4
; CHECK-NEXT: ret i32 [[L]]
;
entry:
%p = alloca i32, align 4
br label %bb1
bb1:
%ph = phi i32 [ 0, %entry ], [ %inc, %bb1 ], [ %inc, %bb2 ]
%inc = add i32 %ph, 1
%gep = getelementptr inbounds i32, i32* %p, i32 %ph
store i32 1, i32* %gep, align 4
call void @clobber()
store i32 2, i32* %gep, align 4
br i1 %c, label %bb2, label %bb1
bb2:
store i32 3, i32* %gep, align 4
%c1 = icmp slt i32 %ph, 10
br i1 %c1, label %bb1, label %exit
exit:
%pg = getelementptr inbounds i32, i32* %p, i32 %i
%l = load i32, i32* %pg
ret i32 %l
}
declare i1 @cond() readnone
; TODO: We can eliminate the store in for.header, but we currently hit a MemoryPhi.
define void @loop_multiple_def_uses(i32* noalias %P) {
; CHECK-LABEL: @loop_multiple_def_uses(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_HEADER:%.*]]
; CHECK: for.header:
; CHECK-NEXT: store i32 1, i32* [[P:%.*]], align 4
; CHECK-NEXT: [[C1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C1]], label [[FOR_BODY:%.*]], label [[END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: store i32 2, i32* [[P]], align 4
; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[P]], align 4
; CHECK-NEXT: br label [[FOR_HEADER]]
; CHECK: end:
; CHECK-NEXT: store i32 3, i32* [[P]], align 4
; CHECK-NEXT: ret void
;
entry:
br label %for.header
for.header:
store i32 1, i32* %P, align 4
%c1 = call i1 @cond()
br i1 %c1, label %for.body, label %end
for.body:
store i32 2, i32* %P, align 4
%lv = load i32, i32* %P
br label %for.header
end:
store i32 3, i32* %P, align 4
ret void
}
; We cannot eliminate the store in for.header, as it is only partially
; overwritten in for.body and read afterwards.
define void @loop_multiple_def_uses_partial_write(i32* noalias %p) {
; CHECK-LABEL: @loop_multiple_def_uses_partial_write(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_HEADER:%.*]]
; CHECK: for.header:
; CHECK-NEXT: store i32 1239491, i32* [[P:%.*]], align 4
; CHECK-NEXT: [[C1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C1]], label [[FOR_BODY:%.*]], label [[END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: [[C:%.*]] = bitcast i32* [[P]] to i8*
; CHECK-NEXT: store i8 1, i8* [[C]], align 4
; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[P]], align 4
; CHECK-NEXT: br label [[FOR_HEADER]]
; CHECK: end:
; CHECK-NEXT: store i32 3, i32* [[P]], align 4
; CHECK-NEXT: ret void
;
entry:
br label %for.header
for.header:
store i32 1239491, i32* %p, align 4
%c1 = call i1 @cond()
br i1 %c1, label %for.body, label %end
for.body:
%c = bitcast i32* %p to i8*
store i8 1, i8* %c, align 4
%lv = load i32, i32* %p
br label %for.header
end:
store i32 3, i32* %p, align 4
ret void
}
; We cannot eliminate the store in for.header, as the location is not overwritten
; in for.body and read afterwards.
define void @loop_multiple_def_uses_mayalias_write(i32* %p, i32* %q) {
; CHECK-LABEL: @loop_multiple_def_uses_mayalias_write(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_HEADER:%.*]]
; CHECK: for.header:
; CHECK-NEXT: store i32 1239491, i32* [[P:%.*]], align 4
; CHECK-NEXT: [[C1:%.*]] = call i1 @cond()
; CHECK-NEXT: br i1 [[C1]], label [[FOR_BODY:%.*]], label [[END:%.*]]
; CHECK: for.body:
; CHECK-NEXT: store i32 1, i32* [[Q:%.*]], align 4
; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[P]], align 4
; CHECK-NEXT: br label [[FOR_HEADER]]
; CHECK: end:
; CHECK-NEXT: store i32 3, i32* [[P]], align 4
; CHECK-NEXT: ret void
;
entry:
br label %for.header
for.header:
store i32 1239491, i32* %p, align 4
%c1 = call i1 @cond()
br i1 %c1, label %for.body, label %end
for.body:
store i32 1, i32* %q, align 4
%lv = load i32, i32* %p
br label %for.header
end:
store i32 3, i32* %p, align 4
ret void
}
%struct.hoge = type { i32, i32 }
@global = external local_unnamed_addr global %struct.hoge*, align 8
define void @widget(i8* %tmp) {
; CHECK-LABEL: @widget(
; CHECK-NEXT: bb:
; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 [[TMP:%.*]], i8* nonnull align 16 undef, i64 64, i1 false)
; CHECK-NEXT: br label [[BB1:%.*]]
; CHECK: bb1:
; CHECK-NEXT: [[TMP2:%.*]] = load %struct.hoge*, %struct.hoge** @global, align 8
; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds [[STRUCT_HOGE:%.*]], %struct.hoge* [[TMP2]], i64 undef, i32 1
; CHECK-NEXT: store i32 0, i32* [[TMP3]], align 4
; CHECK-NEXT: [[TMP4:%.*]] = load %struct.hoge*, %struct.hoge** @global, align 8
; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds [[STRUCT_HOGE]], %struct.hoge* [[TMP4]], i64 undef, i32 1
; CHECK-NEXT: store i32 10, i32* [[TMP5]], align 4
; CHECK-NEXT: br label [[BB1]]
;
bb:
call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 1 %tmp, i8* nonnull align 16 undef, i64 64, i1 false)
br label %bb1
bb1: ; preds = %bb1, %bb
%tmp2 = load %struct.hoge*, %struct.hoge** @global, align 8
%tmp3 = getelementptr inbounds %struct.hoge, %struct.hoge* %tmp2, i64 undef, i32 1
store i32 0, i32* %tmp3, align 4
%tmp4 = load %struct.hoge*, %struct.hoge** @global, align 8
%tmp5 = getelementptr inbounds %struct.hoge, %struct.hoge* %tmp4, i64 undef, i32 1
store i32 10, i32* %tmp5, align 4
br label %bb1
}
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg)
@x = global [10 x i16] zeroinitializer, align 1
; Make sure we do not eliminate the store in %do.body, because it writes to
; multiple locations in the loop and the store in %if.end10 only stores to
; the last one.
define i16 @test_loop_carried_dep() {
; CHECK-LABEL: @test_loop_carried_dep(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[DO_BODY:%.*]]
; CHECK: do.body:
; CHECK-NEXT: [[I_0:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[IF_END:%.*]] ]
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 [[I_0]]
; CHECK-NEXT: store i16 2, i16* [[ARRAYIDX2]], align 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i16 [[I_0]], 4
; CHECK-NEXT: br i1 [[EXITCOND]], label [[IF_END10:%.*]], label [[IF_END]]
; CHECK: if.end:
; CHECK-NEXT: [[INC]] = add nuw nsw i16 [[I_0]], 1
; CHECK-NEXT: br label [[DO_BODY]]
; CHECK: if.end10:
; CHECK-NEXT: store i16 1, i16* [[ARRAYIDX2]], align 1
; CHECK-NEXT: ret i16 0
;
entry:
br label %do.body
do.body: ; preds = %if.end, %entry
%i.0 = phi i16 [ 0, %entry ], [ %inc, %if.end ]
%arrayidx2 = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 %i.0
store i16 2, i16* %arrayidx2, align 1
%exitcond = icmp eq i16 %i.0, 4
br i1 %exitcond, label %if.end10, label %if.end
if.end: ; preds = %do.body
%inc = add nuw nsw i16 %i.0, 1
br label %do.body
if.end10: ; preds = %do.body
store i16 1, i16* %arrayidx2, align 1
ret i16 0
}
; Similar to above, but with an irreducible loop. The stores should not be removed.
define i16 @irreducible(i1 %c) {
; CHECK-LABEL: @irreducible(
; CHECK-NEXT: entry:
; CHECK-NEXT: br i1 [[C:%.*]], label [[A:%.*]], label [[B:%.*]]
; CHECK: A:
; CHECK-NEXT: [[I_0:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[B]] ]
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 [[I_0]]
; CHECK-NEXT: br label [[B]]
; CHECK: B:
; CHECK-NEXT: [[J_0:%.*]] = phi i16 [ 0, [[ENTRY]] ], [ [[I_0]], [[A]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 [[J_0]]
; CHECK-NEXT: store i16 2, i16* [[ARRAYIDX]], align 1
; CHECK-NEXT: [[INC]] = add nuw nsw i16 [[J_0]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i16 [[J_0]], 4
; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT:%.*]], label [[A]]
; CHECK: exit:
; CHECK-NEXT: store i16 1, i16* [[ARRAYIDX]], align 1
; CHECK-NEXT: ret i16 0
;
entry:
br i1 %c, label %A, label %B
A:
%i.0 = phi i16 [ 0, %entry ], [ %inc, %B ]
%arrayidx2 = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 %i.0
br label %B
B:
%j.0 = phi i16 [ 0, %entry ], [ %i.0, %A ]
%arrayidx = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 %j.0
store i16 2, i16* %arrayidx, align 1
%inc = add nuw nsw i16 %j.0, 1
%exitcond = icmp eq i16 %j.0, 4
br i1 %exitcond, label %exit, label %A
exit:
store i16 1, i16* %arrayidx, align 1
ret i16 0
}
; An irreducible loop inside another loop.
define i16 @irreducible_nested() {
; CHECK-LABEL: @irreducible_nested(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[OUTER:%.*]]
; CHECK: outer:
; CHECK-NEXT: [[X:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[INCX:%.*]], [[OUTERL:%.*]] ]
; CHECK-NEXT: [[C:%.*]] = icmp sgt i16 [[X]], 2
; CHECK-NEXT: br i1 [[C]], label [[A:%.*]], label [[B:%.*]]
; CHECK: A:
; CHECK-NEXT: [[I_0:%.*]] = phi i16 [ 0, [[OUTER]] ], [ [[INC:%.*]], [[B]] ]
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 [[I_0]]
; CHECK-NEXT: br label [[B]]
; CHECK: B:
; CHECK-NEXT: [[J_0:%.*]] = phi i16 [ 0, [[OUTER]] ], [ [[I_0]], [[A]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 [[J_0]]
; CHECK-NEXT: store i16 2, i16* [[ARRAYIDX]], align 1
; CHECK-NEXT: [[INC]] = add nuw nsw i16 [[J_0]], 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i16 [[J_0]], 4
; CHECK-NEXT: br i1 [[EXITCOND]], label [[OUTERL]], label [[A]]
; CHECK: outerl:
; CHECK-NEXT: store i16 1, i16* [[ARRAYIDX]], align 1
; CHECK-NEXT: [[INCX]] = add nuw nsw i16 [[X]], 1
; CHECK-NEXT: [[EXITCONDX:%.*]] = icmp eq i16 [[X]], 4
; CHECK-NEXT: br i1 [[EXITCONDX]], label [[END:%.*]], label [[OUTER]]
; CHECK: end:
; CHECK-NEXT: ret i16 0
;
entry:
br label %outer
outer:
%x = phi i16 [ 0, %entry ], [ %incx, %outerl ]
%c = icmp sgt i16 %x, 2
br i1 %c, label %A, label %B
A:
%i.0 = phi i16 [ 0, %outer ], [ %inc, %B ]
%arrayidx2 = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 %i.0
br label %B
B:
%j.0 = phi i16 [ 0, %outer ], [ %i.0, %A ]
%arrayidx = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 %j.0
store i16 2, i16* %arrayidx, align 1
%inc = add nuw nsw i16 %j.0, 1
%exitcond = icmp eq i16 %j.0, 4
br i1 %exitcond, label %outerl, label %A
outerl:
store i16 1, i16* %arrayidx, align 1
%incx = add nuw nsw i16 %x, 1
%exitcondx = icmp eq i16 %x, 4
br i1 %exitcondx, label %end, label %outer
end:
ret i16 0
}
define i16 @multi_overwrite(i1 %cond) {
; CHECK-LABEL: @multi_overwrite(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[DO_BODY:%.*]]
; CHECK: do.body:
; CHECK-NEXT: [[I_0:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[IF_END2:%.*]] ]
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 [[I_0]]
; CHECK-NEXT: store i16 2, i16* [[ARRAYIDX2]], align 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i16 [[I_0]], 4
; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT:%.*]], label [[IF_END:%.*]]
; CHECK: if.end:
; CHECK-NEXT: br i1 [[COND:%.*]], label [[DO_STORE:%.*]], label [[IF_END2]]
; CHECK: do.store:
; CHECK-NEXT: store i16 3, i16* [[ARRAYIDX2]], align 1
; CHECK-NEXT: br label [[IF_END2]]
; CHECK: if.end2:
; CHECK-NEXT: [[INC]] = add nuw nsw i16 [[I_0]], 1
; CHECK-NEXT: br label [[DO_BODY]]
; CHECK: exit:
; CHECK-NEXT: store i16 1, i16* [[ARRAYIDX2]], align 1
; CHECK-NEXT: ret i16 0
;
entry:
br label %do.body
do.body:
%i.0 = phi i16 [ 0, %entry ], [ %inc, %if.end2 ]
%arrayidx2 = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 %i.0
store i16 2, i16* %arrayidx2, align 1
%exitcond = icmp eq i16 %i.0, 4
br i1 %exitcond, label %exit, label %if.end
if.end:
br i1 %cond, label %do.store, label %if.end2
do.store:
store i16 3, i16* %arrayidx2, align 1
br label %if.end2
if.end2:
%inc = add nuw nsw i16 %i.0, 1
br label %do.body
exit:
store i16 1, i16* %arrayidx2, align 1
ret i16 0
}
define void @test(i8* noalias %data1, i8* %data2, i16* %data3, i32 %i1)
; CHECK-LABEL: @test(
; CHECK-NEXT: [[C:%.*]] = icmp eq i32 [[I1:%.*]], 0
; CHECK-NEXT: br label [[PH0:%.*]]
; CHECK: ph0:
; CHECK-NEXT: br label [[HEADER0:%.*]]
; CHECK: header0:
; CHECK-NEXT: [[P1:%.*]] = phi i32 [ 0, [[PH0]] ], [ [[PN1:%.*]], [[END1:%.*]] ]
; CHECK-NEXT: [[PN1]] = add i32 [[P1]], 1
; CHECK-NEXT: [[PC1:%.*]] = icmp slt i32 [[PN1]], 5
; CHECK-NEXT: [[V2:%.*]] = getelementptr [10 x i16], [10 x i16]* @x, i32 0, i32 [[P1]]
; CHECK-NEXT: store i16 1, i16* [[V2]], align 2
; CHECK-NEXT: br i1 [[C]], label [[THEN1:%.*]], label [[ELSE1:%.*]]
; CHECK: then1:
; CHECK-NEXT: store i16 2, i16* [[V2]], align 2
; CHECK-NEXT: br label [[END1]]
; CHECK: else1:
; CHECK-NEXT: br label [[END1]]
; CHECK: end1:
; CHECK-NEXT: br i1 [[PC1]], label [[HEADER0]], label [[END0:%.*]]
; CHECK: end0:
; CHECK-NEXT: br label [[HEADER2:%.*]]
; CHECK: header2:
; CHECK-NEXT: [[P3:%.*]] = phi i32 [ 0, [[END0]] ], [ [[PN3:%.*]], [[HEADER2]] ]
; CHECK-NEXT: [[PN3]] = add i32 [[P3]], 1
; CHECK-NEXT: [[PC3:%.*]] = icmp slt i32 [[PN3]], 5
; CHECK-NEXT: store i16 4, i16* [[V2]], align 2
; CHECK-NEXT: br i1 [[PC3]], label [[HEADER2]], label [[END2:%.*]]
; CHECK: end2:
; CHECK-NEXT: ret void
;
{
%c = icmp eq i32 %i1, 0
br label %ph0
ph0:
br label %header0
header0:
%p1 = phi i32 [0, %ph0], [%pn1, %end1]
%pn1 = add i32 %p1, 1
%pc1 = icmp slt i32 %pn1, 5
%v2 = getelementptr [10 x i16], [10 x i16]* @x, i32 0, i32 %p1
store i16 1, i16* %v2
br i1 %c, label %then1, label %else1
then1:
store i16 2, i16* %v2
br label %end1
else1:
br label %end1
end1:
br i1 %pc1, label %header0, label %end0
end0:
br label %header2
header2:
%p3 = phi i32 [0, %end0], [%pn3, %header2]
%pn3 = add i32 %p3, 1
%pc3 = icmp slt i32 %pn3, 5
store i16 4, i16* %v2
br i1 %pc3, label %header2, label %end2
end2:
ret void
}
; Similar to above, but with multiple partial overlaps
define i16 @partial_override_fromloop(i1 %c, i32 %i) {
; CHECK-LABEL: @partial_override_fromloop(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[DO_BODY:%.*]]
; CHECK: do.body:
; CHECK-NEXT: [[I_0:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[IF_END2:%.*]] ]
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 [[I_0]]
; CHECK-NEXT: store i16 2, i16* [[ARRAYIDX2]], align 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i16 [[I_0]], 4
; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT:%.*]], label [[IF_END:%.*]]
; CHECK: if.end:
; CHECK-NEXT: br i1 [[C:%.*]], label [[DO_STORE:%.*]], label [[IF_END2]]
; CHECK: do.store:
; CHECK-NEXT: store i16 3, i16* [[ARRAYIDX2]], align 1
; CHECK-NEXT: br label [[IF_END2]]
; CHECK: if.end2:
; CHECK-NEXT: [[INC]] = add nuw nsw i16 [[I_0]], 1
; CHECK-NEXT: br label [[DO_BODY]]
; CHECK: exit:
; CHECK-NEXT: [[BC:%.*]] = bitcast i16* [[ARRAYIDX2]] to i8*
; CHECK-NEXT: [[BC2:%.*]] = getelementptr inbounds i8, i8* [[BC]], i32 1
; CHECK-NEXT: store i8 10, i8* [[BC]], align 1
; CHECK-NEXT: store i8 11, i8* [[BC2]], align 1
; CHECK-NEXT: ret i16 0
;
entry:
br label %do.body
do.body:
%i.0 = phi i16 [ 0, %entry ], [ %inc, %if.end2 ]
%arrayidx2 = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 %i.0
store i16 2, i16* %arrayidx2, align 1
%exitcond = icmp eq i16 %i.0, 4
br i1 %exitcond, label %exit, label %if.end
if.end:
br i1 %c, label %do.store, label %if.end2
do.store:
store i16 3, i16* %arrayidx2, align 1
br label %if.end2
if.end2:
%inc = add nuw nsw i16 %i.0, 1
br label %do.body
exit:
%bc = bitcast i16* %arrayidx2 to i8*
%bc2 = getelementptr inbounds i8, i8* %bc, i32 1
store i8 10, i8* %bc, align 1
store i8 11, i8* %bc2, align 1
ret i16 0
}
define i16 @partial_override_overloop(i1 %c, i32 %i) {
; CHECK-LABEL: @partial_override_overloop(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FIRST:%.*]]
; CHECK: first:
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i32 [[I:%.*]]
; CHECK-NEXT: store i16 1, i16* [[ARRAYIDX]], align 1
; CHECK-NEXT: br label [[DO_BODY:%.*]]
; CHECK: do.body:
; CHECK-NEXT: [[I_0:%.*]] = phi i16 [ 0, [[FIRST]] ], [ [[INC:%.*]], [[DO_BODY]] ]
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 [[I_0]]
; CHECK-NEXT: store i16 2, i16* [[ARRAYIDX2]], align 1
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i16 [[I_0]], 4
; CHECK-NEXT: [[INC]] = add nuw nsw i16 [[I_0]], 1
; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT:%.*]], label [[DO_BODY]]
; CHECK: exit:
; CHECK-NEXT: [[BC:%.*]] = bitcast i16* [[ARRAYIDX]] to i8*
; CHECK-NEXT: [[BC2:%.*]] = getelementptr inbounds i8, i8* [[BC]], i32 1
; CHECK-NEXT: store i8 10, i8* [[BC]], align 1
; CHECK-NEXT: store i8 11, i8* [[BC2]], align 1
; CHECK-NEXT: ret i16 0
;
entry:
; Branch to first so MemoryLoc is not in the entry block.
br label %first
first:
%arrayidx = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i32 %i
store i16 1, i16* %arrayidx, align 1
br label %do.body
do.body:
%i.0 = phi i16 [ 0, %first ], [ %inc, %do.body ]
%arrayidx2 = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 %i.0
store i16 2, i16* %arrayidx2, align 1
%exitcond = icmp eq i16 %i.0, 4
%inc = add nuw nsw i16 %i.0, 1
br i1 %exitcond, label %exit, label %do.body
exit:
%bc = bitcast i16* %arrayidx to i8*
%bc2 = getelementptr inbounds i8, i8* %bc, i32 1
store i8 10, i8* %bc, align 1
store i8 11, i8* %bc2, align 1
ret i16 0
}
define i16 @partial_override_multi(i1 %c, i32 %i) {
; CHECK-LABEL: @partial_override_multi(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[DO_BODY:%.*]]
; CHECK: do.body:
; CHECK-NEXT: [[I_0:%.*]] = phi i16 [ 0, [[ENTRY:%.*]] ], [ [[INC:%.*]], [[DO_BODY]] ]
; CHECK-NEXT: [[ARRAYIDX2:%.*]] = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 [[I_0]]
; CHECK-NEXT: store i16 10, i16* [[ARRAYIDX2]], align 1
; CHECK-NEXT: [[BC:%.*]] = bitcast i16* [[ARRAYIDX2]] to i8*
; CHECK-NEXT: [[EXITCOND:%.*]] = icmp eq i16 [[I_0]], 4
; CHECK-NEXT: [[INC]] = add nuw nsw i16 [[I_0]], 1
; CHECK-NEXT: br i1 [[EXITCOND]], label [[EXIT:%.*]], label [[DO_BODY]]
; CHECK: exit:
; CHECK-NEXT: [[BC2:%.*]] = getelementptr inbounds i8, i8* [[BC]], i32 1
; CHECK-NEXT: store i8 11, i8* [[BC2]], align 1
; CHECK-NEXT: ret i16 0
;
entry:
br label %do.body
do.body:
%i.0 = phi i16 [ 0, %entry ], [ %inc, %do.body ]
%arrayidx2 = getelementptr inbounds [10 x i16], [10 x i16]* @x, i16 0, i16 %i.0
store i16 2, i16* %arrayidx2, align 1
%bc = bitcast i16* %arrayidx2 to i8*
store i8 10, i8* %bc, align 1
%exitcond = icmp eq i16 %i.0, 4
%inc = add nuw nsw i16 %i.0, 1
br i1 %exitcond, label %exit, label %do.body
exit:
%bc2 = getelementptr inbounds i8, i8* %bc, i32 1
store i8 11, i8* %bc2, align 1
ret i16 0
}
define void @InitializeMasks(i64* %p) {
; CHECK-LABEL: @InitializeMasks(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_BODY98:%.*]]
; CHECK: for.body98:
; CHECK-NEXT: [[INDVARS_IV377:%.*]] = phi i64 [ 8, [[ENTRY:%.*]] ], [ [[INC2:%.*]], [[FOR_INC140:%.*]] ], [ [[INC1:%.*]], [[FOR_INC140_THREAD:%.*]] ]
; CHECK-NEXT: [[ARRAYIDX106:%.*]] = getelementptr inbounds i64, i64* [[P:%.*]], i64 [[INDVARS_IV377]]
; CHECK-NEXT: store i64 1, i64* [[ARRAYIDX106]], align 8
; CHECK-NEXT: [[CMP107:%.*]] = icmp ugt i64 [[INDVARS_IV377]], 15
; CHECK-NEXT: br i1 [[CMP107]], label [[IF_END:%.*]], label [[IF_END_THREAD:%.*]]
; CHECK: if.end.thread:
; CHECK-NEXT: br label [[FOR_INC140_THREAD]]
; CHECK: if.end:
; CHECK-NEXT: store i64 2, i64* [[ARRAYIDX106]], align 8
; CHECK-NEXT: [[CMP127:%.*]] = icmp ult i64 [[INDVARS_IV377]], 48
; CHECK-NEXT: br i1 [[CMP127]], label [[FOR_INC140_THREAD]], label [[FOR_INC140]]
; CHECK: for.inc140.thread:
; CHECK-NEXT: [[INC1]] = add i64 [[INDVARS_IV377]], 1
; CHECK-NEXT: br label [[FOR_BODY98]]
; CHECK: for.inc140:
; CHECK-NEXT: [[INC2]] = add i64 [[INDVARS_IV377]], 1
; CHECK-NEXT: [[EXITCOND384_NOT:%.*]] = icmp eq i64 [[INDVARS_IV377]], 56
; CHECK-NEXT: br i1 [[EXITCOND384_NOT]], label [[FOR_INC177:%.*]], label [[FOR_BODY98]]
; CHECK: for.inc177:
; CHECK-NEXT: ret void
;
entry:
br label %for.body98
for.body98: ; preds = %for.inc140, %for.inc140.thread, %entry
%indvars.iv377 = phi i64 [ 8, %entry ], [ %inc2, %for.inc140 ], [ %inc1, %for.inc140.thread ]
%arrayidx106 = getelementptr inbounds i64, i64* %p, i64 %indvars.iv377
store i64 1, i64* %arrayidx106, align 8
%cmp107 = icmp ugt i64 %indvars.iv377, 15
br i1 %cmp107, label %if.end, label %if.end.thread
if.end.thread: ; preds = %for.body98
br label %for.inc140.thread
if.end: ; preds = %for.body98
store i64 2, i64* %arrayidx106, align 8
%cmp127 = icmp ult i64 %indvars.iv377, 48
br i1 %cmp127, label %for.inc140.thread, label %for.inc140
for.inc140.thread: ; preds = %if.end, %if.end.thread
%inc1 = add i64 %indvars.iv377, 1
br label %for.body98
for.inc140: ; preds = %if.end
%inc2 = add i64 %indvars.iv377, 1
%exitcond384.not = icmp eq i64 %indvars.iv377, 56
br i1 %exitcond384.not, label %for.inc177, label %for.body98
for.inc177: ; preds = %for.inc140
ret void
}