llvm/test/Transforms/IndVarSimplify/deterministic-sign.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt "-passes=loop-rotate,indvars" -S < %s | FileCheck %s
; RUN: opt "-passes=loop-rotate" < %s | opt "-passes=indvars" -S - | FileCheck %s

target datalayout = "e-m:e-i8:8:32-i16:16:32-i64:64-i128:128-n32:64-S128"
target triple = "aarch64-unknown-linux-gnu"

define dso_local float @foo(ptr noalias %dst, ptr %src, i32 %offset, i32 %N) {
; CHECK-LABEL: @foo(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[CMP1:%.*]] = icmp slt i32 1, [[N:%.*]]
; CHECK-NEXT:    br i1 [[CMP1]], label [[FOR_BODY_LR_PH:%.*]], label [[FOR_COND_CLEANUP:%.*]]
; CHECK:       for.body.lr.ph:
; CHECK-NEXT:    [[TMP0:%.*]] = sext i32 [[OFFSET:%.*]] to i64
; CHECK-NEXT:    [[WIDE_TRIP_COUNT:%.*]] = zext i32 [[N]] to i64
; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
; CHECK:       for.cond.for.cond.cleanup_crit_edge:
; CHECK-NEXT:    br label [[FOR_COND_CLEANUP]]
; CHECK:       for.cond.cleanup:
; CHECK-NEXT:    ret float undef
; CHECK:       for.body:
; CHECK-NEXT:    [[INDVARS_IV:%.*]] = phi i64 [ 1, [[FOR_BODY_LR_PH]] ], [ [[INDVARS_IV_NEXT:%.*]], [[FOR_BODY]] ]
; CHECK-NEXT:    [[TMP1:%.*]] = add nsw i64 [[INDVARS_IV]], [[TMP0]]
; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds float, ptr [[SRC:%.*]], i64 [[TMP1]]
; CHECK-NEXT:    [[TMP2:%.*]] = load float, ptr [[ARRAYIDX]], align 4
; CHECK-NEXT:    [[TMP3:%.*]] = add nsw i64 [[TMP1]], 1
; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds float, ptr [[SRC]], i64 [[TMP3]]
; CHECK-NEXT:    [[TMP4:%.*]] = load float, ptr [[ARRAYIDX3]], align 4
; CHECK-NEXT:    [[ADD4:%.*]] = fadd fast float [[TMP2]], [[TMP4]]
; CHECK-NEXT:    [[ARRAYIDX6:%.*]] = getelementptr inbounds float, ptr [[DST:%.*]], i64 [[INDVARS_IV]]
; CHECK-NEXT:    store float [[ADD4]], ptr [[ARRAYIDX6]], align 4
; CHECK-NEXT:    [[INDVARS_IV_NEXT]] = add nuw nsw i64 [[INDVARS_IV]], 1
; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp ne i64 [[INDVARS_IV_NEXT]], [[WIDE_TRIP_COUNT]]
; CHECK-NEXT:    br i1 [[EXITCOND]], label [[FOR_BODY]], label [[FOR_COND_FOR_COND_CLEANUP_CRIT_EDGE:%.*]], !llvm.loop [[LOOP0:![0-9]+]]
;
entry:
  br label %for.cond

for.cond:                                         ; preds = %for.body, %entry
  %i.0 = phi i32 [ 1, %entry ], [ %inc, %for.body ]
  %cmp = icmp slt i32 %i.0, %N
  br i1 %cmp, label %for.body, label %for.cond.cleanup

for.cond.cleanup:                                 ; preds = %for.cond
  ret float undef

for.body:                                         ; preds = %for.cond
  %add = add nsw i32 %i.0, %offset
  %idxprom = sext i32 %add to i64
  %arrayidx = getelementptr inbounds float, ptr %src, i64 %idxprom
  %0 = load float, ptr %arrayidx, align 4
  %add1 = add nsw i32 %add, 1
  %idxprom2 = sext i32 %add1 to i64
  %arrayidx3 = getelementptr inbounds float, ptr %src, i64 %idxprom2
  %1 = load float, ptr %arrayidx3, align 4
  %add4 = fadd fast float %0, %1
  %idxprom5 = zext i32 %i.0 to i64
  %arrayidx6 = getelementptr inbounds float, ptr %dst, i64 %idxprom5
  store float %add4, ptr %arrayidx6, align 4
  %inc = add nuw nsw i32 %i.0, 1
  br label %for.cond, !llvm.loop !1
}

!1 = distinct !{!1, !2}
!2 = !{!"llvm.loop.mustprogress"}