llvm/test/Transforms/PhaseOrdering/pr36760.ll

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -passes='default<O2>' -S < %s | FileCheck %s

define i64 @PR36760(i64 %a) {
; CHECK-LABEL: @PR36760(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.smax.i64(i64 [[A:%.*]], i64 0)
; CHECK-NEXT:    ret i64 [[TMP0]]
;
entry:
  %retval = alloca i64, align 8
  %a.addr = alloca i64, align 8
  store i64 %a, ptr %a.addr, align 8
  %0 = load i64, ptr %a.addr, align 8
  %cmp = icmp slt i64 %0, 0
  br i1 %cmp, label %if.then, label %if.end

if.then:
  store i64 0, ptr %retval, align 8
  br label %return

if.end:
  %1 = load i64, ptr %a.addr, align 8
  %shr = ashr i64 %1, 63
  %2 = load i64, ptr %a.addr, align 8
  %xor = xor i64 %shr, %2
  store i64 %xor, ptr %retval, align 8
  br label %return

return:
  %3 = load i64, ptr %retval, align 8
  ret i64 %3
}

define i64 @PR36760_2(i64 %a) #0 {
; CHECK-LABEL: @PR36760_2(
; CHECK-NEXT:  entry:
; CHECK-NEXT:    [[TMP0:%.*]] = tail call i64 @llvm.smin.i64(i64 [[A:%.*]], i64 -1)
; CHECK-NEXT:    [[TMP1:%.*]] = xor i64 [[TMP0]], -1
; CHECK-NEXT:    ret i64 [[TMP1]]
;
entry:
  %retval = alloca i64, align 8
  %a.addr = alloca i64, align 8
  store i64 %a, ptr %a.addr, align 8
  %0 = load i64, ptr %a.addr, align 8
  %cmp = icmp sge i64 %0, 0
  br i1 %cmp, label %if.then, label %if.end

if.then:                                          ; preds = %entry
  store i64 0, ptr %retval, align 8
  br label %return

if.end:                                           ; preds = %entry
  %1 = load i64, ptr %a.addr, align 8
  %shr = ashr i64 %1, 63
  %2 = load i64, ptr %a.addr, align 8
  %xor = xor i64 %shr, %2
  store i64 %xor, ptr %retval, align 8
  br label %return

return:                                           ; preds = %if.end, %if.then
  %3 = load i64, ptr %retval, align 8
  ret i64 %3
}