File: fence.ll

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llvm-toolchain-17 1%3A17.0.6-22
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; RUN: opt -S -passes=sink < %s | FileCheck %s
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

define void @test1(ptr) {
entry:
  %1 = call ptr %0() #0
  fence syncscope("singlethread") seq_cst
  %2 = load i32, ptr %1, align 4
  fence syncscope("singlethread") seq_cst
  %3 = icmp eq i32 %2, 0
  br i1 %3, label %fail, label %pass

fail:                                             ; preds = %top
  br label %pass

pass:                                             ; preds = %fail, %top
  ret void
}

; CHECK-LABEL: @test1(
; CHECK:  %[[call:.*]] = call ptr %0()
; CHECK:  fence syncscope("singlethread") seq_cst
; CHECK:  load i32, ptr %[[call]], align 4
; CHECK:  fence syncscope("singlethread") seq_cst


attributes #0 = { nounwind readnone }