fence.ll
804 Bytes
; RUN: opt -S -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(i32* ()*) {
entry:
%1 = call i32* %0() #0
fence syncscope("singlethread") seq_cst
%2 = load i32, i32* %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 i32* %0()
; CHECK: fence syncscope("singlethread") seq_cst
; CHECK: load i32, i32* %[[call]], align 4
; CHECK: fence syncscope("singlethread") seq_cst
attributes #0 = { nounwind readnone }