int_sideeffect.ll
318 Bytes
; RUN: opt -S < %s -instcombine | FileCheck %s
declare void @llvm.sideeffect()
; Store-to-load forwarding across a @llvm.sideeffect.
; CHECK-LABEL: s2l
; CHECK-NOT: load
define float @s2l(float* %p) {
store float 0.0, float* %p
call void @llvm.sideeffect()
%t = load float, float* %p
ret float %t
}