llvm-project/llvm/test/Transforms/DeadStoreElimination/MSSA/int_sideeffect.ll

16 lines
341 B
LLVM

; RUN: opt -S < %s -dse -enable-dse-memoryssa | FileCheck %s
declare void @llvm.sideeffect()
; Dead store elimination across a @llvm.sideeffect.
; CHECK-LABEL: dse
; CHECK: store
; CHECK-NOT: store
define void @dse(float* %p) {
store float 0.0, float* %p
call void @llvm.sideeffect()
store float 0.0, float* %p
ret void
}