1; RUN: opt -S -passes=licm < %s | FileCheck %s 2 3target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32" 4target triple = "i686-pc-windows-msvc18.0.0" 5 6@v = common global i32 zeroinitializer, align 4 7 8; Make sure the store to v is not sunk past the memset 9; CHECK-LABEL: @main 10; CHECK: for.body: 11; CHECK-NEXT: store i32 1, ptr @v 12; CHECK-NEXT: tail call void @llvm.memset 13; CHECK: end: 14; CHECK-NEXT: ret i32 0 15 16define i32 @main(i1 %k) { 17entry: 18 br label %for.body 19 20for.body: 21 store i32 1, ptr @v, align 4 22 tail call void @llvm.memset.p0.i32(ptr align 4 @v, i8 0, i32 4, i1 false) 23 br label %for.latch 24 25for.latch: 26 br i1 %k, label %for.body, label %end 27 28end: 29 ret i32 0 30} 31 32declare void @llvm.memset.p0.i32(ptr nocapture, i8, i32, i1) 33