You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
33 lines
789 B
33 lines
789 B
4 months ago
|
; RUN: opt -S -basicaa -licm < %s | FileCheck %s
|
||
|
|
|
||
|
|
target datalayout = "e-m:x-p:32:32-i64:64-f80:32-n8:16:32-a:0:32-S32"
|
||
|
|
target triple = "i686-pc-windows-msvc18.0.0"
|
||
|
|
|
||
|
|
@v = common global i32 zeroinitializer, align 4
|
||
|
|
|
||
|
|
; Make sure the store to v is not sunk past the memset
|
||
|
|
; CHECK-LABEL: @main
|
||
|
|
; CHECK: for.body:
|
||
|
|
; CHECK-NEXT: store i32 1, i32* @v
|
||
|
|
; CHECK-NEXT: tail call void @llvm.memset
|
||
|
|
; CHECK: end:
|
||
|
|
; CHECK-NEXT: ret i32 0
|
||
|
|
|
||
|
|
define i32 @main(i1 %k) {
|
||
|
|
entry:
|
||
|
|
br label %for.body
|
||
|
|
|
||
|
|
for.body:
|
||
|
|
store i32 1, i32* @v, align 4
|
||
|
|
tail call void @llvm.memset.p0i8.i32(i8* bitcast (i32* @v to i8*), i8 0, i32 4, i32 4, i1 false)
|
||
|
|
br label %for.latch
|
||
|
|
|
||
|
|
for.latch:
|
||
|
|
br i1 %k, label %for.body, label %end
|
||
|
|
|
||
|
|
end:
|
||
|
|
ret i32 0
|
||
|
|
}
|
||
|
|
|
||
|
|
declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1)
|