File: pr26843.ll

package info (click to toggle)
swiftlang 6.1.3-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 2,791,604 kB
  • sloc: cpp: 9,901,740; ansic: 2,201,431; asm: 1,091,827; python: 308,252; objc: 82,166; f90: 80,126; lisp: 38,358; pascal: 25,559; sh: 20,429; ml: 5,058; perl: 4,745; makefile: 4,484; awk: 3,535; javascript: 3,018; xml: 918; fortran: 664; cs: 573; ruby: 396
file content (32 lines) | stat: -rw-r--r-- 751 bytes parent folder | download | duplicates (16) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
 
; RUN: opt -S -passes=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, ptr @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, ptr @v, align 4
  tail call void @llvm.memset.p0.i32(ptr align 4 @v, i8 0, 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.p0.i32(ptr nocapture, i8, i32, i1)