File: pr30216.ll

package info (click to toggle)
llvm-toolchain-16 1%3A16.0.6-15~deb11u2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 1,634,820 kB
  • sloc: cpp: 6,179,261; ansic: 1,216,205; asm: 741,319; python: 196,614; objc: 75,325; f90: 49,640; lisp: 32,396; pascal: 12,286; sh: 9,394; perl: 7,442; ml: 5,494; awk: 3,523; makefile: 2,723; javascript: 1,206; xml: 886; fortran: 581; cs: 573
file content (52 lines) | stat: -rw-r--r-- 932 bytes parent folder | download | duplicates (2) 
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
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
 
; RUN: opt -S -passes=gvn-hoist < %s | FileCheck %s

; Make sure the two stores @B do not get hoisted past the load @B.

; CHECK-LABEL: define ptr @Foo
; CHECK: store
; CHECK: store
; CHECK: load
; CHECK: store

@A = external global i8
@B = external global ptr

define ptr @Foo() {
  store i8 0, ptr @A
  br i1 undef, label %if.then, label %if.else

if.then:
  store ptr null, ptr @B
  ret ptr null

if.else:
  %1 = load ptr, ptr @B
  store ptr null, ptr @B
  ret ptr %1
}

; Make sure the two stores @B do not get hoisted past the store @GlobalVar.

; CHECK-LABEL: define ptr @Fun
; CHECK: store
; CHECK: store
; CHECK: store
; CHECK: store
; CHECK: load

@GlobalVar = internal global i8 0

define ptr @Fun() {
  store i8 0, ptr @A
  br i1 undef, label %if.then, label %if.else

if.then:
  store ptr null, ptr @B
  ret ptr null

if.else:
  store i8 0, ptr @GlobalVar
  store ptr null, ptr @B
  %1 = load ptr, ptr @B
  ret ptr %1
}