File: consecutive-fences.ll

package info (click to toggle)
llvm-toolchain-6.0 1:6.0-1~bpo9+1
  • links: PTS, VCS
  • area: main
  • in suites: stretch-backports
  • size: 594,652 kB
  • sloc: cpp: 3,044,500; ansic: 595,051; asm: 271,890; python: 128,923; objc: 106,554; sh: 21,854; lisp: 10,191; pascal: 6,094; ml: 5,544; perl: 5,265; makefile: 2,214; cs: 2,027; xml: 686; php: 212; csh: 117
file content (47 lines) | stat: -rw-r--r-- 1,037 bytes parent folder | download | duplicates (3)
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
; RUN: opt -instcombine -S %s | FileCheck %s

; Make sure we collapse the fences in this case

; CHECK-LABEL: define void @tinkywinky
; CHECK-NEXT:   fence seq_cst
; CHECK-NEXT:   fence syncscope("singlethread") acquire
; CHECK-NEXT:   ret void
; CHECK-NEXT: }

define void @tinkywinky() {
  fence seq_cst
  fence seq_cst
  fence seq_cst
  fence syncscope("singlethread") acquire
  fence syncscope("singlethread") acquire
  fence syncscope("singlethread") acquire
  ret void
}

; CHECK-LABEL: define void @dipsy
; CHECK-NEXT:   fence seq_cst
; CHECK-NEXT:   fence syncscope("singlethread") seq_cst
; CHECK-NEXT:   ret void
; CHECK-NEXT: }

define void @dipsy() {
  fence seq_cst
  fence syncscope("singlethread") seq_cst
  ret void
}

; CHECK-LABEL: define void @patatino
; CHECK-NEXT:   fence acquire
; CHECK-NEXT:   fence seq_cst
; CHECK-NEXT:   fence acquire
; CHECK-NEXT:   fence seq_cst
; CHECK-NEXT:   ret void
; CHECK-NEXT: }

define void @patatino() {
  fence acquire
  fence seq_cst
  fence acquire
  fence seq_cst
  ret void
}