File: select-cmpxchg.ll

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (39 lines) | stat: -rw-r--r-- 1,505 bytes parent folder | download | duplicates (14)
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
; RUN: opt < %s -instcombine -S | FileCheck %s

define i64 @cmpxchg_0(i64* %ptr, i64 %compare, i64 %new_value) {
; CHECK-LABEL: @cmpxchg_0(
; CHECK-NEXT:    %tmp0 = cmpxchg i64* %ptr, i64 %compare, i64 %new_value seq_cst seq_cst
; CHECK-NEXT:    %tmp2 = extractvalue { i64, i1 } %tmp0, 0
; CHECK-NEXT:    ret i64 %tmp2
;
  %tmp0 = cmpxchg i64* %ptr, i64 %compare, i64 %new_value seq_cst seq_cst
  %tmp1 = extractvalue { i64, i1 } %tmp0, 1
  %tmp2 = extractvalue { i64, i1 } %tmp0, 0
  %tmp3 = select i1 %tmp1, i64 %compare, i64 %tmp2
  ret i64 %tmp3
}

define i64 @cmpxchg_1(i64* %ptr, i64 %compare, i64 %new_value) {
; CHECK-LABEL: @cmpxchg_1(
; CHECK-NEXT:    %tmp0 = cmpxchg i64* %ptr, i64 %compare, i64 %new_value seq_cst seq_cst
; CHECK-NEXT:    ret i64 %compare
;
  %tmp0 = cmpxchg i64* %ptr, i64 %compare, i64 %new_value seq_cst seq_cst
  %tmp1 = extractvalue { i64, i1 } %tmp0, 1
  %tmp2 = extractvalue { i64, i1 } %tmp0, 0
  %tmp3 = select i1 %tmp1, i64 %tmp2, i64 %compare
  ret i64 %tmp3
}

define i64 @cmpxchg_2(i64* %ptr, i64 %compare, i64 %new_value) {
; CHECK-LABEL: @cmpxchg_2(
; CHECK-NEXT:    %tmp0 = cmpxchg i64* %ptr, i64 %compare, i64 %new_value acq_rel monotonic
; CHECK-NEXT:    ret i64 %compare
;
  %tmp0 = cmpxchg i64* %ptr, i64 %compare, i64 %new_value acq_rel monotonic
  %tmp1 = extractvalue { i64, i1 } %tmp0, 1
  %tmp2 = extractvalue { i64, i1 } %tmp0, 0
  %tmp3 = select i1 %tmp1, i64 %compare, i64 %tmp2
  %tmp4 = select i1 %tmp1, i64 %tmp3, i64 %compare
  ret i64 %tmp4
}