File: atomic-1.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 (27 lines) | stat: -rw-r--r-- 775 bytes parent folder | download | duplicates (11) 
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
 
; RUN: llc -verify-machineinstrs < %s -mtriple=powerpc-unknown-linux-gnu |  FileCheck %s

define i32 @exchange_and_add(i32* %mem, i32 %val) nounwind {
; CHECK-LABEL: exchange_and_add:
; CHECK: lwarx {{[0-9]+}}, 0, {{[0-9]+}}
  %tmp = atomicrmw add i32* %mem, i32 %val monotonic
; CHECK: stwcx. {{[0-9]+}}, 0, {{[0-9]+}}
  ret i32 %tmp
}

define i32 @exchange_and_cmp(i32* %mem) nounwind {
; CHECK-LABEL: exchange_and_cmp:
; CHECK: lwarx
  %tmppair = cmpxchg i32* %mem, i32 0, i32 1 monotonic monotonic
  %tmp = extractvalue { i32, i1 } %tmppair, 0
; CHECK: stwcx.
; CHECK: stwcx.
  ret i32 %tmp
}

define i32 @exchange(i32* %mem, i32 %val) nounwind {
; CHECK-LABEL: exchange:
; CHECK: lwarx
  %tmp = atomicrmw xchg i32* %mem, i32 1 monotonic
; CHECK: stwcx.
  ret i32 %tmp
}