File: 2010-01-08-Atomic64Bug.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 (21 lines) | stat: -rw-r--r-- 559 bytes parent folder | download | duplicates (20) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
; RUN: llc < %s -mtriple=i386-apple-darwin -mcpu=corei7 | FileCheck %s
; rdar://r7512579

; PHI defs in the atomic loop should be used by the add / adc
; instructions. They should not be dead.

define void @t(i64* nocapture %p) nounwind ssp {
entry:
; CHECK-LABEL: t:
; CHECK: movl ([[REG:%[a-z]+]]), %eax
; CHECK: movl 4([[REG]]), %edx
; CHECK: LBB0_1:
; CHECK: movl %eax, %ebx
; CHECK: addl $1, %ebx
; CHECK: movl %edx, %ecx
; CHECK: adcl $0, %ecx
; CHECK: lock cmpxchg8b ([[REG]])
; CHECK-NEXT: jne
  %0 = atomicrmw add i64* %p, i64 1 seq_cst
  ret void
}