mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-13 04:30:23 +00:00
30 lines
859 B
LLVM
30 lines
859 B
LLVM
|
; RUN: llc < %s -mtriple=i386-apple-darwin | 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: t:
|
||
|
|
; CHECK: movl $1
|
||
|
|
; CHECK: movl (%ebp), %eax
|
||
|
|
; CHECK: movl 4(%ebp), %edx
|
||
|
|
; CHECK: LBB1_1:
|
||
|
|
; CHECK-NOT: movl $1
|
||
|
|
; CHECK-NOT: movl $0
|
||
|
|
; CHECK: addl
|
||
|
|
; CHECK: adcl
|
||
|
|
; CHECK: lock
|
||
|
|
; CHECK: cmpxchg8b
|
||
|
|
; CHECK: jne
|
||
|
|
tail call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true)
|
||
|
|
%0 = tail call i64 @llvm.atomic.load.add.i64.p0i64(i64* %p, i64 1) ; <i64> [#uses=0]
|
||
|
|
tail call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true)
|
||
|
|
ret void
|
||
|
|
}
|
||
|
|
|
||
|
|
declare void @llvm.memory.barrier(i1, i1, i1, i1, i1) nounwind
|
||
|
|
|
||
|
|
declare i64 @llvm.atomic.load.add.i64.p0i64(i64* nocapture, i64) nounwind
|