llvm-6502/test/CodeGen/X86/2008-08-19-SubAndFetch.ll
Bill Wendling 108ecf3975 Add support for the __sync_sub_and_fetch atomics and friends for X86. The code
was already present, but not hooked up to anything.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@55018 91177308-0d34-0410-b5e6-96231b3b80d8
2008-08-19 23:09:18 +00:00

12 lines
306 B
LLVM

; RUN: llvm-as < %s | llc -march=x86-64 | grep xadd
@var = external global i64 ; <i64*> [#uses=1]
define i32 @main() nounwind {
entry:
tail call i64 @llvm.atomic.load.sub.i64.p0i64( i64* @var, i64 1 ) ; <i64>:0 [#uses=0]
unreachable
}
declare i64 @llvm.atomic.load.sub.i64.p0i64(i64*, i64) nounwind