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llvm-mirror/test/CodeGen/X86/2008-08-19-SubAndFetch.ll
2011-09-26 23:15:09 +00:00

13 lines
231 B
LLVM

; RUN: llc < %s -march=x86-64 | FileCheck %s
@var = external global i64 ; <i64*> [#uses=1]
define i32 @main() nounwind {
entry:
; CHECK: main:
; CHECK: lock
; CHECK: decq
atomicrmw sub i64* @var, i64 1 monotonic
unreachable
}