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llvm-mirror/test/CodeGen/X86/lock-inst-encoding.ll
Chris Lattner 9ffcc9253f relax this test to just check that the lock prefix is encoded properly,
and to not rely on the register allocator's arbitrary operand choices.

llvm-svn: 129690
2011-04-18 06:15:35 +00:00

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878 B
LLVM

; RUN: llc -O0 --show-mc-encoding < %s | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
target triple = "x86_64-apple-darwin10.0.0"
; CHECK: f0:
; CHECK: addq %{{.*}}, ({{.*}}){{.*}}encoding: [0xf0,
; CHECK: ret
define void @f0(i64* %a0) nounwind {
%t0 = and i64 1, 1
call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true) nounwind
%1 = call i64 @llvm.atomic.load.add.i64.p0i64(i64* %a0, i64 %t0) nounwind
call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true) nounwind
ret void
}
declare void @llvm.memory.barrier(i1, i1, i1, i1, i1) nounwind
declare i32 @llvm.atomic.load.and.i32.p0i32(i32* nocapture, i32) nounwind
declare i64 @llvm.atomic.load.add.i64.p0i64(i64* nocapture, i64) nounwind