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; RUN: llc < %s -march=x86-64 | FileCheck %s
; rdar://9692967
define void @t1(i64* %p, i32 %b) nounwind {
entry:
%p.addr = alloca i64*, align 8
store i64* %p, i64** %p.addr, align 8
%tmp = load i64** %p.addr, align 8
call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true)
; CHECK: t1:
; CHECK: movl $2147483648, %eax
; CHECK: lock
; CHECK-NEXT: orq %r{{.*}}, (%r{{.*}})
%0 = call i64 @llvm.atomic.load.or.i64.p0i64(i64* %tmp, i64 2147483648)
call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true)
ret void
}
define void @t2(i64* %p, i32 %b) nounwind {
entry:
%p.addr = alloca i64*, align 8
store i64* %p, i64** %p.addr, align 8
%tmp = load i64** %p.addr, align 8
call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true)
; CHECK: t2:
; CHECK-NOT: movl
; CHECK: lock
; CHECK-NEXT: orq $2147483644, (%r{{.*}})
%0 = call i64 @llvm.atomic.load.or.i64.p0i64(i64* %tmp, i64 2147483644)
call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true)
ret void
}
declare i64 @llvm.atomic.load.or.i64.p0i64(i64* nocapture, i64) nounwind
declare void @llvm.memory.barrier(i1, i1, i1, i1, i1) nounwind
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