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https://github.com/c64scene-ar/llvm-6502.git
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839656120b
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134308 91177308-0d34-0410-b5e6-96231b3b80d8
37 lines
1.2 KiB
LLVM
37 lines
1.2 KiB
LLVM
; RUN: llc < %s -march=x86-64 | FileCheck %s
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; rdar://9692967
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define void @t1(i64* %p, i32 %b) nounwind {
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entry:
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%p.addr = alloca i64*, align 8
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store i64* %p, i64** %p.addr, align 8
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%tmp = load i64** %p.addr, align 8
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call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true)
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; CHECK: t1:
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; CHECK: movl $2147483648, %eax
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; CHECK: lock
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; CHECK-NEXT: orq %r{{.*}}, (%r{{.*}})
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%0 = call i64 @llvm.atomic.load.or.i64.p0i64(i64* %tmp, i64 2147483648)
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call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true)
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ret void
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}
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define void @t2(i64* %p, i32 %b) nounwind {
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entry:
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%p.addr = alloca i64*, align 8
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store i64* %p, i64** %p.addr, align 8
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%tmp = load i64** %p.addr, align 8
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call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true)
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; CHECK: t2:
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; CHECK-NOT: movl
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; CHECK: lock
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; CHECK-NEXT: orq $2147483644, (%r{{.*}})
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%0 = call i64 @llvm.atomic.load.or.i64.p0i64(i64* %tmp, i64 2147483644)
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call void @llvm.memory.barrier(i1 true, i1 true, i1 true, i1 true, i1 true)
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ret void
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}
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declare i64 @llvm.atomic.load.or.i64.p0i64(i64* nocapture, i64) nounwind
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declare void @llvm.memory.barrier(i1, i1, i1, i1, i1) nounwind
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