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https://github.com/c64scene-ar/llvm-6502.git
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ca396e391e
The syntax for "cmpxchg" should now look something like: cmpxchg i32* %addr, i32 42, i32 3 acquire monotonic where the second ordering argument gives the required semantics in the case that no exchange takes place. It should be no stronger than the first ordering constraint and cannot be either "release" or "acq_rel" (since no store will have taken place). rdar://problem/15996804 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203559 91177308-0d34-0410-b5e6-96231b3b80d8
37 lines
1.0 KiB
LLVM
37 lines
1.0 KiB
LLVM
; RUN: opt < %s -asan -S | FileCheck %s
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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"
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target triple = "x86_64-unknown-linux-gnu"
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define i32 @read_4_bytes(i32* %a) sanitize_address {
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entry:
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%tmp1 = load i32* %a, align 4
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ret i32 %tmp1
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}
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; CHECK: @read_4_bytes
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; CHECK-NOT: ret
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; CHECK: lshr {{.*}} 3
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; Check for ASAN's Offset for 64-bit (7fff8000)
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; CHECK-NEXT: add{{.*}}2147450880
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; CHECK: ret
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define void @example_atomicrmw(i64* %ptr) nounwind uwtable sanitize_address {
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entry:
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%0 = atomicrmw add i64* %ptr, i64 1 seq_cst
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ret void
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}
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; CHECK: @example_atomicrmw
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; CHECK: lshr {{.*}} 3
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; CHECK: atomicrmw
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; CHECK: ret
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define void @example_cmpxchg(i64* %ptr, i64 %compare_to, i64 %new_value) nounwind uwtable sanitize_address {
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entry:
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%0 = cmpxchg i64* %ptr, i64 %compare_to, i64 %new_value seq_cst seq_cst
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ret void
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}
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; CHECK: @example_cmpxchg
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; CHECK: lshr {{.*}} 3
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; CHECK: cmpxchg
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; CHECK: ret
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