56 lines
1.6 KiB
LLVM
56 lines
1.6 KiB
LLVM
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; RUN: opt < %s -msan-check-access-address=1 -S -passes=msan 2>&1 | FileCheck \
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; RUN: %s
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; RUN: opt < %s -msan -msan-check-access-address=1 -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-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Test byval argument shadow alignment
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define <2 x i64> @ByValArgumentShadowLargeAlignment(<2 x i64>* byval(<2 x i64>) %p) sanitize_memory {
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entry:
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%x = load <2 x i64>, <2 x i64>* %p
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ret <2 x i64> %x
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}
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; CHECK-LABEL: @ByValArgumentShadowLargeAlignment
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 {{.*}}, i8* align 8 {{.*}}, i64 16, i1 false)
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; CHECK: ret <2 x i64>
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define i16 @ByValArgumentShadowSmallAlignment(i16* byval(i16) %p) sanitize_memory {
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entry:
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%x = load i16, i16* %p
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ret i16 %x
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}
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; CHECK-LABEL: @ByValArgumentShadowSmallAlignment
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; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 2 {{.*}}, i8* align 2 {{.*}}, i64 2, i1 false)
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; CHECK: ret i16
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; Check instrumentation of stores. The check must precede the shadow store.
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define void @Store(i32* nocapture %p, i32 %x) nounwind uwtable sanitize_memory {
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entry:
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store i32 %x, i32* %p, align 4
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ret void
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}
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; CHECK-LABEL: @Store
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; CHECK: load {{.*}} @__msan_param_tls
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; Shadow calculations must happen after the check.
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; CHECK-NOT: xor
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; CHECK: icmp
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; CHECK: br i1
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; CHECK: {{^[0-9]+}}:
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; CHECK: call void @__msan_warning_with_origin_noreturn
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; CHECK: {{^[0-9]+}}:
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; CHECK: xor
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; CHECK: store
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; CHECK: store i32 %x
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; CHECK: ret void
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