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65df098609
Summary: Keeping msan a function pass requires replacing the module level initialization: That means, don't define a ctor function which calls __msan_init, instead just declare the init function at the first access, and add that to the global ctors list. Changes: - Pull the actual sanitizer and the wrapper pass apart. - Add a newpm msan pass. The function pass inserts calls to runtime library functions, for which it inserts declarations as necessary. - Update tests. Caveats: - There is one test that I dropped, because it specifically tested the definition of the ctor. Reviewers: chandlerc, fedor.sergeev, leonardchan, vitalybuka Subscribers: sdardis, nemanjai, javed.absar, hiraditya, kbarton, bollu, atanasyan, jsji Differential Revision: https://reviews.llvm.org/D55647 llvm-svn: 350305
36 lines
1.3 KiB
LLVM
36 lines
1.3 KiB
LLVM
; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=1 -S \
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; RUN: -passes=msan 2>&1 | FileCheck %s
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; RUN: opt < %s -msan -msan-check-access-address=0 -msan-track-origins=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 that result origin is directy propagated from the argument,
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; and is not affected by all the literal undef operands.
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; https://github.com/google/sanitizers/issues/559
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define <4 x i32> @Shuffle(<4 x i32> %x) nounwind uwtable sanitize_memory {
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entry:
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%y = shufflevector <4 x i32> %x, <4 x i32> undef, <4 x i32> <i32 1, i32 undef, i32 undef, i32 undef>
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ret <4 x i32> %y
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}
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; CHECK-LABEL: @Shuffle(
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; CHECK: [[A:%.*]] = load i32, i32* {{.*}}@__msan_param_origin_tls,
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; CHECK: store i32 [[A]], i32* @__msan_retval_origin_tls
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; CHECK: ret <4 x i32>
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; Regression test for origin propagation in "select i1, float, float".
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; https://github.com/google/sanitizers/issues/581
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define float @SelectFloat(i1 %b, float %x, float %y) nounwind uwtable sanitize_memory {
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entry:
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%z = select i1 %b, float %x, float %y
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ret float %z
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}
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; CHECK-LABEL: @SelectFloat(
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; CHECK-NOT: select {{.*}} i32 0, i32 0
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; CHECK: ret float
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