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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
26 lines
923 B
LLVM
26 lines
923 B
LLVM
; RUN: opt < %s -msan-check-access-address=0 -msan-track-origins=2 -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=2 -S | FileCheck %s
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target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
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target triple = "aarch64-unknown-linux-gnu"
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; Check origin handling of array types.
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define void @foo([2 x i64] %v, [2 x i64]* %p) sanitize_memory {
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entry:
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store [2 x i64] %v, [2 x i64]* %p, align 8
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ret void
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}
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; CHECK-LABEL: @foo
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; CHECK: [[PARAM:%[01-9a-z]+]] = load {{.*}} @__msan_param_tls
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; CHECK: [[ORIGIN:%[01-9a-z]+]] = load {{.*}} @__msan_param_origin_tls
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; CHECK: [[TMP1:%[01-9a-z]+]] = ptrtoint
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; CHECK: [[TMP2:%[01-9a-z]+]] = xor i64 [[TMP1]]
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; CHECK: [[TMP3:%[01-9a-z]+]] = inttoptr i64 [[TMP2]] to [2 x i64]*
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; CHECK: store [2 x i64] [[PARAM]], [2 x i64]* [[TMP3]]
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; CHECK: {{.*}} call i32 @__msan_chain_origin(i32 {{.*}}[[ORIGIN]])
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