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https://github.com/RPCS3/llvm-mirror.git
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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
120 lines
3.3 KiB
LLVM
120 lines
3.3 KiB
LLVM
; RUN: opt < %s -msan-check-access-address=0 -S -passes=msan 2>&1 | FileCheck \
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; RUN: %s
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; RUN: opt < %s -msan -msan-check-access-address=0 -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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; Check instrumentation mul when one of the operands is a constant.
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define i64 @MulConst(i64 %x) sanitize_memory {
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entry:
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%y = mul i64 %x, 42949672960000
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ret i64 %y
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}
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; 42949672960000 = 2**32 * 10000
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; 36 trailing zero bits
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; 68719476736 = 2**36
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; CHECK-LABEL: @MulConst(
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; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls
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; CHECK: [[B:%.*]] = mul i64 [[A]], 68719476736
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; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls
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define i64 @MulZero(i64 %x) sanitize_memory {
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entry:
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%y = mul i64 %x, 0
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ret i64 %y
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}
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; CHECK-LABEL: @MulZero(
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; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls
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; CHECK: [[B:%.*]] = mul i64 [[A]], 0{{$}}
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; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls
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define i64 @MulNeg(i64 %x) sanitize_memory {
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entry:
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%y = mul i64 %x, -16
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ret i64 %y
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}
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; CHECK-LABEL: @MulNeg(
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; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls
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; CHECK: [[B:%.*]] = mul i64 [[A]], 16
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; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls
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define i64 @MulNeg2(i64 %x) sanitize_memory {
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entry:
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%y = mul i64 %x, -48
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ret i64 %y
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}
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; CHECK-LABEL: @MulNeg2(
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; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls
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; CHECK: [[B:%.*]] = mul i64 [[A]], 16
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; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls
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define i64 @MulOdd(i64 %x) sanitize_memory {
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entry:
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%y = mul i64 %x, 12345
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ret i64 %y
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}
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; CHECK-LABEL: @MulOdd(
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; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls
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; CHECK: [[B:%.*]] = mul i64 [[A]], 1
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; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls
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define i64 @MulLarge(i64 %x) sanitize_memory {
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entry:
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%y = mul i64 %x, -9223372036854775808
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ret i64 %y
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}
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; -9223372036854775808 = 0x7000000000000000
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; CHECK-LABEL: @MulLarge(
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; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls
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; CHECK: [[B:%.*]] = mul i64 [[A]], -9223372036854775808
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; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls
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define <4 x i32> @MulVectorConst(<4 x i32> %x) sanitize_memory {
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entry:
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%y = mul <4 x i32> %x, <i32 3072, i32 0, i32 -16, i32 -48>
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ret <4 x i32> %y
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}
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; CHECK-LABEL: @MulVectorConst(
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; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls
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; CHECK: [[B:%.*]] = mul <4 x i32> [[A]], <i32 1024, i32 0, i32 16, i32 16>
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; CHECK: store <4 x i32> [[B]], <4 x i32>* {{.*}} @__msan_retval_tls
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; The constant in multiplication does not have to be a literal integer constant.
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@X = linkonce_odr global i8* null
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define i64 @MulNonIntegerConst(i64 %a) sanitize_memory {
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%mul = mul i64 %a, ptrtoint (i8** @X to i64)
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ret i64 %mul
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}
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; CHECK-LABEL: @MulNonIntegerConst(
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; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls
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; CHECK: [[B:%.*]] = mul i64 [[A]], 1
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; CHECK: store i64 [[B]], {{.*}}@__msan_retval_tls
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define <2 x i64> @MulNonIntegerVectorConst(<2 x i64> %a) sanitize_memory {
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%mul = mul <2 x i64> %a, <i64 3072, i64 ptrtoint (i8** @X to i64)>
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ret <2 x i64> %mul
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}
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; CHECK-LABEL: @MulNonIntegerVectorConst(
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; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls
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; CHECK: [[B:%.*]] = mul <2 x i64> [[A]], <i64 1024, i64 1>
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; CHECK: store <2 x i64> [[B]], {{.*}}@__msan_retval_tls
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