[NewPM] Port Msan
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
2019-01-03 21:42:44 +08:00
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; RUN: opt < %s -msan-check-access-address=0 -S -passes=msan 2>&1 | FileCheck \
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; RUN: %s
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2014-06-02 20:31:44 +08:00
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; RUN: opt < %s -msan -msan-check-access-address=0 -S | FileCheck %s
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2017-06-04 16:21:58 +08:00
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; REQUIRES: x86-registered-target
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2014-06-02 20:31:44 +08:00
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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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declare <8 x i16> @llvm.x86.sse2.packssdw.128(<4 x i32>, <4 x i32>) nounwind readnone
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declare <32 x i8> @llvm.x86.avx2.packuswb(<16 x i16> %a, <16 x i16> %b) nounwind readnone
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2014-06-09 16:40:16 +08:00
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declare x86_mmx @llvm.x86.mmx.packuswb(x86_mmx, x86_mmx) nounwind readnone
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2014-06-02 20:31:44 +08:00
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define <8 x i16> @Test_packssdw_128(<4 x i32> %a, <4 x i32> %b) sanitize_memory {
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entry:
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%c = tail call <8 x i16> @llvm.x86.sse2.packssdw.128(<4 x i32> %a, <4 x i32> %b) nounwind
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ret <8 x i16> %c
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}
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; CHECK-LABEL: @Test_packssdw_128(
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; CHECK-DAG: icmp ne <4 x i32> {{.*}}, zeroinitializer
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; CHECK-DAG: sext <4 x i1> {{.*}} to <4 x i32>
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; CHECK-DAG: icmp ne <4 x i32> {{.*}}, zeroinitializer
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; CHECK-DAG: sext <4 x i1> {{.*}} to <4 x i32>
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; CHECK-DAG: call <8 x i16> @llvm.x86.sse2.packssdw.128(
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; CHECK-DAG: call <8 x i16> @llvm.x86.sse2.packssdw.128(
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; CHECK: ret <8 x i16>
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define <32 x i8> @Test_avx_packuswb(<16 x i16> %a, <16 x i16> %b) sanitize_memory {
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entry:
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%c = tail call <32 x i8> @llvm.x86.avx2.packuswb(<16 x i16> %a, <16 x i16> %b) nounwind
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ret <32 x i8> %c
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}
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; CHECK-LABEL: @Test_avx_packuswb(
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; CHECK-DAG: icmp ne <16 x i16> {{.*}}, zeroinitializer
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; CHECK-DAG: sext <16 x i1> {{.*}} to <16 x i16>
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; CHECK-DAG: icmp ne <16 x i16> {{.*}}, zeroinitializer
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; CHECK-DAG: sext <16 x i1> {{.*}} to <16 x i16>
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2014-06-09 16:40:16 +08:00
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; CHECK-DAG: call <32 x i8> @llvm.x86.avx2.packsswb(
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2014-06-02 20:31:44 +08:00
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; CHECK-DAG: call <32 x i8> @llvm.x86.avx2.packuswb(
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; CHECK: ret <32 x i8>
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2014-06-09 16:40:16 +08:00
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define x86_mmx @Test_mmx_packuswb(x86_mmx %a, x86_mmx %b) sanitize_memory {
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entry:
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%c = tail call x86_mmx @llvm.x86.mmx.packuswb(x86_mmx %a, x86_mmx %b) nounwind
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ret x86_mmx %c
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}
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; CHECK-LABEL: @Test_mmx_packuswb(
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; CHECK-DAG: bitcast i64 {{.*}} to <4 x i16>
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; CHECK-DAG: bitcast i64 {{.*}} to <4 x i16>
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; CHECK-DAG: icmp ne <4 x i16> {{.*}}, zeroinitializer
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; CHECK-DAG: sext <4 x i1> {{.*}} to <4 x i16>
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; CHECK-DAG: icmp ne <4 x i16> {{.*}}, zeroinitializer
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; CHECK-DAG: sext <4 x i1> {{.*}} to <4 x i16>
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; CHECK-DAG: bitcast <4 x i16> {{.*}} to x86_mmx
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; CHECK-DAG: bitcast <4 x i16> {{.*}} to x86_mmx
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; CHECK-DAG: call x86_mmx @llvm.x86.mmx.packsswb({{.*}}
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; CHECK-DAG: bitcast x86_mmx {{.*}} to i64
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; CHECK-DAG: call x86_mmx @llvm.x86.mmx.packuswb({{.*}}
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; CHECK: ret x86_mmx
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