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Fix discriminators in metadata, rhbz#1668033
This commit is contained in:
Josh Stone
parent
8eccc650c2
commit
cf8888829a
3 changed files with 95 additions and 1 deletions
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@ -0,0 +1,60 @@
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From 2ad5ac11b17dac347d29191872b2b3d601bbcd1f Mon Sep 17 00:00:00 2001
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From: Jonas Devlieghere <jonas@devlieghere.com>
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Date: Fri, 21 Sep 2018 12:03:14 +0000
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Subject: [PATCH 1/2] Ensure that variant part discriminator is read by
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MetadataLoader
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https://reviews.llvm.org/D42082 introduced variant parts to debug info
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in LLVM. Subsequent work on the Rust compiler has found a bug in that
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patch; namely, there is a path in MetadataLoader that fails to restore
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the discriminator.
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This patch fixes the bug.
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Patch by: Tom Tromey
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Differential revision: https://reviews.llvm.org/D52340
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llvm-svn: 342725
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---
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llvm/lib/Bitcode/Reader/MetadataLoader.cpp | 2 +-
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llvm/test/Assembler/debug-variant-discriminator.ll | 14 ++++++++++++++
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2 files changed, 15 insertions(+), 1 deletion(-)
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create mode 100644 llvm/test/Assembler/debug-variant-discriminator.ll
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diff --git a/lib/Bitcode/Reader/MetadataLoader.cpp b/lib/Bitcode/Reader/MetadataLoader.cpp
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index 011c41e2cecd..a7b542efc19e 100644
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--- a/lib/Bitcode/Reader/MetadataLoader.cpp
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+++ b/lib/Bitcode/Reader/MetadataLoader.cpp
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@@ -1308,7 +1308,7 @@ Error MetadataLoader::MetadataLoaderImpl::parseOneMetadata(
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(Context, Tag, Name, File, Line, Scope, BaseType,
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SizeInBits, AlignInBits, OffsetInBits, Flags,
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Elements, RuntimeLang, VTableHolder, TemplateParams,
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- Identifier));
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+ Identifier, Discriminator));
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if (!IsNotUsedInTypeRef && Identifier)
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MetadataList.addTypeRef(*Identifier, *cast<DICompositeType>(CT));
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diff --git a/test/Assembler/debug-variant-discriminator.ll b/test/Assembler/debug-variant-discriminator.ll
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new file mode 100644
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index 000000000000..5be001cad6be
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--- /dev/null
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+++ b/test/Assembler/debug-variant-discriminator.ll
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@@ -0,0 +1,14 @@
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+; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck %s
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+; RUN: verify-uselistorder %s
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+
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+; CHECK: !named = !{!0, !1, !2}
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+!named = !{!0, !1, !2}
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+
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+; CHECK: !0 = !DICompositeType(tag: DW_TAG_structure_type, name: "Outer", size: 64, align: 64, identifier: "Outer")
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+; CHECK-NEXT: !1 = !DICompositeType(tag: DW_TAG_variant_part, scope: !0, size: 64, discriminator: !2)
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+; CHECK-NEXT: !2 = !DIDerivedType(tag: DW_TAG_member, scope: !1, baseType: !3, size: 64, align: 64, flags: DIFlagArtificial)
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+; CHECK-NEXT: !3 = !DIBasicType(name: "u64", size: 64, encoding: DW_ATE_unsigned)
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+!0 = !DICompositeType(tag: DW_TAG_structure_type, name: "Outer", size: 64, align: 64, identifier: "Outer")
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+!1 = !DICompositeType(tag: DW_TAG_variant_part, scope: !0, size: 64, discriminator: !2)
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+!2 = !DIDerivedType(tag: DW_TAG_member, scope: !1, baseType: !3, size: 64, align: 64, flags: DIFlagArtificial)
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+!3 = !DIBasicType(name: "u64", size: 64, encoding: DW_ATE_unsigned)
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--
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2.20.1
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28
0002-test-Fix-Assembler-debug-info.ll.patch
Normal file
28
0002-test-Fix-Assembler-debug-info.ll.patch
Normal file
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@ -0,0 +1,28 @@
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From 9bfebd6e47cb8513dcd7f7203f29489bdec7bfe4 Mon Sep 17 00:00:00 2001
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From: Jonas Devlieghere <jonas@devlieghere.com>
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Date: Fri, 21 Sep 2018 12:28:44 +0000
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Subject: [PATCH 2/2] [test] Fix Assembler/debug-info.ll
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Update Assembler/debug-info.ll to contain discriminator.
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llvm-svn: 342727
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---
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llvm/test/Assembler/debug-info.ll | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/test/Assembler/debug-info.ll b/test/Assembler/debug-info.ll
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index 5dfb8cd93435..605afc3f1587 100644
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--- a/test/Assembler/debug-info.ll
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+++ b/test/Assembler/debug-info.ll
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@@ -83,7 +83,7 @@
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; CHECK-NEXT: !32 = !DIFile(filename: "file", directory: "dir", checksumkind: CSK_MD5, checksum: "000102030405060708090a0b0c0d0e0f")
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!35 = !DIFile(filename: "file", directory: "dir", checksumkind: CSK_MD5, checksum: "000102030405060708090a0b0c0d0e0f")
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-; CHECK-NEXT: !33 = !DICompositeType(tag: DW_TAG_variant_part, name: "A", scope: !14, size: 64)
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+; CHECK-NEXT: !33 = !DICompositeType(tag: DW_TAG_variant_part, name: "A", scope: !14, size: 64, discriminator: !34)
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; CHECK-NEXT: !34 = !DIDerivedType(tag: DW_TAG_member, scope: !33, baseType: !35, size: 64, align: 64, flags: DIFlagArtificial)
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; CHECK-NEXT: !35 = !DIBasicType(name: "u64", size: 64, encoding: DW_ATE_unsigned)
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!36 = !DICompositeType(tag: DW_TAG_variant_part, name: "A", scope: !16, size: 64, discriminator: !37)
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--
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2.20.1
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@ -55,7 +55,7 @@
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Name: %{pkg_name}
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Version: %{maj_ver}.%{min_ver}.%{patch_ver}
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Release: 1%{?rc_ver:.rc%{rc_ver}}%{?dist}
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Release: 2%{?rc_ver:.rc%{rc_ver}}%{?dist}
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Summary: The Low Level Virtual Machine
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License: NCSA
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@ -73,6 +73,9 @@ Patch12: 0001-unittests-Don-t-install-TestPlugin.so.patch
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Patch14: 0001-CMake-Don-t-prefer-python2.7.patch
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Patch15: 0001-Don-t-set-rpath-when-installing.patch
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Patch16: 0001-Ensure-that-variant-part-discriminator-is-read-by-Me.patch
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Patch17: 0002-test-Fix-Assembler-debug-info.ll.patch
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BuildRequires: gcc
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BuildRequires: gcc-c++
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BuildRequires: cmake
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@ -447,6 +450,9 @@ fi
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%endif
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%changelog
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* Mon Jan 21 2019 Josh Stone <jistone@redhat.com> - 7.0.1-2
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- Fix discriminators in metadata, rhbz#1668033
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* Mon Dec 17 2018 sguelton@redhat.com - 7.0.1-1
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- 7.0.1 release
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