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authorBritney Fransen <brfransen@gmail.com>2019-02-21 15:56:44 (GMT)
committerBritney Fransen <brfransen@gmail.com>2019-02-21 15:56:44 (GMT)
commit998c5fe43ec03366f26f1430c6453d623f314a51 (patch)
tree4bfc6f49df13ad7fe21667051430c537864a718c /abs/extra/llvm/rusty-discriminator-thingy.patch
parent65fb0683c063752f4b263203a737f6c3ae0a782e (diff)
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llvm: update to 7.0.1
Diffstat (limited to 'abs/extra/llvm/rusty-discriminator-thingy.patch')
-rw-r--r--abs/extra/llvm/rusty-discriminator-thingy.patch57
1 files changed, 57 insertions, 0 deletions
diff --git a/abs/extra/llvm/rusty-discriminator-thingy.patch b/abs/extra/llvm/rusty-discriminator-thingy.patch
new file mode 100644
index 0000000..fb7ef03
--- /dev/null
+++ b/abs/extra/llvm/rusty-discriminator-thingy.patch
@@ -0,0 +1,57 @@
+From da1fb72bb305d6bc1f3899d541414146934bf80f Mon Sep 17 00:00:00 2001
+From: Jonas Devlieghere <jonas@devlieghere.com>
+Date: Fri, 21 Sep 2018 12:03:14 +0000
+Subject: [PATCH] Ensure that variant part discriminator is read by
+ MetadataLoader
+
+https://reviews.llvm.org/D42082 introduced variant parts to debug info
+in LLVM. Subsequent work on the Rust compiler has found a bug in that
+patch; namely, there is a path in MetadataLoader that fails to restore
+the discriminator.
+
+This patch fixes the bug.
+
+Patch by: Tom Tromey
+
+Differential revision: https://reviews.llvm.org/D52340
+
+git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@342725 91177308-0d34-0410-b5e6-96231b3b80d8
+---
+ lib/Bitcode/Reader/MetadataLoader.cpp | 2 +-
+ test/Assembler/debug-variant-discriminator.ll | 14 ++++++++++++++
+ 2 files changed, 15 insertions(+), 1 deletion(-)
+ create mode 100644 test/Assembler/debug-variant-discriminator.ll
+
+diff --git a/lib/Bitcode/Reader/MetadataLoader.cpp b/lib/Bitcode/Reader/MetadataLoader.cpp
+index 3fe7d2205631..4781cfe3dea6 100644
+--- a/lib/Bitcode/Reader/MetadataLoader.cpp
++++ b/lib/Bitcode/Reader/MetadataLoader.cpp
+@@ -1313,7 +1313,7 @@ Error MetadataLoader::MetadataLoaderImpl::parseOneMetadata(
+ (Context, Tag, Name, File, Line, Scope, BaseType,
+ SizeInBits, AlignInBits, OffsetInBits, Flags,
+ Elements, RuntimeLang, VTableHolder, TemplateParams,
+- Identifier));
++ Identifier, Discriminator));
+ if (!IsNotUsedInTypeRef && Identifier)
+ MetadataList.addTypeRef(*Identifier, *cast<DICompositeType>(CT));
+
+diff --git a/test/Assembler/debug-variant-discriminator.ll b/test/Assembler/debug-variant-discriminator.ll
+new file mode 100644
+index 000000000000..5be001cad6be
+--- /dev/null
++++ b/test/Assembler/debug-variant-discriminator.ll
+@@ -0,0 +1,14 @@
++; RUN: llvm-as < %s | llvm-dis | llvm-as | llvm-dis | FileCheck %s
++; RUN: verify-uselistorder %s
++
++; CHECK: !named = !{!0, !1, !2}
++!named = !{!0, !1, !2}
++
++; CHECK: !0 = !DICompositeType(tag: DW_TAG_structure_type, name: "Outer", size: 64, align: 64, identifier: "Outer")
++; CHECK-NEXT: !1 = !DICompositeType(tag: DW_TAG_variant_part, scope: !0, size: 64, discriminator: !2)
++; CHECK-NEXT: !2 = !DIDerivedType(tag: DW_TAG_member, scope: !1, baseType: !3, size: 64, align: 64, flags: DIFlagArtificial)
++; CHECK-NEXT: !3 = !DIBasicType(name: "u64", size: 64, encoding: DW_ATE_unsigned)
++!0 = !DICompositeType(tag: DW_TAG_structure_type, name: "Outer", size: 64, align: 64, identifier: "Outer")
++!1 = !DICompositeType(tag: DW_TAG_variant_part, scope: !0, size: 64, discriminator: !2)
++!2 = !DIDerivedType(tag: DW_TAG_member, scope: !1, baseType: !3, size: 64, align: 64, flags: DIFlagArtificial)
++!3 = !DIBasicType(name: "u64", size: 64, encoding: DW_ATE_unsigned)