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AsmParser: restore LLVM IR compatibility for linker_private{,_weak}

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This restores the linker_private and linker_private_weak lexemes to permit
translation of the deprecated lexmes.  The behaviour is identical to the bitcode
handling: linker_private and linker_private_weak are handled as if private had
been specified.  This enables compatibility with IR generated by LLVM 3.4.

Reported on IRC by ki9a!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205675 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Saleem Abdulrasool
2014-04-05 20:51:58 +00:00
parent 2c5f72b629
commit 48ee81c679
4 changed files with 25 additions and 0 deletions
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2
lib/AsmParser/LLLexer.cpp
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@@ -481,6 +481,8 @@ lltok::Kind LLLexer::LexIdentifier() {
KEYWORD(private); KEYWORD(private);
KEYWORD(internal); KEYWORD(internal);
KEYWORD(linker_private); // NOTE: deprecated, for parser compatibility
KEYWORD(linker_private_weak); // NOTE: deprecated, for parser compatibility
KEYWORD(available_externally); KEYWORD(available_externally);
KEYWORD(linkonce); KEYWORD(linkonce);
KEYWORD(linkonce_odr); KEYWORD(linkonce_odr);

13
lib/AsmParser/LLParser.cpp
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@@ -247,6 +247,8 @@ bool LLParser::ParseTopLevelEntities() {
// ('constant'|'global') ... // ('constant'|'global') ...
case lltok::kw_private: // OptionalLinkage case lltok::kw_private: // OptionalLinkage
case lltok::kw_internal: // OptionalLinkage case lltok::kw_internal: // OptionalLinkage
case lltok::kw_linker_private: // Obsolete OptionalLinkage
case lltok::kw_linker_private_weak: // Obsolete OptionalLinkage
case lltok::kw_weak: // OptionalLinkage case lltok::kw_weak: // OptionalLinkage
case lltok::kw_weak_odr: // OptionalLinkage case lltok::kw_weak_odr: // OptionalLinkage
case lltok::kw_linkonce: // OptionalLinkage case lltok::kw_linkonce: // OptionalLinkage
@@ -1286,6 +1288,10 @@ bool LLParser::ParseOptionalReturnAttrs(AttrBuilder &B) {
/// ::= 'common' /// ::= 'common'
/// ::= 'extern_weak' /// ::= 'extern_weak'
/// ::= 'external' /// ::= 'external'
///
/// Deprecated Values:
/// ::= 'linker_private'
/// ::= 'linker_private_weak'
bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) { bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
HasLinkage = false; HasLinkage = false;
switch (Lex.getKind()) { switch (Lex.getKind()) {
@@ -1303,6 +1309,13 @@ bool LLParser::ParseOptionalLinkage(unsigned &Res, bool &HasLinkage) {
case lltok::kw_common: Res = GlobalValue::CommonLinkage; break; case lltok::kw_common: Res = GlobalValue::CommonLinkage; break;
case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break; case lltok::kw_extern_weak: Res = GlobalValue::ExternalWeakLinkage; break;
case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break; case lltok::kw_external: Res = GlobalValue::ExternalLinkage; break;
case lltok::kw_linker_private:
case lltok::kw_linker_private_weak:
Lex.Lex();
// treat linker_private and linker_private_weak as PrivateLinkage
Res = GlobalValue::PrivateLinkage;
return false;
} }
Lex.Lex(); Lex.Lex();
HasLinkage = true; HasLinkage = true;

2
lib/AsmParser/LLToken.h
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@@ -39,6 +39,8 @@ namespace lltok {
kw_private, kw_private,
kw_internal, kw_internal,
kw_linker_private, // NOTE: deprecated, for parser compatibility
kw_linker_private_weak, // NOTE: deprecated, for parser compatibility
kw_linkonce, kw_linkonce_odr, kw_linkonce, kw_linkonce_odr,
kw_weak, kw_weak_odr, kw_appending, kw_weak, kw_weak_odr, kw_appending,
kw_dllimport, kw_dllexport, kw_common, kw_available_externally, kw_dllimport, kw_dllexport, kw_common, kw_available_externally,

8
test/Bitcode/deprecated-linker_private-linker_private_weak.ll Normal file
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@@ -0,0 +1,8 @@
; RUN: llvm-as -o - %s | llvm-dis | FileCheck %s
@.linker_private = linker_private unnamed_addr constant [15 x i8] c"linker_private\00", align 64
@.linker_private_weak = linker_private_weak unnamed_addr constant [20 x i8] c"linker_private_weak\00", align 64
; CHECK: @.linker_private = private unnamed_addr constant [15 x i8] c"linker_private\00", align 64
; CHECK: @.linker_private_weak = private unnamed_addr constant [20 x i8] c"linker_private_weak\00", align 64