diff options
| author | Erich Keane <erich.keane@intel.com> | 2016-11-02 18:29:35 +0000 |
|---|---|---|
| committer | Erich Keane <erich.keane@intel.com> | 2016-11-02 18:29:35 +0000 |
| commit | 757d317c24288bdfb333b6b2c1fbd7ae01d59493 (patch) | |
| tree | 6bc5cdaab773009ff9f3b9b0ffaee356b82dc279 /clang/lib/AST/ItaniumMangle.cpp | |
| parent | 1867c6cd422a18a6e93a8c851d86993671a1718b (diff) | |
regcall: Implement regcall Calling Conv in clang
This patch implements the register call calling convention, which ensures
as many values as possible are passed in registers. CodeGen changes
were committed in https://reviews.llvm.org/rL284108.
Differential Revision: https://reviews.llvm.org/D25204
llvm-svn: 285849
Diffstat (limited to 'clang/lib/AST/ItaniumMangle.cpp')
| -rw-r--r-- | clang/lib/AST/ItaniumMangle.cpp | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/clang/lib/AST/ItaniumMangle.cpp b/clang/lib/AST/ItaniumMangle.cpp index 7f362f6f4204..3208e4e459ea 100644 --- a/clang/lib/AST/ItaniumMangle.cpp +++ b/clang/lib/AST/ItaniumMangle.cpp @@ -493,6 +493,7 @@ private: void mangleUnscopedTemplateName(TemplateName, const AbiTagList *AdditionalAbiTags); void mangleSourceName(const IdentifierInfo *II); + void mangleRegCallName(const IdentifierInfo *II); void mangleSourceNameWithAbiTags( const NamedDecl *ND, const AbiTagList *AdditionalAbiTags = nullptr); void mangleLocalName(const Decl *D, @@ -1241,7 +1242,15 @@ void CXXNameMangler::mangleUnqualifiedName(const NamedDecl *ND, getEffectiveDeclContext(ND)->isFileContext()) Out << 'L'; - mangleSourceName(II); + auto *FD = dyn_cast<FunctionDecl>(ND); + bool IsRegCall = FD && + FD->getType()->castAs<FunctionType>()->getCallConv() == + clang::CC_X86RegCall; + if (IsRegCall) + mangleRegCallName(II); + else + mangleSourceName(II); + writeAbiTags(ND, AdditionalAbiTags); break; } @@ -1415,6 +1424,14 @@ void CXXNameMangler::mangleUnqualifiedName(const NamedDecl *ND, } } +void CXXNameMangler::mangleRegCallName(const IdentifierInfo *II) { + // <source-name> ::= <positive length number> __regcall3__ <identifier> + // <number> ::= [n] <non-negative decimal integer> + // <identifier> ::= <unqualified source code identifier> + Out << II->getLength() + sizeof("__regcall3__") - 1 << "__regcall3__" + << II->getName(); +} + void CXXNameMangler::mangleSourceName(const IdentifierInfo *II) { // <source-name> ::= <positive length number> <identifier> // <number> ::= [n] <non-negative decimal integer> @@ -2497,6 +2514,7 @@ StringRef CXXNameMangler::getCallingConvQualifierName(CallingConv CC) { case CC_X86Pascal: case CC_X86_64Win64: case CC_X86_64SysV: + case CC_X86RegCall: case CC_AAPCS: case CC_AAPCS_VFP: case CC_IntelOclBicc: |