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| author | Stephen Lin <stephenwlin@gmail.com> | 2013-06-18 17:00:49 +0000 |
|---|---|---|
| committer | Stephen Lin <stephenwlin@gmail.com> | 2013-06-18 17:00:49 +0000 |
| commit | a637fb8ccdecd5b0a1171f262b48d62efe9452bd (patch) | |
| tree | eb3bc6fd16bde72af833d25a71becd14980e2093 /clang/lib/CodeGen/CGVTables.cpp | |
| parent | c724765d528eb6bc22dc12774b98dedf2aba1491 (diff) | |
| download | llvm-a637fb8ccdecd5b0a1171f262b48d62efe9452bd.zip llvm-a637fb8ccdecd5b0a1171f262b48d62efe9452bd.tar.gz llvm-a637fb8ccdecd5b0a1171f262b48d62efe9452bd.tar.bz2 | |
CodeGen: Have 'this'-returning constructors and destructors to take advantage of the new backend 'returned' attribute.
The backend will now use the generic 'returned' attribute to form tail calls where possible, as well as avoid save-restores of 'this' in some cases (specifically the cases that matter for the ARM C++ ABI).
This patch also reverts a prior front-end only partial implementation of these optimizations, since it's no longer required.
llvm-svn: 184205
Diffstat (limited to 'clang/lib/CodeGen/CGVTables.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CGVTables.cpp | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/clang/lib/CodeGen/CGVTables.cpp b/clang/lib/CodeGen/CGVTables.cpp index b1072b4..d116877 100644 --- a/clang/lib/CodeGen/CGVTables.cpp +++ b/clang/lib/CodeGen/CGVTables.cpp @@ -287,8 +287,9 @@ void CodeGenFunction::GenerateThunk(llvm::Function *Fn, GlobalDecl GD, const ThunkInfo &Thunk) { const CXXMethodDecl *MD = cast<CXXMethodDecl>(GD.getDecl()); const FunctionProtoType *FPT = MD->getType()->getAs<FunctionProtoType>(); - QualType ResultType = FPT->getResultType(); QualType ThisType = MD->getThisType(getContext()); + QualType ResultType = + CGM.getCXXABI().HasThisReturn(GD) ? ThisType : FPT->getResultType(); FunctionArgList FunctionArgs; |