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| author | Eli Friedman <eli.friedman@gmail.com> | 2012-02-28 22:07:56 +0000 |
|---|---|---|
| committer | Eli Friedman <eli.friedman@gmail.com> | 2012-02-28 22:07:56 +0000 |
| commit | c5685438df6105052b02c9e02f01c34489606308 (patch) | |
| tree | a9eb39fec577180ea59dd27f6401688e0d3da217 /lib | |
| parent | 212000e24cf11da0badea90c23d4f300da34e607 (diff) | |
| download | clang-c5685438df6105052b02c9e02f01c34489606308.tar.gz clang-c5685438df6105052b02c9e02f01c34489606308.tar.bz2 clang-c5685438df6105052b02c9e02f01c34489606308.tar.xz | |
Prefer bitcast+GEP over ptrtoint+sub+inttoptr: it's semantically equivalent here, and generally nicer to the optimizer.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151659 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/CodeGen/CGClass.cpp | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/CodeGen/CGClass.cpp b/lib/CodeGen/CGClass.cpp index b9abbf2901..e3b5777387 100644 --- a/lib/CodeGen/CGClass.cpp +++ b/lib/CodeGen/CGClass.cpp @@ -249,9 +249,9 @@ CodeGenFunction::GetAddressOfDerivedClass(llvm::Value *Value, } // Apply the offset. - Value = Builder.CreatePtrToInt(Value, NonVirtualOffset->getType()); - Value = Builder.CreateSub(Value, NonVirtualOffset); - Value = Builder.CreateIntToPtr(Value, DerivedPtrTy); + Value = Builder.CreateBitCast(Value, Int8PtrTy); + Value = Builder.CreateGEP(Value, Builder.CreateNeg(NonVirtualOffset), + "sub.ptr"); // Just cast. Value = Builder.CreateBitCast(Value, DerivedPtrTy); |