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| author | Peter Collingbourne <peter@pcc.me.uk> | 2016-12-13 20:50:44 +0000 |
|---|---|---|
| committer | Peter Collingbourne <peter@pcc.me.uk> | 2016-12-13 20:50:44 +0000 |
| commit | 25a2b70cd0424ba3e344a70fea8dfa13a73829c2 (patch) | |
| tree | cbfad442e24b31050c6e4066ee4e41641528ec2c /clang/lib/CodeGen/ItaniumCXXABI.cpp | |
| parent | 2849c4e841ccd421b8b0ba7486cfc66db9a47632 (diff) | |
| download | bcm5719-llvm-25a2b70cd0424ba3e344a70fea8dfa13a73829c2.tar.gz bcm5719-llvm-25a2b70cd0424ba3e344a70fea8dfa13a73829c2.zip | |
CodeGen: Start using inrange annotations on vtable getelementptr.
This annotation allows the optimizer to split vtable groups, as permitted by
a change to the Itanium ABI [1] that prevents compilers from adjusting virtual
table pointers between virtual tables.
[1] https://github.com/MentorEmbedded/cxx-abi/pull/7
Differential Revision: https://reviews.llvm.org/D24431
llvm-svn: 289585
Diffstat (limited to 'clang/lib/CodeGen/ItaniumCXXABI.cpp')
| -rw-r--r-- | clang/lib/CodeGen/ItaniumCXXABI.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/clang/lib/CodeGen/ItaniumCXXABI.cpp b/clang/lib/CodeGen/ItaniumCXXABI.cpp index d32a131c6d0..963b1403f5b 100644 --- a/clang/lib/CodeGen/ItaniumCXXABI.cpp +++ b/clang/lib/CodeGen/ItaniumCXXABI.cpp @@ -1549,8 +1549,9 @@ ItaniumCXXABI::getVTableAddressPoint(BaseSubobject Base, llvm::ConstantInt::get(CGM.Int32Ty, AddressPoint.AddressPointIndex), }; - return llvm::ConstantExpr::getInBoundsGetElementPtr(VTable->getValueType(), - VTable, Indices); + return llvm::ConstantExpr::getGetElementPtr(VTable->getValueType(), VTable, + Indices, /*InBounds=*/true, + /*InRangeIndex=*/1); } llvm::Value *ItaniumCXXABI::getVTableAddressPointInStructorWithVTT( |
