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| author | Akira Hatanaka <ahatanaka@apple.com> | 2023-01-26 15:29:33 -0800 |
|---|---|---|
| committer | Akira Hatanaka <ahatanaka@apple.com> | 2023-02-15 10:15:13 -0800 |
| commit | 57865bc5ad277166507d9e9fbb5205be86caa73a (patch) | |
| tree | aad7f64d151b5738330e4b097986814aa5415d1e /clang/lib/CodeGen/CodeGenFunction.cpp | |
| parent | 9048ea28da954f720eea5cf551c29ccebac2340e (diff) | |
| download | llvm-57865bc5ad277166507d9e9fbb5205be86caa73a.zip llvm-57865bc5ad277166507d9e9fbb5205be86caa73a.tar.gz llvm-57865bc5ad277166507d9e9fbb5205be86caa73a.tar.bz2 | |
[CodeGen] Add a flag to `Address` and `Lvalue` that is used to keep
track of whether the pointer is known not to be null
The flag will be used for the arm64e work we plan to upstream in the
future (see https://lists.llvm.org/pipermail/llvm-dev/2019-October/136091.html).
Currently the flag has no effect on code generation.
Differential Revision: https://reviews.llvm.org/D142584
Diffstat (limited to 'clang/lib/CodeGen/CodeGenFunction.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CodeGenFunction.cpp | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/clang/lib/CodeGen/CodeGenFunction.cpp b/clang/lib/CodeGen/CodeGenFunction.cpp index 8cbe2a5..af60b31 100644 --- a/clang/lib/CodeGen/CodeGenFunction.cpp +++ b/clang/lib/CodeGen/CodeGenFunction.cpp @@ -1104,8 +1104,9 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, QualType RetTy, auto AI = CurFn->arg_begin(); if (CurFnInfo->getReturnInfo().isSRetAfterThis()) ++AI; - ReturnValue = Address(&*AI, ConvertType(RetTy), - CurFnInfo->getReturnInfo().getIndirectAlign()); + ReturnValue = + Address(&*AI, ConvertType(RetTy), + CurFnInfo->getReturnInfo().getIndirectAlign(), KnownNonNull); if (!CurFnInfo->getReturnInfo().getIndirectByVal()) { ReturnValuePointer = CreateDefaultAlignTempAlloca(Int8PtrTy, "result.ptr"); @@ -1125,8 +1126,8 @@ void CodeGenFunction::StartFunction(GlobalDecl GD, QualType RetTy, cast<llvm::GetElementPtrInst>(Addr)->getResultElementType(); ReturnValuePointer = Address(Addr, Ty, getPointerAlign()); Addr = Builder.CreateAlignedLoad(Ty, Addr, getPointerAlign(), "agg.result"); - ReturnValue = - Address(Addr, ConvertType(RetTy), CGM.getNaturalTypeAlignment(RetTy)); + ReturnValue = Address(Addr, ConvertType(RetTy), + CGM.getNaturalTypeAlignment(RetTy), KnownNonNull); } else { ReturnValue = CreateIRTemp(RetTy, "retval"); |