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| author | Phoebe Wang <phoebe.wang@intel.com> | 2022-03-29 09:41:31 +0800 |
|---|---|---|
| committer | Phoebe Wang <phoebe.wang@intel.com> | 2022-03-29 11:29:57 +0800 |
| commit | cd26190a10fceb6e1472fabcd9e1736f62f078c4 (patch) | |
| tree | 7bf091b5aae7eaa015321dbe801713a0f839e7a0 /clang/lib/CodeGen/CodeGenFunction.cpp | |
| parent | 48e251b1d60c872e0ce8ede6c030b053ebaa5ee9 (diff) | |
| download | llvm-cd26190a10fceb6e1472fabcd9e1736f62f078c4.zip llvm-cd26190a10fceb6e1472fabcd9e1736f62f078c4.tar.gz llvm-cd26190a10fceb6e1472fabcd9e1736f62f078c4.tar.bz2 | |
[X86][regcall] Support passing / returning structures
Currently, the regcall calling conversion in Clang doesn't match with
ICC when passing / returning structures. https://godbolt.org/z/axxKMKrW7
This patch tries to fix the problem to match with ICC.
Reviewed By: LuoYuanke
Differential Revision: https://reviews.llvm.org/D122104
Diffstat (limited to 'clang/lib/CodeGen/CodeGenFunction.cpp')
| -rw-r--r-- | clang/lib/CodeGen/CodeGenFunction.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/clang/lib/CodeGen/CodeGenFunction.cpp b/clang/lib/CodeGen/CodeGenFunction.cpp index 15719d1..aadf081 100644 --- a/clang/lib/CodeGen/CodeGenFunction.cpp +++ b/clang/lib/CodeGen/CodeGenFunction.cpp @@ -485,6 +485,9 @@ void CodeGenFunction::FinishFunction(SourceLocation EndLoc) { std::max((uint64_t)LargestVectorWidth, VT->getPrimitiveSizeInBits().getKnownMinSize()); + if (CurFnInfo->getMaxVectorWidth() > LargestVectorWidth) + LargestVectorWidth = CurFnInfo->getMaxVectorWidth(); + // Add the required-vector-width attribute. This contains the max width from: // 1. min-vector-width attribute used in the source program. // 2. Any builtins used that have a vector width specified. |