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| author | Matt Arsenault <Matthew.Arsenault@amd.com> | 2023-07-22 08:12:23 -0400 |
|---|---|---|
| committer | Matt Arsenault <Matthew.Arsenault@amd.com> | 2023-07-24 19:49:06 -0400 |
| commit | a09d9b42f16264980138a7bebd89f49b38c36fbd (patch) | |
| tree | 0ff6568ae5b7bf2f678f77cec479a8ac862a0fe2 /llvm/lib/Analysis/ConstantFolding.cpp | |
| parent | 68b7d3fffd7e8ebc40fdcb0acdcf2e88a93ea5c3 (diff) | |
| download | llvm-a09d9b42f16264980138a7bebd89f49b38c36fbd.zip llvm-a09d9b42f16264980138a7bebd89f49b38c36fbd.tar.gz llvm-a09d9b42f16264980138a7bebd89f49b38c36fbd.tar.bz2 | |
ConstantFolding: Constant fold denormal inputs to canonicalize for IEEE
This makes it possible to use canonicalize to perform a dynamic check
for whether denormal flushing is enabled, which will fold out when the
denormal mode is known. Previously it would only fold if denormal
flushing were known enabled.
https://reviews.llvm.org/D156107
Diffstat (limited to 'llvm/lib/Analysis/ConstantFolding.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ConstantFolding.cpp | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp index fbc6275..38cccb3 100644 --- a/llvm/lib/Analysis/ConstantFolding.cpp +++ b/llvm/lib/Analysis/ConstantFolding.cpp @@ -1973,9 +1973,8 @@ static Constant *constantFoldCanonicalize(const Type *Ty, const CallBase *CI, DenormalMode DenormMode = CI->getFunction()->getDenormalMode(Src.getSemantics()); - // TODO: Should allow folding for pure IEEE. if (DenormMode == DenormalMode::getIEEE()) - return nullptr; + return ConstantFP::get(CI->getContext(), Src); if (DenormMode.Input == DenormalMode::Dynamic) return nullptr; |