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| author | c8ef <c8ef@outlook.com> | 2024-10-22 12:58:11 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2024-10-22 12:58:11 +0800 |
| commit | b90ea5caade7b92796276937467a0dabc355a62e (patch) | |
| tree | d030c92958db526d6e5f8e710819ba05ebfc80bc /llvm/lib/Analysis/ConstantFolding.cpp | |
| parent | 2437784a178adb299cf6e363427e98611e3d2460 (diff) | |
| download | llvm-b90ea5caade7b92796276937467a0dabc355a62e.zip llvm-b90ea5caade7b92796276937467a0dabc355a62e.tar.gz llvm-b90ea5caade7b92796276937467a0dabc355a62e.tar.bz2 | |
[ConstantFold] Fold `erf` and `erff` when the input parameter is a constant value. (#113079)
This patch adds support for constant folding for the `erf` and `erff`
libc functions.
Diffstat (limited to 'llvm/lib/Analysis/ConstantFolding.cpp')
| -rw-r--r-- | llvm/lib/Analysis/ConstantFolding.cpp | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp index 530e928..c5a2c2f 100644 --- a/llvm/lib/Analysis/ConstantFolding.cpp +++ b/llvm/lib/Analysis/ConstantFolding.cpp @@ -1672,8 +1672,8 @@ bool llvm::canConstantFoldCallTo(const CallBase *Call, const Function *F) { Name == "cos" || Name == "cosf" || Name == "cosh" || Name == "coshf"; case 'e': - return Name == "exp" || Name == "expf" || - Name == "exp2" || Name == "exp2f"; + return Name == "exp" || Name == "expf" || Name == "exp2" || + Name == "exp2f" || Name == "erf" || Name == "erff"; case 'f': return Name == "fabs" || Name == "fabsf" || Name == "floor" || Name == "floorf" || @@ -2412,6 +2412,11 @@ static Constant *ConstantFoldScalarCall1(StringRef Name, break; case LibFunc_logl: return nullptr; + case LibFunc_erf: + case LibFunc_erff: + if (TLI->has(Func)) + return ConstantFoldFP(erf, APF, Ty); + break; case LibFunc_nearbyint: case LibFunc_nearbyintf: case LibFunc_rint: @@ -3597,7 +3602,6 @@ bool llvm::isMathLibCallNoop(const CallBase *Call, // Per POSIX, this MAY fail if Op is denormal. We choose not failing. return true; - case LibFunc_asinl: case LibFunc_asin: case LibFunc_asinf: |