[llvm] [ConstantFold] Fold `ilogb` and `ilogbf` when the input parameter is a constant value. (PR #113014)
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llvm-commits at lists.llvm.org
Fri Oct 18 22:04:53 PDT 2024
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@@ -2391,6 +2405,11 @@ static Constant *ConstantFoldScalarCall1(StringRef Name,
// TODO: What about hosts that lack a C99 library?
return ConstantFoldFP(log10, APF, Ty);
break;
+ case LibFunc_ilogb:
+ case LibFunc_ilogbf:
+ if (!APF.isZero() && TLI->has(Func))
+ return ConstantFoldInt(ilogb, APF, Ty);
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c8ef wrote:
Good idea!
https://github.com/llvm/llvm-project/pull/113014
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