diff options
Diffstat (limited to 'llvm/lib/Analysis')
| -rw-r--r-- | llvm/lib/Analysis/ConstantFolding.cpp | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/llvm/lib/Analysis/ConstantFolding.cpp b/llvm/lib/Analysis/ConstantFolding.cpp index e92cfccc840..0698cfb7306 100644 --- a/llvm/lib/Analysis/ConstantFolding.cpp +++ b/llvm/lib/Analysis/ConstantFolding.cpp @@ -1773,13 +1773,16 @@ static Constant *ConstantFoldScalarCall1(StringRef Name, case Intrinsic::log: return ConstantFoldFP(log, V, Ty); case Intrinsic::log2: + // TODO: What about hosts that lack a C99 library? return ConstantFoldFP(Log2, V, Ty); case Intrinsic::log10: + // TODO: What about hosts that lack a C99 library? return ConstantFoldFP(log10, V, Ty); case Intrinsic::exp: return ConstantFoldFP(exp, V, Ty); case Intrinsic::exp2: - return ConstantFoldFP(exp2, V, Ty); + // Fold exp2(x) as pow(2, x), in case the host lacks a C99 library. + return ConstantFoldBinaryFP(pow, 2.0, V, Ty); case Intrinsic::sin: return ConstantFoldFP(sin, V, Ty); case Intrinsic::cos: @@ -1870,6 +1873,7 @@ static Constant *ConstantFoldScalarCall1(StringRef Name, case LibFunc_log10_finite: case LibFunc_log10f_finite: if (V > 0.0 && TLI->has(Func)) + // TODO: What about hosts that lack a C99 library? return ConstantFoldFP(log10, V, Ty); break; case LibFunc_round: @@ -2037,6 +2041,7 @@ static Constant *ConstantFoldScalarCall2(StringRef Name, case LibFunc_fmod: case LibFunc_fmodf: if (TLI->has(Func)) + // TODO: What about hosts that lack a C99 library? return ConstantFoldBinaryFP(fmod, Op1V, Op2V, Ty); break; case LibFunc_atan2: |
