diff options
Diffstat (limited to 'contrib/llvm/lib/Analysis/ConstantFolding.cpp')
| -rw-r--r-- | contrib/llvm/lib/Analysis/ConstantFolding.cpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/contrib/llvm/lib/Analysis/ConstantFolding.cpp b/contrib/llvm/lib/Analysis/ConstantFolding.cpp index 5de2b04..08a6065 100644 --- a/contrib/llvm/lib/Analysis/ConstantFolding.cpp +++ b/contrib/llvm/lib/Analysis/ConstantFolding.cpp @@ -1085,7 +1085,7 @@ llvm::canConstantFoldCallTo(const Function *F) { case 'c': return Name == "cos" || Name == "ceil" || Name == "cosf" || Name == "cosh"; case 'e': - return Name == "exp"; + return Name == "exp" || Name == "exp2"; case 'f': return Name == "fabs" || Name == "fmod" || Name == "floor"; case 'l': @@ -1221,6 +1221,12 @@ llvm::ConstantFoldCall(Function *F, case 'e': if (Name == "exp") return ConstantFoldFP(exp, V, Ty); + + if (Name == "exp2") { + // Constant fold exp2(x) as pow(2,x) in case the host doesn't have a + // C99 library. + return ConstantFoldBinaryFP(pow, 2.0, V, Ty); + } break; case 'f': if (Name == "fabs") |
