Do not generate pow intrinsic calls for builtin_pow
diff --git a/lib/CodeGen/CGBuiltin.cpp b/lib/CodeGen/CGBuiltin.cpp
index 7bcf175..c096d50 100644
--- a/lib/CodeGen/CGBuiltin.cpp
+++ b/lib/CodeGen/CGBuiltin.cpp
@@ -1422,9 +1422,18 @@
return RValue::get(Builder.CreateCall(F, Arg0));
}
- case Builtin::BI__builtin_pow:
- case Builtin::BI__builtin_powf:
- case Builtin::BI__builtin_powl:
+ // @LOCALMOD-START
+ // Do not generate pow intrinsic calls for builtin_pow. The
+ // -fno-math-builtin flag prevents the libcall builtin code from firing
+ // either, but it doesn't work for the __builtin flavors. Pow is currently
+ // (AFAIK) the only math.h function to be converted this way.
+ // This is effectively a revert of r228240
+ // TODO(dschuf): Consider removing -fno-math-builtin and rewriting
+ // llvm.pow to a libcall in IR simplification instead.
+ //case Builtin::BI__builtin_pow:
+ //case Builtin::BI__builtin_powf:
+ //case Builtin::BI__builtin_powl:
+ // @LOCALMOD-END
case Builtin::BIpow:
case Builtin::BIpowf:
case Builtin::BIpowl: {
