Teach SDISel to combine fsin / fcos into a fsincos node if the following

conditions are met:
1. They share the same operand and are in the same BB.
2. Both outputs are used.
3. The target has a native instruction that maps to ISD::FSINCOS node or
   the target provides a sincos library call.

Implemented the generic optimization in sdisel and enabled it for
Mac OSX. Also added an additional optimization for x86_64 Mac OSX by
using an alternative entry point __sincos_stret which returns the two
results in xmm0 / xmm1.

rdar://13087969
PR13204

llvm-svn: 173755

1 files changed, 1 insertions, 0 deletions

diff --git a/llvm/lib/Target/MBlaze/MBlazeISelLowering.cpp b/llvm/lib/Target/MBlaze/MBlazeISelLowering.cpp
index 8a9f0922b17..5b3c6fede35 100644
--- a/llvm/lib/Target/MBlaze/MBlazeISelLowering.cpp
+++ b/llvm/lib/Target/MBlaze/MBlazeISelLowering.cpp
@@ -81,6 +81,7 @@ MBlazeTargetLowering::MBlazeTargetLowering(MBlazeTargetMachine &TM)
   setOperationAction(ISD::FCOPYSIGN,  MVT::f64, Expand);
   setOperationAction(ISD::FSIN,       MVT::f32, Expand);
   setOperationAction(ISD::FCOS,       MVT::f32, Expand);
+  setOperationAction(ISD::FSINCOS,    MVT::f32, Expand);
   setOperationAction(ISD::FPOWI,      MVT::f32, Expand);
   setOperationAction(ISD::FPOW,       MVT::f32, Expand);
   setOperationAction(ISD::FLOG,       MVT::f32, Expand);