64b: Expand S/UREM
32b: No longer pattern match fneg(fsub(fmul)) as fnmsub
Pattern match fsub a, mul(b, c) as fnmsub
Pattern match fadd a, mul(b, c) as fmadd
Those changes speed up hydro2d by 2.5%, distray by 6%, and scimark by 8%
llvm-svn: 21161
diff --git a/llvm/lib/Target/PowerPC/PPC64ISelPattern.cpp b/llvm/lib/Target/PowerPC/PPC64ISelPattern.cpp
index dfb572d..773299c 100644
--- a/llvm/lib/Target/PowerPC/PPC64ISelPattern.cpp
+++ b/llvm/lib/Target/PowerPC/PPC64ISelPattern.cpp
@@ -55,6 +55,10 @@
setOperationAction(ISD::SEXTLOAD, MVT::i1, Expand);
setOperationAction(ISD::SEXTLOAD, MVT::i8, Expand);
+ // PowerPC has no SREM/UREM instructions
+ setOperationAction(ISD::SREM, MVT::i64, Expand);
+ setOperationAction(ISD::UREM, MVT::i64, Expand);
+
setShiftAmountFlavor(Extend); // shl X, 32 == 0
addLegalFPImmediate(+0.0); // Necessary for FSEL
addLegalFPImmediate(-0.0); //