support IDEF, fnegabs (thanks sampo)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21023 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/IA64/IA64ISelPattern.cpp b/lib/Target/IA64/IA64ISelPattern.cpp
index 7b976fc..599f289 100644
--- a/lib/Target/IA64/IA64ISelPattern.cpp
+++ b/lib/Target/IA64/IA64ISelPattern.cpp
@@ -609,6 +609,11 @@
return Result;
}
+
+ case ISD::UNDEF: {
+ BuildMI(BB, IA64::IDEF, 0, Result);
+ return Result;
+ }
case ISD::GlobalAddress: {
GlobalValue *GV = cast<GlobalAddressSDNode>(N)->getGlobal();
@@ -799,9 +804,16 @@
}
case ISD::FNEG: {
- Tmp1 = SelectExpr(N.getOperand(0));
assert(DestType == MVT::f64 && "trying to fneg something other than f64?");
- BuildMI(BB, IA64::FNEG, 1, Result).addReg(Tmp1);
+
+ if (ISD::FABS == N.getOperand(0).getOpcode()) { // && hasOneUse()?
+ Tmp1 = SelectExpr(N.getOperand(0).getOperand(0));
+ BuildMI(BB, IA64::FNEGABS, 1, Result).addReg(Tmp1); // fold in abs
+ } else {
+ Tmp1 = SelectExpr(N.getOperand(0));
+ BuildMI(BB, IA64::FNEG, 1, Result).addReg(Tmp1); // plain old fneg
+ }
+
return Result;
}