Add support for FSQRT node, patch contributed by Morten Ofstad
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@21610 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/X86/X86ISelPattern.cpp b/lib/Target/X86/X86ISelPattern.cpp
index bb9e901..d7ea0e3 100644
--- a/lib/Target/X86/X86ISelPattern.cpp
+++ b/lib/Target/X86/X86ISelPattern.cpp
@@ -1830,12 +1830,16 @@
return Result;
case ISD::FABS:
- Tmp1 = SelectExpr(Node->getOperand(0));
- BuildMI(BB, X86::FABS, 1, Result).addReg(Tmp1);
- return Result;
case ISD::FNEG:
+ case ISD::FSQRT:
+ assert(N.getValueType()==MVT::f64 && "Illegal type for this operation");
Tmp1 = SelectExpr(Node->getOperand(0));
- BuildMI(BB, X86::FCHS, 1, Result).addReg(Tmp1);
+ switch (N.getOpcode()) {
+ default: assert(0 && "Unreachable!");
+ case ISD::FABS: BuildMI(BB, X86::FABS, 1, Result).addReg(Tmp1); break;
+ case ISD::FNEG: BuildMI(BB, X86::FCHS, 1, Result).addReg(Tmp1); break;
+ case ISD::FSQRT: BuildMI(BB, X86::FSQRT, 1, Result).addReg(Tmp1); break;
+ }
return Result;
case ISD::MULHU: