[PATCH] D38771: [x86] avoid infinite loop from SoftenFloatOperand (PR34866)

[Simon Pilgrim via Phabricator via llvm-commits]

RKSimon added inline comments.


================
Comment at: lib/Target/X86/X86ISelLowering.cpp:35229
+      (Y.getOpcode() == ISD::BITCAST &&
+       Y.getOperand(0).getValueType() == MVT::f128))
+    return SDValue();
----------------
Does this work?
```
if (peekThroughBitcasts(X).getValueType() == MVT::f128) ||
     peekThroughBitcasts(Y).getValueType() == MVT::f128))
```


https://reviews.llvm.org/D38771