[llvm] [X86] combineStore - fold scalar float store(fabs/fneg(load())) -> store(and/xor(load(),c)) (PR #118680)

[Phoebe Wang via llvm-commits]

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@@ -52661,6 +52661,29 @@ static SDValue combineStore(SDNode *N, SelectionDAG &DAG,
                         St->getMemOperand()->getFlags());
   }
 
+  // Convert scalar fabs/fneg load-store to integer equivalents.
+  if ((VT == MVT::f32 || VT == MVT::f64) &&
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phoebewang wrote:

Should we consider more FP types like half, bfloat, fp128?

https://github.com/llvm/llvm-project/pull/118680