[llvm] [llvm][RISCV] Support fma codegen for zvfbfa (PR #172949)

[Craig Topper via llvm-commits]

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@@ -18306,7 +18307,9 @@ NodeExtensionHelper::getSupportedFoldings(const SDNode *Root) {
   case RISCVISD::VFNMADD_VL:
   case RISCVISD::VFNMSUB_VL:
     Strategies.push_back(canFoldToVWWithSameExtension);
-    if (Root->getOpcode() == RISCVISD::VFMADD_VL)
+    // FIXME: Once other widen operations are supported we can merge
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topperc wrote:

We need a test

https://github.com/llvm/llvm-project/pull/172949