[llvm] [WebAssembly] Lower fmuladd to madd and nmadd (PR #161355)

[Derek Schuff via llvm-commits]

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@@ -317,6 +317,14 @@ WebAssemblyTargetLowering::WebAssemblyTargetLowering(
       setOperationAction(ISD::ZERO_EXTEND_VECTOR_INREG, T, Custom);
     }
 
+    if (Subtarget->hasRelaxedSIMD()) {
+      if (Subtarget->hasFP16()) {
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dschuff wrote:

OK, great. if you look at the tests below, dow all of those conversion libcalls look like something we should be able to eventually lower to instructions?

not necessarily needed for this PR, but something for the future.

https://github.com/llvm/llvm-project/pull/161355