[llvm] [llubi] Initial support for floating-point numbers (PR #188453)

[Yingwei Zheng via llvm-commits]

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@@ -140,6 +319,46 @@ class InstExecutor : public InstVisitor<InstExecutor, void>,
     });
   }
 
+  void visitFPBinOp(
+      Instruction &I,
+      function_ref<APFloat(const APFloat &, const APFloat &)> ScalarFn) {
+    FastMathFlags FMF = cast<FPMathOperator>(I).getFastMathFlags();
+    DenormalMode DenormMode = getCurrentDenormalMode(I);
+
+    if (!isDefaultFPEnvironment(CurrentExceptionBehavior,
+                                CurrentRoundingMode)) {
+      Status = false;
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dtcxzyw wrote:

```suggestion
```
Handled by reportImmediateUB.


https://github.com/llvm/llvm-project/pull/188453