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

[Yingwei Zheng via llvm-commits]

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@@ -633,6 +915,108 @@ class InstExecutor : public InstVisitor<InstExecutor, void>,
     });
   }
 
+  void visitFPExtInst(FPExtInst &FPExt) { visitFPConvInst(FPExt); }
+
+  void visitFPTruncInst(FPTruncInst &FPTrunc) { visitFPConvInst(FPTrunc); }
+
+  void visitFPConvInst(Instruction &I) {
+    if (!isDefaultFPEnvironment(CurrentExceptionBehavior,
+                                CurrentRoundingMode)) {
+      Status = false;
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dtcxzyw wrote:

```suggestion
```

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