================
@@ -678,6 +682,71 @@ fp::ExceptionBehavior CallBase::getExceptionBehavior() 
const {
   return fp::ebIgnore;
 }
 
+DenormalMode::DenormalModeKind CallBase::getInputDenormMode() const {
+  if (auto InDenormBundle = getOperandBundle(LLVMContext::OB_fp_control)) {
+    auto DenormOperand =
+        getBundleOperandByPrefix(*InDenormBundle, "denorm.in=");
+    if (DenormOperand) {
+      if (auto Mode = parseDenormalKindFromOperandBundle(*DenormOperand))
+        return *Mode;
+    } else {
+      return DenormalMode::IEEE;
+    }
+  }
+
+  if (!getParent())
+    return DenormalMode::IEEE;
+  const Function *F = getFunction();
+  if (!F)
+    return DenormalMode::IEEE;
----------------
spavloff wrote:

Removed this search.

https://github.com/llvm/llvm-project/pull/136501
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