[clang] [llvm] Implement operand bundles for floating-point operations (PR #109798)

[Andy Kaylor via cfe-commits]

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@@ -357,6 +357,9 @@ class IRBuilderBase {
 
   void setConstrainedFPCallAttr(CallBase *I) {
     I->addFnAttr(Attribute::StrictFP);
+    MemoryEffects ME = MemoryEffects::inaccessibleMemOnly();
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andykaylor wrote:

>From the LangRef "Calls and invokes with operand bundles have unknown read / write effect on the heap on entry and exit (even if the call target specifies a memory attribute), unless they’re overridden with callsite specific attributes." I assumed that's why the callsite attribute is being set here.

https://github.com/llvm/llvm-project/pull/109798