[llvm] [llvm] Add support for llvm IR atomicrmw fminimum/fmaximum instructions (PR #136759)

[Matt Arsenault via llvm-commits]

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@@ -1765,6 +1765,16 @@ Value *SplitPtrStructs::handleMemoryInst(Instruction *I, Value *Arg, Value *Ptr,
                          "buffer resources and should've been expanded away");
       break;
     }
+    case AtomicRMWInst::FMaximum: {
+      report_fatal_error("atomic floating point fmaximum not supported for "
+                         "buffer resources and should've been expanded away");
+      break;
+    }
+    case AtomicRMWInst::FMinimum: {
+      report_fatal_error("atomic floating point fminimum not supported for "
+                         "buffer resources and should've been expanded away");
+      break;
+    }
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arsenm wrote:

we don't really need a unique error message for each of these cases

https://github.com/llvm/llvm-project/pull/136759