[llvm] [ConstandFolding][SVE] Do not fold fcmp of denormal without known mode. (PR #150614)

[Yingwei Zheng via llvm-commits]

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@@ -1390,6 +1390,9 @@ Constant *llvm::FlushFPConstant(Constant *Operand, const Instruction *Inst,
     Ty = VecTy->getElementType();
   }
 
+  if (isa<ConstantExpr>(Operand))
+    return Operand;
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dtcxzyw wrote:

See https://github.com/llvm/llvm-project/pull/115407#discussion_r1834002800.


https://github.com/llvm/llvm-project/pull/150614