[llvm] [IR] Add new function attribute nocreateundeforpoison (PR #164809)

[Jay Foad via llvm-commits]

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@@ -449,7 +449,7 @@ def int_amdgcn_log_clamp : DefaultAttrsIntrinsic<
 
 def int_amdgcn_fmul_legacy : ClangBuiltin<"__builtin_amdgcn_fmul_legacy">,
   DefaultAttrsIntrinsic<[llvm_float_ty], [llvm_float_ty, llvm_float_ty],
-  [IntrNoMem, IntrSpeculatable, Commutative]
+  [IntrNoMem, IntrSpeculatable, Commutative, IntrNoCreateUndefOrPoison]
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jayfoad wrote:

Sure, done.

https://github.com/llvm/llvm-project/pull/164809