[llvm] [NFC][LV] Add test for vectorizing fmuladd with another call (PR #68601)

[Graham Hunter via llvm-commits]

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@@ -855,7 +855,204 @@ for.cond.cleanup:
   ret void
 }
 
+
+; An fmuladd intrinsic followed by a call; we want to make sure we correctly
+; pick up the second call and assign a vector variant to it.
+define double @test_widen_fmuladd_and_call(ptr noalias %a, ptr readnone %b, double %m) #4 {
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huntergr-arm wrote:

I tried regenerating with that change, and got the following message:

> WARNING: Prefix TFCOMMON had conflicting output from different RUN lines for all functions in test /home/grahun01/CommunityLLVM/llvm/test/Transforms/LoopVectorize/AArch64/masked-call.ll

update_test_checks.py wasn't able to generate any TFCOMMON checks beyond a catch-all at the bottom to prevent complaints about no checks for the prefix.

If I just add a TFCOMMON between the last two runlines, the script does find some common checks on the first three functions in the file, but it isn't able to find a common set of checks for this new function.

https://github.com/llvm/llvm-project/pull/68601