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

[David Sherwood 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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david-arm wrote:

All of the CHECK lines seem to be the same for this test. I wonder if it's possible to reduce the CHECK lines by rewriting the RUN lines to have a common CHECK prefix, i.e.

; RUN: opt < %s -passes=loop-vectorize,instsimplify -force-vector-interleave=1 -S | FileCheck %s --check-prefixes=TFCOMMON,TFNONE
; RUN: opt < %s -passes=loop-vectorize,instsimplify -force-vector-interleave=1 -prefer-predicate-over-epilogue=predicate-dont-vectorize -S | FileCheck %s --check-prefixes=TFCOMMON,TFALWAYS
; RUN: opt < %s -passes=loop-vectorize,instsimplify -force-vector-interleave=1 -prefer-predicate-over-epilogue=predicate-else-scalar-epilogue -S | FileCheck %s --check-prefixes=TFCOMMON,TFFALLBACK

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