[llvm] [SLP] Use the correct calling convention for vector math routines (PR #180759)

[Graham Hunter via llvm-commits]

================
@@ -1,5 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
 ; RUN: opt -passes=inject-tli-mappings,slp-vectorizer -vector-library=Accelerate -S %s | FileCheck %s
+; RUN: opt -passes=inject-tli-mappings,slp-vectorizer -vector-library=ArmPL -S %s | FileCheck %s --check-prefix=CHECK-ARMPL
----------------
huntergr-arm wrote:

nit: I think the name of the file reflects it being used for the `Accelerate` veclib... maybe this needs to be renamed to something more generic?

https://github.com/llvm/llvm-project/pull/180759