[llvm] [ARM] Mark function calls as possibly changing FPSCR (PR #160699)

[Simon Tatham via llvm-commits]

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@@ -0,0 +1,13 @@
+; RUN: llc -mtriple aarch64-none-linux-gnu -stop-after=finalize-isel %s -o - | FileCheck %s
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statham-arm wrote:

This test is using an AArch64 triple, even though the rest of the patch is modifying the ARM backend. Surely a mistake? It's testing the version of this functionality in a different backend. Also visible in the fact that the expected output refers to `$fpcr`, even though you defined the rounding control register as FPSCR above.

https://github.com/llvm/llvm-project/pull/160699