[PATCH] testsuite: aarch64: Add zero-high-half tests for narrowing shifts

[Jonathan Wright via Gcc-patches]

Hi,

This patch adds tests to verify that Neon narrowing-shift instructions
clear the top half of the result vector. It is sufficient to show that a
subsequent combine with a zero-vector is optimized away - leaving
just the narrowing-shift instruction.

Ok for master?

Thanks,
Jonathan

---

gcc/testsuite/ChangeLog:

2021-06-15  Jonathan Wright  <jonathan.wri...@arm.com>

        * gcc.target/aarch64/narrow_zero_high_half.c: New test.

rb14569.patch
Description: rb14569.patch