[clang] [CIR][AArch64] Implement vqshrun_n NEON builtin (PR #195080)

[via cfe-commits]

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+// REQUIRES: aarch64-registered-target || arm-registered-target
+
+// RUN:                   %clang_cc1 -triple arm64-none-linux-gnu -target-feature +neon -disable-O0-optnone -flax-vector-conversions=none           -emit-llvm -o - %s | opt -S -passes=mem2reg,sroa,simplifycfg | FileCheck %s --check-prefixes=LLVM
+// RUN: %if cir-enabled %{%clang_cc1 -triple arm64-none-linux-gnu -target-feature +neon -disable-O0-optnone -flax-vector-conversions=none -fclangir -emit-llvm -o - %s | opt -S -passes=mem2reg,sroa,simplifycfg | FileCheck %s --check-prefixes=LLVM %}
+// RUN: %if cir-enabled %{%clang_cc1 -triple arm64-none-linux-gnu -target-feature +neon -disable-O0-optnone -flax-vector-conversions=none -fclangir -emit-cir  -o - %s |                               FileCheck %s --check-prefixes=CIR %}
+
+#include <arm_neon.h>
+
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IAmCheese1231 wrote:

Added comments in similar format

https://github.com/llvm/llvm-project/pull/195080