1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mtriple=aarch64-- | FileCheck %s
4 ; A shuffle mask with all undef elements is always legal.
6 define <4 x i32> @PR41535(<2 x i32> %p1, <2 x i32> %p2) {
7 ; CHECK-LABEL: PR41535:
9 ; CHECK-NEXT: ext v0.8b, v0.8b, v1.8b, #4
10 ; CHECK-NEXT: mov v0.d[1], v0.d[0]
12 %cat1 = shufflevector <2 x i32> %p1, <2 x i32> undef, <4 x i32> <i32 undef, i32 1, i32 undef, i32 undef>
13 %cat2 = shufflevector <2 x i32> %p2, <2 x i32> undef, <4 x i32> <i32 0, i32 undef, i32 undef, i32 undef>
14 %r = shufflevector <4 x i32> %cat1, <4 x i32> %cat2, <4 x i32> <i32 undef, i32 undef, i32 1, i32 4>