Imported Upstream version 5.18.0.161

Former-commit-id: 4db48158d3a35497b8f118ab21b5f08ac3d86d98

external/llvm/test/CodeGen/AArch64/arm64-vselect.ll

@@ -0,0 +1,25 @@
+; RUN: llc < %s -mtriple=arm64-eabi -aarch64-neon-syntax=apple | FileCheck %s
+
+;CHECK: @func63
+;CHECK: cmeq.4h v0, v0, v1
+
+;FIXME: currently, it will generate 3 instructions:
+; ushll.4s	v0, v0, #0
+; shl.4s	v0, v0, #31
+; sshr.4s	v0, v0, #31
+;But these instrucitons can be optimized into 1 instruction:
+; sshll.4s  v0, v0, #0
+
+;CHECK: bsl.16b v0, v2, v3
+;CHECK: str  q0, [x0]
+;CHECK: ret
+
+%T0_63 = type <4 x i16>
+%T1_63 = type <4 x i32>
+%T2_63 = type <4 x i1>
+define void @func63(%T1_63* %out, %T0_63 %v0, %T0_63 %v1, %T1_63 %v2, %T1_63 %v3) {
+  %cond = icmp eq %T0_63 %v0, %v1
+  %r = select %T2_63 %cond, %T1_63 %v2, %T1_63 %v3
+  store %T1_63 %r, %T1_63* %out
+  ret void
+}