[llvm] [IA]: Construct (de)interleave4 out of (de)interleave2 (PR #89276)

[Craig Topper via llvm-commits]

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@@ -0,0 +1,78 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc -mtriple=aarch64--linux-gnu -mattr=+sve < %s | FileCheck %s
+
+%struct.xyzt = type { i32, i32, i32, i32 }
+
+define dso_local void @loop_xyzt(ptr noalias nocapture noundef writeonly %dst, ptr nocapture noundef readonly %a, ptr nocapture noundef readonly %b) {
+; CHECK-LABEL: loop_xyzt:
+; CHECK:       // %bb.0: // %entry
+; CHECK-NEXT:    ptrue p0.s
+; CHECK-NEXT:    cntw x10
+; CHECK-NEXT:    mov x8, xzr
+; CHECK-NEXT:    mov w9, #1024 // =0x400
+; CHECK-NEXT:    neg x10, x10
+; CHECK-NEXT:    rdvl x11, #4
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topperc wrote:

And drop unnecessary attributes like dso_local

https://github.com/llvm/llvm-project/pull/89276