--- /dev/null
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 2
+; RUN: llc -mtriple=aarch64 -mattr=+sve < %s | FileCheck %s
+
+; Test that we do not end in an infinite loop (https://github.com/llvm/llvm-project/issues/63322)
+
+declare void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8>, <vscale x 16 x ptr>, i32 immarg, <vscale x 16 x i1>)
+
+define fastcc i8 @allocno_reload_assign() {
+; CHECK-LABEL: allocno_reload_assign:
+; CHECK: // %bb.0:
+; CHECK-NEXT: mov z3.b, #0 // =0x0
+; CHECK-NEXT: ptrue p0.d
+; CHECK-NEXT: uunpklo z4.h, z3.b
+; CHECK-NEXT: uunpkhi z7.h, z3.b
+; CHECK-NEXT: uunpklo z2.s, z4.h
+; CHECK-NEXT: uunpkhi z4.s, z4.h
+; CHECK-NEXT: uunpklo z6.s, z7.h
+; CHECK-NEXT: uunpkhi z16.s, z7.h
+; CHECK-NEXT: ptrue p1.b
+; CHECK-NEXT: mov z0.d, #0 // =0x0
+; CHECK-NEXT: uunpklo z1.d, z2.s
+; CHECK-NEXT: uunpkhi z2.d, z2.s
+; CHECK-NEXT: uunpklo z3.d, z4.s
+; CHECK-NEXT: uunpkhi z4.d, z4.s
+; CHECK-NEXT: uunpklo z5.d, z6.s
+; CHECK-NEXT: uunpkhi z6.d, z6.s
+; CHECK-NEXT: uunpklo z7.d, z16.s
+; CHECK-NEXT: uunpkhi z16.d, z16.s
+; CHECK-NEXT: .LBB0_1: // =>This Inner Loop Header: Depth=1
+; CHECK-NEXT: fmov d17, xzr
+; CHECK-NEXT: cmpeq p2.d, p0/z, z17.d, #0
+; CHECK-NEXT: uzp1 p2.s, p2.s, p0.s
+; CHECK-NEXT: uzp1 p2.h, p2.h, p0.h
+; CHECK-NEXT: uzp1 p2.b, p2.b, p0.b
+; CHECK-NEXT: mov z17.b, p2/z, #1 // =0x1
+; CHECK-NEXT: fmov w8, s17
+; CHECK-NEXT: sbfx x8, x8, #0, #1
+; CHECK-NEXT: whilelo p2.b, xzr, x8
+; CHECK-NEXT: not p2.b, p1/z, p2.b
+; CHECK-NEXT: punpklo p3.h, p2.b
+; CHECK-NEXT: punpkhi p2.h, p2.b
+; CHECK-NEXT: punpklo p4.h, p3.b
+; CHECK-NEXT: punpkhi p3.h, p3.b
+; CHECK-NEXT: punpklo p5.h, p4.b
+; CHECK-NEXT: punpkhi p4.h, p4.b
+; CHECK-NEXT: st1b { z1.d }, p5, [z0.d]
+; CHECK-NEXT: punpklo p5.h, p2.b
+; CHECK-NEXT: st1b { z2.d }, p4, [z0.d]
+; CHECK-NEXT: punpklo p4.h, p3.b
+; CHECK-NEXT: punpkhi p2.h, p2.b
+; CHECK-NEXT: punpkhi p3.h, p3.b
+; CHECK-NEXT: st1b { z3.d }, p4, [z0.d]
+; CHECK-NEXT: punpklo p4.h, p5.b
+; CHECK-NEXT: st1b { z4.d }, p3, [z0.d]
+; CHECK-NEXT: punpkhi p3.h, p5.b
+; CHECK-NEXT: st1b { z5.d }, p4, [z0.d]
+; CHECK-NEXT: punpklo p4.h, p2.b
+; CHECK-NEXT: punpkhi p2.h, p2.b
+; CHECK-NEXT: st1b { z6.d }, p3, [z0.d]
+; CHECK-NEXT: st1b { z7.d }, p4, [z0.d]
+; CHECK-NEXT: st1b { z16.d }, p2, [z0.d]
+; CHECK-NEXT: b .LBB0_1
+ br label %1
+
+1: ; preds = %1, %0
+ call void @llvm.masked.scatter.nxv16i8.nxv16p0(<vscale x 16 x i8> zeroinitializer, <vscale x 16 x ptr> zeroinitializer, i32 0, <vscale x 16 x i1> xor (<vscale x 16 x i1> shufflevector (<vscale x 16 x i1> icmp eq (<vscale x 16 x ptr> insertelement (<vscale x 16 x ptr> poison, ptr null, i64 0), <vscale x 16 x ptr> zeroinitializer), <vscale x 16 x i1> poison, <vscale x 16 x i32> zeroinitializer), <vscale x 16 x i1> shufflevector (<vscale x 16 x i1> insertelement (<vscale x 16 x i1> poison, i1 true, i32 0), <vscale x 16 x i1> poison, <vscale x 16 x i32> zeroinitializer)))
+ br label %1
+}
+
+uselistorder <vscale x 16 x i1> poison, { 1, 2, 0 }