# RUN: llc -mtriple=hexagon -run-pass=hexagon-widen-stores -verify-machineinstrs %s -o - | FileCheck %s

# Test that store widening correctly handles DoubleRegs operands with subreg
# in S2_addasl_rrri instruction. The widening pass should preserve the subreg
# when creating the widened S4_storerd_rr instruction.

--- |
  define void @test_store_widen_subreg(ptr %base, i64 %idx, i32 %val) {
  entry:
    ret void
  }
...
---
name:            test_store_widen_subreg
tracksRegLiveness: true
body:             |
  ; CHECK-LABEL: name: test_store_widen_subreg
  ; CHECK: S2_addasl_rrri %{{[0-9]+}}, %{{[0-9]+}}.isub_lo, 2
  ; CHECK: S4_storerd_rr %{{[0-9]+}}, %{{[0-9]+}}.isub_lo, 2, %{{[0-9]+}} :: (store (s64), align 64)
  bb.0:
    liveins: $r0, $d1, $r4

    %0:intregs = COPY $r4
    %1:doubleregs = COPY $d1
    %2:intregs = COPY $r0
    %3:intregs = A2_addi %2, 384
    %4:intregs = S2_addasl_rrri %3, %1.isub_lo, 2

  bb.1:
    successors: %bb.1(0x80000000)

    S2_storeri_io %4, 0, %0 :: (store (s32), align 64)
    S2_storeri_io %4, 4, %0 :: (store (s32))
    J2_jump %bb.1, implicit-def dead $pc