| # NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py |
| # RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-machineinstrs -stress-regalloc=2 -start-before=greedy -stop-after=virtregmap -o - %s | FileCheck %s |
| |
| # Test that a spill of a copy of m0 is not folded to be a spill of m0 directly. |
| |
| --- |
| |
| name: merge_sgpr_spill_into_copy_from_m0 |
| tracksRegLiveness: true |
| machineFunctionInfo: |
| isEntryFunction: true |
| body: | |
| bb.0: |
| |
| ; CHECK-LABEL: name: merge_sgpr_spill_into_copy_from_m0 |
| ; CHECK: liveins: $vgpr0 |
| ; CHECK-NEXT: {{ $}} |
| ; CHECK-NEXT: S_NOP 0, implicit-def $m0 |
| ; CHECK-NEXT: $sgpr0 = S_MOV_B32 $m0 |
| ; CHECK-NEXT: $vgpr0 = V_WRITELANE_B32 killed $sgpr0, 0, $vgpr0 |
| ; CHECK-NEXT: $sgpr0 = V_READLANE_B32 $vgpr0, 0 |
| ; CHECK-NEXT: S_NOP 0, implicit-def dead renamable $sgpr1, implicit-def dead renamable $sgpr0, implicit killed renamable $sgpr0 |
| ; CHECK-NEXT: $sgpr0 = V_READLANE_B32 $vgpr0, 0 |
| ; CHECK-NEXT: $m0 = S_MOV_B32 killed $sgpr0 |
| ; CHECK-NEXT: S_NOP 0 |
| ; CHECK-NEXT: S_SENDMSG 0, implicit $m0, implicit $exec |
| S_NOP 0, implicit-def $m0 |
| %0:sreg_32 = COPY $m0 |
| S_NOP 0, implicit-def %1:sreg_32, implicit-def %2:sreg_32, implicit %0 |
| $m0 = COPY %0 |
| S_SENDMSG 0, implicit $m0, implicit $exec |
| |
| ... |
| |
| # Test that a reload into a copy of m0 is not folded to be a reload of m0 directly. |
| |
| --- |
| |
| name: reload_sgpr_spill_into_copy_to_m0 |
| tracksRegLiveness: true |
| machineFunctionInfo: |
| isEntryFunction: true |
| body: | |
| bb.0: |
| |
| ; CHECK-LABEL: name: reload_sgpr_spill_into_copy_to_m0 |
| ; CHECK: liveins: $vgpr0 |
| ; CHECK-NEXT: {{ $}} |
| ; CHECK-NEXT: S_NOP 0, implicit-def renamable $sgpr0, implicit-def dead renamable $sgpr1, implicit-def $m0 |
| ; CHECK-NEXT: $vgpr0 = V_WRITELANE_B32 killed $sgpr0, 0, $vgpr0 |
| ; CHECK-NEXT: $sgpr0 = V_READLANE_B32 $vgpr0, 0 |
| ; CHECK-NEXT: S_NOP 0, implicit killed renamable $sgpr0, implicit-def dead renamable $sgpr1, implicit-def dead renamable $sgpr0 |
| ; CHECK-NEXT: $sgpr0 = V_READLANE_B32 $vgpr0, 0 |
| ; CHECK-NEXT: $m0 = S_MOV_B32 killed $sgpr0 |
| ; CHECK-NEXT: S_NOP 0 |
| ; CHECK-NEXT: S_SENDMSG 0, implicit $m0, implicit $exec |
| S_NOP 0, implicit-def %0:sreg_32, implicit-def %1:sreg_32, implicit-def $m0 |
| S_NOP 0, implicit %0, implicit-def %3:sreg_32, implicit-def %4:sreg_32 |
| $m0 = COPY %0 |
| S_SENDMSG 0, implicit $m0, implicit $exec |
| |
| ... |