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clang-p2996/llvm/test/CodeGen/AMDGPU/use_restore_frame_reg.mir
Christudasan Devadasan f9cd789658 [AMDGPU] Add pseudo instructions for SGPR spill to VGPR (#69923) 
For a future patch, is it important to keep the lowered SGPR
spills to be recognized as spill instructions during regalloc.
Directly lowering them into V_WRITELANE/V_READLANE won't allow
us to attach the SPILL flag to their instructions.

This patch introduces the pseudo instructions with the SGPRSpill
flag set in their Desc. They will get lowered to equivalent
instructions later during post RA pseudo expansion.
2023-10-27 17:24:10 +05:30

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# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-machineinstrs -run-pass=prologepilog %s -o - | FileCheck --check-prefix=MUBUF %s
# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx900 -verify-machineinstrs -run-pass=prologepilog -mattr=+enable-flat-scratch %s -o - | FileCheck --check-prefix=FLATSCR %s
---
name: use_restore_frame_reg
tracksRegLiveness: true
stack:
- { id: 0, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 1, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 2, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 3, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 4, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 5, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 6, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 7, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 8, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 9, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 10, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 11, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 12, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 13, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 14, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 15, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 16, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 17, type: default, offset: 0, size: 4, alignment: 8192 }
- { id: 18, type: default, offset: 0, size: 4, alignment: 8192 }
machineFunctionInfo:
isEntryFunction: false
scratchRSrcReg: $sgpr0_sgpr1_sgpr2_sgpr3
frameOffsetReg: $sgpr33
stackPtrOffsetReg: $sgpr32
body: |
; MUBUF-LABEL: name: use_restore_frame_reg
; MUBUF: bb.0:
; MUBUF-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; MUBUF-NEXT: liveins: $vgpr1, $vgpr2
; MUBUF-NEXT: {{ $}}
; MUBUF-NEXT: $sgpr4 = COPY $sgpr33
; MUBUF-NEXT: $sgpr33 = frame-setup S_ADD_I32 $sgpr32, 524224, implicit-def $scc
; MUBUF-NEXT: $sgpr33 = frame-setup S_AND_B32 killed $sgpr33, 4294443008, implicit-def dead $scc
; MUBUF-NEXT: $sgpr6_sgpr7 = S_XOR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
; MUBUF-NEXT: $sgpr5 = S_ADD_I32 $sgpr33, 9961728, implicit-def dead $scc
; MUBUF-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr2, $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr5, 0, 0, 0, implicit $exec :: (store (s32) into %stack.20, addrspace 5)
; MUBUF-NEXT: $exec = S_MOV_B64 killed $sgpr6_sgpr7
; MUBUF-NEXT: $vgpr2 = SI_SPILL_S32_TO_VGPR $sgpr4, 0, undef $vgpr2
; MUBUF-NEXT: $sgpr32 = frame-setup S_ADD_I32 $sgpr32, 11010048, implicit-def dead $scc
; MUBUF-NEXT: S_CMP_EQ_U32 0, 0, implicit-def $scc
; MUBUF-NEXT: S_NOP 0, implicit-def $sgpr4, implicit-def $sgpr5, implicit-def $sgpr6, implicit-def $sgpr7, implicit-def $sgpr8, implicit-def $sgpr9, implicit-def $sgpr10, implicit-def $sgpr11, implicit-def $sgpr12, implicit-def $sgpr13, implicit-def $sgpr14, implicit-def $sgpr15, implicit-def $sgpr16, implicit-def $sgpr17, implicit-def $sgpr18, implicit-def $sgpr19, implicit-def $sgpr20, implicit-def $sgpr21, implicit-def $sgpr22, implicit-def $sgpr23, implicit-def $sgpr24, implicit-def $sgpr25, implicit-def $sgpr26, implicit-def $sgpr27, implicit-def $sgpr28, implicit-def $sgpr29, implicit-def $sgpr30, implicit-def $sgpr31, implicit-def $vcc
; MUBUF-NEXT: $vgpr0 = V_LSHRREV_B32_e64 6, $sgpr33, implicit $exec
; MUBUF-NEXT: $vgpr0 = V_ADD_U32_e32 8192, killed $vgpr0, implicit $exec
; MUBUF-NEXT: $vgpr3 = V_LSHRREV_B32_e64 6, $sgpr33, implicit $exec
; MUBUF-NEXT: $vgpr3 = V_ADD_U32_e32 155648, killed $vgpr3, implicit $exec
; MUBUF-NEXT: $vgpr0 = V_OR_B32_e32 killed $vgpr3, $vgpr1, implicit $exec, implicit $sgpr4, implicit $sgpr5, implicit $sgpr6, implicit $sgpr7, implicit $sgpr8, implicit $sgpr9, implicit $sgpr10, implicit $sgpr11, implicit $sgpr12, implicit $sgpr13, implicit $sgpr14, implicit $sgpr15, implicit $sgpr16, implicit $sgpr17, implicit $sgpr18, implicit $sgpr19, implicit $sgpr20, implicit $sgpr21, implicit $sgpr22, implicit $sgpr23, implicit $sgpr24, implicit $sgpr25, implicit $sgpr26, implicit $sgpr27, implicit $sgpr28, implicit $sgpr29, implicit $sgpr30, implicit $sgpr31
; MUBUF-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
; MUBUF-NEXT: S_CBRANCH_SCC1 %bb.2, implicit $scc
; MUBUF-NEXT: {{ $}}
; MUBUF-NEXT: bb.1:
; MUBUF-NEXT: successors: %bb.2(0x80000000)
; MUBUF-NEXT: liveins: $vgpr2
; MUBUF-NEXT: {{ $}}
; MUBUF-NEXT: S_NOP 0
; MUBUF-NEXT: {{ $}}
; MUBUF-NEXT: bb.2:
; MUBUF-NEXT: liveins: $vgpr2
; MUBUF-NEXT: {{ $}}
; MUBUF-NEXT: $sgpr4 = SI_RESTORE_S32_FROM_VGPR $vgpr2, 0
; MUBUF-NEXT: $sgpr6_sgpr7 = S_XOR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
; MUBUF-NEXT: $sgpr5 = S_ADD_I32 $sgpr33, 9961728, implicit-def dead $scc
; MUBUF-NEXT: $vgpr2 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr5, 0, 0, 0, implicit $exec :: (load (s32) from %stack.20, addrspace 5)
; MUBUF-NEXT: $exec = S_MOV_B64 killed $sgpr6_sgpr7
; MUBUF-NEXT: $sgpr32 = frame-destroy S_ADD_I32 $sgpr32, -11010048, implicit-def dead $scc
; MUBUF-NEXT: $sgpr33 = COPY $sgpr4
; MUBUF-NEXT: S_ENDPGM 0
;
; FLATSCR-LABEL: name: use_restore_frame_reg
; FLATSCR: bb.0:
; FLATSCR-NEXT: successors: %bb.2(0x40000000), %bb.1(0x40000000)
; FLATSCR-NEXT: liveins: $vgpr1, $vgpr2
; FLATSCR-NEXT: {{ $}}
; FLATSCR-NEXT: $sgpr4 = COPY $sgpr33
; FLATSCR-NEXT: $sgpr33 = frame-setup S_ADD_I32 $sgpr32, 8191, implicit-def $scc
; FLATSCR-NEXT: $sgpr33 = frame-setup S_AND_B32 killed $sgpr33, 4294959104, implicit-def dead $scc
; FLATSCR-NEXT: $sgpr6_sgpr7 = S_XOR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
; FLATSCR-NEXT: $sgpr5 = S_ADD_I32 $sgpr33, 155652, implicit-def dead $scc
; FLATSCR-NEXT: SCRATCH_STORE_DWORD_SADDR $vgpr2, killed $sgpr5, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into %stack.20, addrspace 5)
; FLATSCR-NEXT: $exec = S_MOV_B64 killed $sgpr6_sgpr7
; FLATSCR-NEXT: $vgpr2 = SI_SPILL_S32_TO_VGPR $sgpr4, 0, undef $vgpr2
; FLATSCR-NEXT: $sgpr32 = frame-setup S_ADD_I32 $sgpr32, 172032, implicit-def dead $scc
; FLATSCR-NEXT: S_CMP_EQ_U32 0, 0, implicit-def $scc
; FLATSCR-NEXT: S_NOP 0, implicit-def $sgpr4, implicit-def $sgpr5, implicit-def $sgpr6, implicit-def $sgpr7, implicit-def $sgpr8, implicit-def $sgpr9, implicit-def $sgpr10, implicit-def $sgpr11, implicit-def $sgpr12, implicit-def $sgpr13, implicit-def $sgpr14, implicit-def $sgpr15, implicit-def $sgpr16, implicit-def $sgpr17, implicit-def $sgpr18, implicit-def $sgpr19, implicit-def $sgpr20, implicit-def $sgpr21, implicit-def $sgpr22, implicit-def $sgpr23, implicit-def $sgpr24, implicit-def $sgpr25, implicit-def $sgpr26, implicit-def $sgpr27, implicit-def $sgpr28, implicit-def $sgpr29, implicit-def $sgpr30, implicit-def $sgpr31, implicit-def $vcc
; FLATSCR-NEXT: $sgpr33 = S_ADDC_U32 $sgpr33, 8192, implicit-def $scc, implicit $scc
; FLATSCR-NEXT: S_BITCMP1_B32 $sgpr33, 0, implicit-def $scc
; FLATSCR-NEXT: $sgpr33 = S_BITSET0_B32 0, $sgpr33
; FLATSCR-NEXT: $vgpr0 = V_MOV_B32_e32 $sgpr33, implicit $exec
; FLATSCR-NEXT: $sgpr33 = S_ADDC_U32 $sgpr33, -8192, implicit-def $scc, implicit $scc
; FLATSCR-NEXT: S_BITCMP1_B32 $sgpr33, 0, implicit-def $scc
; FLATSCR-NEXT: $sgpr33 = S_BITSET0_B32 0, $sgpr33
; FLATSCR-NEXT: $sgpr33 = S_ADDC_U32 $sgpr33, 155648, implicit-def $scc, implicit $scc
; FLATSCR-NEXT: S_BITCMP1_B32 $sgpr33, 0, implicit-def $scc
; FLATSCR-NEXT: $sgpr33 = S_BITSET0_B32 0, $sgpr33
; FLATSCR-NEXT: $vgpr0 = V_OR_B32_e32 $sgpr33, $vgpr1, implicit $exec, implicit $sgpr4, implicit $sgpr5, implicit $sgpr6, implicit $sgpr7, implicit $sgpr8, implicit $sgpr9, implicit $sgpr10, implicit $sgpr11, implicit $sgpr12, implicit $sgpr13, implicit $sgpr14, implicit $sgpr15, implicit $sgpr16, implicit $sgpr17, implicit $sgpr18, implicit $sgpr19, implicit $sgpr20, implicit $sgpr21, implicit $sgpr22, implicit $sgpr23, implicit $sgpr24, implicit $sgpr25, implicit $sgpr26, implicit $sgpr27, implicit $sgpr28, implicit $sgpr29, implicit $sgpr30, implicit $sgpr31
; FLATSCR-NEXT: $sgpr33 = S_ADDC_U32 $sgpr33, -155648, implicit-def $scc, implicit $scc
; FLATSCR-NEXT: S_BITCMP1_B32 $sgpr33, 0, implicit-def $scc
; FLATSCR-NEXT: $sgpr33 = S_BITSET0_B32 0, $sgpr33
; FLATSCR-NEXT: S_CBRANCH_VCCNZ %bb.2, implicit $vcc
; FLATSCR-NEXT: S_CBRANCH_SCC1 %bb.2, implicit $scc
; FLATSCR-NEXT: {{ $}}
; FLATSCR-NEXT: bb.1:
; FLATSCR-NEXT: successors: %bb.2(0x80000000)
; FLATSCR-NEXT: liveins: $vgpr2
; FLATSCR-NEXT: {{ $}}
; FLATSCR-NEXT: S_NOP 0
; FLATSCR-NEXT: {{ $}}
; FLATSCR-NEXT: bb.2:
; FLATSCR-NEXT: liveins: $vgpr2
; FLATSCR-NEXT: {{ $}}
; FLATSCR-NEXT: $sgpr4 = SI_RESTORE_S32_FROM_VGPR $vgpr2, 0
; FLATSCR-NEXT: $sgpr6_sgpr7 = S_XOR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
; FLATSCR-NEXT: $sgpr5 = S_ADD_I32 $sgpr33, 155652, implicit-def dead $scc
; FLATSCR-NEXT: $vgpr2 = SCRATCH_LOAD_DWORD_SADDR killed $sgpr5, 0, 0, implicit $exec, implicit $flat_scr :: (load (s32) from %stack.20, addrspace 5)
; FLATSCR-NEXT: $exec = S_MOV_B64 killed $sgpr6_sgpr7
; FLATSCR-NEXT: $sgpr32 = frame-destroy S_ADD_I32 $sgpr32, -172032, implicit-def dead $scc
; FLATSCR-NEXT: $sgpr33 = COPY $sgpr4
; FLATSCR-NEXT: S_ENDPGM 0
bb.0:
liveins: $vgpr1
S_CMP_EQ_U32 0, 0, implicit-def $scc
S_NOP 0, implicit-def $sgpr4, implicit-def $sgpr5, implicit-def $sgpr6, implicit-def $sgpr7, implicit-def $sgpr8, implicit-def $sgpr9, implicit-def $sgpr10, implicit-def $sgpr11, implicit-def $sgpr12, implicit-def $sgpr13, implicit-def $sgpr14, implicit-def $sgpr15, implicit-def $sgpr16, implicit-def $sgpr17, implicit-def $sgpr18, implicit-def $sgpr19, implicit-def $sgpr20, implicit-def $sgpr21, implicit-def $sgpr22, implicit-def $sgpr23, implicit-def $sgpr24, implicit-def $sgpr25, implicit-def $sgpr26, implicit-def $sgpr27, implicit-def $sgpr28, implicit-def $sgpr29, implicit-def $sgpr30, implicit-def $sgpr31, implicit-def $vcc
$vgpr0 = V_MOV_B32_e32 %stack.0, implicit $exec
$vgpr0 = V_OR_B32_e32 %stack.18, $vgpr1, implicit $exec, implicit $sgpr4, implicit $sgpr5, implicit $sgpr6, implicit $sgpr7, implicit $sgpr8, implicit $sgpr9, implicit $sgpr10, implicit $sgpr11, implicit $sgpr12, implicit $sgpr13, implicit $sgpr14, implicit $sgpr15, implicit $sgpr16, implicit $sgpr17, implicit $sgpr18, implicit $sgpr19, implicit $sgpr20, implicit $sgpr21, implicit $sgpr22, implicit $sgpr23, implicit $sgpr24, implicit $sgpr25, implicit $sgpr26, implicit $sgpr27, implicit $sgpr28, implicit $sgpr29, implicit $sgpr30, implicit $sgpr31
S_CBRANCH_VCCNZ %bb.2, implicit $vcc
S_CBRANCH_SCC1 %bb.2, implicit $scc
bb.1:
S_NOP 0
bb.2:
S_ENDPGM 0
...
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