[AMDGPU] Correctly set IsKill flag for VGPR spills in the prolog

[cdevadas]

Summary

We always assume the vector register is dead or killed while
inserting the VGPR spills in the prolog. It is not always
true. Used the entry block liveIn data while setting the flag.

[foad]

llvm/test/CodeGen/AMDGPU/track-spilled-vgpr-liveness.mir

2

Can you precommit this test so we can see the diff?

[cdevadas]

llvm/test/CodeGen/AMDGPU/track-spilled-vgpr-liveness.mir

2

Prior to this patch, the test would end up with a verifier error complaining undefined register used.
It is because we unconditionally mark 'killed' for the register in the prolog spill and the use following that will be flagged by the verifier.

[cdevadas]

Remove the spilled register from LiveRegs only when IsKill is true.

[cdevadas]

Fixed the title and summary to avoid the use of "custom" while refering PrologEpilog spills.

[cdevadas]

code rebase

llvm/lib/Target/AMDGPU/SIFrameLowering.cpp

unsigned Opc = ST.enableFlatScratch() ? AMDGPU::SCRATCH_STORE_DWORD_SADDR
                                         : AMDGPU::BUFFER_STORE_DWORD_OFFSET;
 
   MachineFrameInfo &FrameInfo = MF.getFrameInfo();
   MachinePointerInfo PtrInfo = MachinePointerInfo::getFixedStack(MF, FI);
   MachineMemOperand *MMO = MF.getMachineMemOperand(
       PtrInfo, MachineMemOperand::MOStore, FrameInfo.getObjectSize(FI),
       FrameInfo.getObjectAlign(FI));
   LiveRegs.addReg(SpillReg);
-  TRI.buildSpillLoadStore(MBB, I, DL, Opc, FI, SpillReg, true,
+  bool IsKill = !MBB.isLiveIn(SpillReg);
+  TRI.buildSpillLoadStore(MBB, I, DL, Opc, FI, SpillReg, IsKill,
                           FuncInfo.getStackPtrOffsetReg(), 0, MMO, nullptr,
                           &LiveRegs);
+  if (IsKill)
     LiveRegs.removeReg(SpillReg);
 }
 
 static void buildEpilogRestore(const GCNSubtarget &ST,
                                const SIRegisterInfo &TRI,
                                const SIMachineFunctionInfo &FuncInfo,
                                LivePhysRegs &LiveRegs, MachineFunction &MF,
                                MachineBasicBlock &MBB,
                                MachineBasicBlock::iterator I,

llvm/test/CodeGen/AMDGPU/av_spill_cross_bb_usage.mir

machineFunctionInfo:
   stackPtrOffsetReg: '$sgpr32'
 body:             |
   ; GCN-LABEL: name: test_av_spill_cross_bb_usage
   ; GCN: bb.0:
   ; GCN-NEXT:   successors: %bb.2(0x40000000), %bb.1(0x40000000)
   ; GCN-NEXT:   liveins: $sgpr30, $sgpr31, $vgpr0, $vgpr1, $vgpr2, $vgpr3, $vgpr4, $vgpr5, $vgpr6, $vgpr7, $vgpr8, $vgpr9, $vgpr10, $vgpr11, $vgpr12, $vgpr13, $vgpr14, $vgpr15, $vgpr40, $vgpr41, $vgpr42, $vgpr43, $vgpr44, $vgpr45, $vgpr46, $vgpr56, $vgpr57, $vgpr58, $vgpr59, $vgpr60, $vgpr61, $sgpr30_sgpr31
   ; GCN-NEXT: {{  $}}
   ; GCN-NEXT:   $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
-  ; GCN-NEXT:   BUFFER_STORE_DWORD_OFFSET killed $vgpr40, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 68, 0, 0, 0, implicit $exec :: (store (s32) into %stack.3, addrspace 5)
+  ; GCN-NEXT:   BUFFER_STORE_DWORD_OFFSET $vgpr40, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 68, 0, 0, 0, implicit $exec :: (store (s32) into %stack.3, addrspace 5)
   ; GCN-NEXT:   $exec = S_MOV_B64 killed $sgpr4_sgpr5
   ; GCN-NEXT:   BUFFER_STORE_DWORD_OFFSET killed $vgpr41, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 44, 0, 0, 0, implicit $exec :: (store (s32) into %stack.4, addrspace 5)
   ; GCN-NEXT:   BUFFER_STORE_DWORD_OFFSET killed $vgpr42, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 40, 0, 0, 0, implicit $exec :: (store (s32) into %stack.5, addrspace 5)
   ; GCN-NEXT:   BUFFER_STORE_DWORD_OFFSET killed $vgpr43, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 36, 0, 0, 0, implicit $exec :: (store (s32) into %stack.6, addrspace 5)
   ; GCN-NEXT:   BUFFER_STORE_DWORD_OFFSET killed $vgpr44, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 32, 0, 0, 0, implicit $exec :: (store (s32) into %stack.7, addrspace 5)
   ; GCN-NEXT:   BUFFER_STORE_DWORD_OFFSET killed $vgpr45, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 28, 0, 0, 0, implicit $exec :: (store (s32) into %stack.8, addrspace 5)
   ; GCN-NEXT:   BUFFER_STORE_DWORD_OFFSET killed $vgpr46, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 24, 0, 0, 0, implicit $exec :: (store (s32) into %stack.9, addrspace 5)
   ; GCN-NEXT:   BUFFER_STORE_DWORD_OFFSET killed $vgpr56, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 20, 0, 0, 0, implicit $exec :: (store (s32) into %stack.10, addrspace 5)

llvm/test/CodeGen/AMDGPU/csr-sgpr-spill-live-ins.mir

machineFunctionInfo:
   stackPtrOffsetReg: $sgpr32
 body: |
   ; CHECK-LABEL: name: def_csr_sgpr
   ; CHECK: bb.0:
   ; CHECK-NEXT:   successors: %bb.1(0x80000000)
   ; CHECK-NEXT:   liveins: $sgpr42, $sgpr43, $sgpr46, $sgpr47, $vgpr0
   ; CHECK-NEXT: {{  $}}
   ; CHECK-NEXT:   $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
-  ; CHECK-NEXT:   BUFFER_STORE_DWORD_OFFSET killed $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.4, addrspace 5)
+  ; CHECK-NEXT:   BUFFER_STORE_DWORD_OFFSET $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.4, addrspace 5)
   ; CHECK-NEXT:   $exec = S_MOV_B64 killed $sgpr4_sgpr5
   ; CHECK-NEXT:   $vgpr0 = V_WRITELANE_B32 $sgpr42, 0, $vgpr0
   ; CHECK-NEXT:   $vgpr0 = V_WRITELANE_B32 $sgpr43, 1, $vgpr0
   ; CHECK-NEXT:   $vgpr0 = V_WRITELANE_B32 $sgpr46, 2, $vgpr0
   ; CHECK-NEXT:   $vgpr0 = V_WRITELANE_B32 $sgpr47, 3, $vgpr0
   ; CHECK-NEXT:   S_NOP 0
   ; CHECK-NEXT: {{  $}}
   ; CHECK-NEXT: bb.1:

llvm/test/CodeGen/AMDGPU/pei-scavenge-sgpr-carry-out.mir

body:             |
   bb.0:
     liveins: $vgpr1
 
     ; CHECK-LABEL: name: scavenge_sgpr_pei_no_sgprs
     ; CHECK: liveins: $vgpr1, $vgpr2
     ; CHECK-NEXT: {{  $}}
     ; CHECK-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
     ; CHECK-NEXT: $sgpr6 = S_ADD_I32 $sgpr32, 1048832, implicit-def dead $scc
-    ; CHECK-NEXT: BUFFER_STORE_DWORD_OFFSET killed $vgpr2, $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.3, addrspace 5)
+    ; CHECK-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr2, $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.3, addrspace 5)
     ; CHECK-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
     ; CHECK-NEXT: $vgpr2 = V_WRITELANE_B32 $sgpr33, 0, undef $vgpr2
     ; CHECK-NEXT: $sgpr33 = frame-setup S_ADD_I32 $sgpr32, 524224, implicit-def $scc
     ; CHECK-NEXT: $sgpr33 = frame-setup S_AND_B32 killed $sgpr33, 4294443008, implicit-def dead $scc
     ; CHECK-NEXT: $sgpr32 = frame-setup S_ADD_I32 $sgpr32, 2097152, implicit-def dead $scc
     ; CHECK-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
     ; CHECK-NEXT: $sgpr33 = S_LSHR_B32 $sgpr33, 6, implicit-def $scc
     ; CHECK-NEXT: $sgpr33 = S_ADD_I32 killed $sgpr33, 8192, implicit-def $scc

llvm/test/CodeGen/AMDGPU/pei-scavenge-sgpr-gfx9.mir

body:             |
   bb.0:
     liveins: $vgpr1
 
     ; MUBUF-LABEL: name: scavenge_sgpr_pei_no_sgprs
     ; MUBUF: liveins: $vgpr1, $vgpr2
     ; MUBUF-NEXT: {{  $}}
     ; MUBUF-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
     ; MUBUF-NEXT: $sgpr6 = S_ADD_I32 $sgpr32, 1048832, implicit-def dead $scc
-    ; MUBUF-NEXT: BUFFER_STORE_DWORD_OFFSET killed $vgpr2, $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.3, addrspace 5)
+    ; MUBUF-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr2, $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.3, addrspace 5)
     ; MUBUF-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
     ; MUBUF-NEXT: $vgpr2 = V_WRITELANE_B32 $sgpr33, 0, undef $vgpr2
     ; 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: $sgpr32 = frame-setup S_ADD_I32 $sgpr32, 2097152, implicit-def dead $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 16384, 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: $sgpr32 = frame-destroy S_ADD_I32 $sgpr32, -2097152, implicit-def dead $scc
     ; MUBUF-NEXT: $sgpr33 = V_READLANE_B32 $vgpr2, 0
     ; MUBUF-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
     ; MUBUF-NEXT: $sgpr6 = S_ADD_I32 $sgpr32, 1048832, implicit-def dead $scc
     ; MUBUF-NEXT: $vgpr2 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, 0, implicit $exec :: (load (s32) from %stack.3, addrspace 5)
     ; MUBUF-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
     ; MUBUF-NEXT: S_ENDPGM 0, implicit $vcc
     ; FLATSCR-LABEL: name: scavenge_sgpr_pei_no_sgprs
     ; FLATSCR: liveins: $vgpr1, $vgpr2
     ; FLATSCR-NEXT: {{  $}}
     ; FLATSCR-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
     ; FLATSCR-NEXT: $sgpr6 = S_ADD_I32 $sgpr32, 16388, implicit-def dead $scc
-    ; FLATSCR-NEXT: SCRATCH_STORE_DWORD_SADDR killed $vgpr2, killed $sgpr6, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into %stack.3, addrspace 5)
+    ; FLATSCR-NEXT: SCRATCH_STORE_DWORD_SADDR $vgpr2, killed $sgpr6, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into %stack.3, addrspace 5)
     ; FLATSCR-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
     ; FLATSCR-NEXT: $vgpr2 = V_WRITELANE_B32 $sgpr33, 0, undef $vgpr2
     ; 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: $sgpr32 = frame-setup S_ADD_I32 $sgpr32, 32768, implicit-def dead $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_ADD_I32 $sgpr33, 8192, implicit-def $scc
     ; FLATSCR-NEXT: $vgpr0 = V_MOV_B32_e32 $sgpr33, implicit $exec

llvm/test/CodeGen/AMDGPU/pei-scavenge-sgpr.mir

body:             |
   bb.0:
     liveins: $vgpr1
 
     ; CHECK-LABEL: name: scavenge_sgpr_pei
     ; CHECK: liveins: $vgpr1, $vgpr2
     ; CHECK-NEXT: {{  $}}
     ; CHECK-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
     ; CHECK-NEXT: $sgpr6 = S_ADD_I32 $sgpr32, 262400, implicit-def dead $scc
-    ; CHECK-NEXT: BUFFER_STORE_DWORD_OFFSET killed $vgpr2, $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.2, addrspace 5)
+    ; CHECK-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr2, $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.2, addrspace 5)
     ; CHECK-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
     ; CHECK-NEXT: $vgpr2 = V_WRITELANE_B32 $sgpr33, 0, undef $vgpr2
     ; CHECK-NEXT: $sgpr33 = frame-setup S_ADD_I32 $sgpr32, 262080, implicit-def $scc
     ; CHECK-NEXT: $sgpr33 = frame-setup S_AND_B32 killed $sgpr33, 4294705152, implicit-def dead $scc
     ; CHECK-NEXT: $sgpr32 = frame-setup S_ADD_I32 $sgpr32, 786432, implicit-def dead $scc
     ; CHECK-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
     ; CHECK-NEXT: $sgpr33 = S_LSHR_B32 $sgpr33, 6, implicit-def $scc
     ; CHECK-NEXT: $sgpr33 = S_ADD_I32 killed $sgpr33, 4096, implicit-def $scc

llvm/test/CodeGen/AMDGPU/pei-scavenge-vgpr-spill.mir

body:             |
   bb.0:
     liveins: $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15, $vgpr16_vgpr17_vgpr18_vgpr19_vgpr20_vgpr21_vgpr22_vgpr23_vgpr24_vgpr25_vgpr26_vgpr27_vgpr28_vgpr29_vgpr30_vgpr31, $vgpr32_vgpr33_vgpr34_vgpr35_vgpr36_vgpr37_vgpr38_vgpr39_vgpr40_vgpr41_vgpr42_vgpr43_vgpr44_vgpr45_vgpr46_vgpr47, $vgpr48_vgpr49_vgpr50_vgpr51_vgpr52_vgpr53_vgpr54_vgpr55_vgpr56_vgpr57_vgpr58_vgpr59_vgpr60_vgpr61_vgpr62_vgpr63, $vgpr64_vgpr65_vgpr66_vgpr67_vgpr68_vgpr69_vgpr70_vgpr71_vgpr72_vgpr73_vgpr74_vgpr75_vgpr76_vgpr77_vgpr78_vgpr79, $vgpr80_vgpr81_vgpr82_vgpr83_vgpr84_vgpr85_vgpr86_vgpr87_vgpr88_vgpr89_vgpr90_vgpr91_vgpr92_vgpr93_vgpr94_vgpr95, $vgpr96_vgpr97_vgpr98_vgpr99_vgpr100_vgpr101_vgpr102_vgpr103_vgpr104_vgpr105_vgpr106_vgpr107_vgpr108_vgpr109_vgpr110_vgpr111, $vgpr112_vgpr113_vgpr114_vgpr115_vgpr116_vgpr117_vgpr118_vgpr119_vgpr120_vgpr121_vgpr122_vgpr123_vgpr124_vgpr125_vgpr126_vgpr127, $vgpr128_vgpr129_vgpr130_vgpr131_vgpr132_vgpr133_vgpr134_vgpr135_vgpr136_vgpr137_vgpr138_vgpr139_vgpr140_vgpr141_vgpr142_vgpr143, $vgpr144_vgpr145_vgpr146_vgpr147_vgpr148_vgpr149_vgpr150_vgpr151_vgpr152_vgpr153_vgpr154_vgpr155_vgpr156_vgpr157_vgpr158_vgpr159, $vgpr160_vgpr161_vgpr162_vgpr163_vgpr164_vgpr165_vgpr166_vgpr167_vgpr168_vgpr169_vgpr170_vgpr171_vgpr172_vgpr173_vgpr174_vgpr175, $vgpr176_vgpr177_vgpr178_vgpr179_vgpr180_vgpr181_vgpr182_vgpr183_vgpr184_vgpr185_vgpr186_vgpr187_vgpr188_vgpr189_vgpr190_vgpr191, $vgpr192_vgpr193_vgpr194_vgpr195_vgpr196_vgpr197_vgpr198_vgpr199_vgpr200_vgpr201_vgpr202_vgpr203_vgpr204_vgpr205_vgpr206_vgpr207, $vgpr208_vgpr209_vgpr210_vgpr211_vgpr212_vgpr213_vgpr214_vgpr215_vgpr216_vgpr217_vgpr218_vgpr219_vgpr220_vgpr221_vgpr222_vgpr223, $vgpr224_vgpr225_vgpr226_vgpr227_vgpr228_vgpr229_vgpr230_vgpr231_vgpr232_vgpr233_vgpr234_vgpr235_vgpr236_vgpr237_vgpr238_vgpr239, $vgpr240_vgpr241_vgpr242_vgpr243_vgpr244_vgpr245_vgpr246_vgpr247, $vgpr248_vgpr249_vgpr250_vgpr251, $vgpr252_vgpr253_vgpr254_vgpr255
 
     ; GFX8-LABEL: name: pei_scavenge_vgpr_spill
     ; GFX8: liveins: $vgpr248_vgpr249_vgpr250_vgpr251, $vgpr252_vgpr253_vgpr254_vgpr255, $vgpr240_vgpr241_vgpr242_vgpr243_vgpr244_vgpr245_vgpr246_vgpr247, $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15, $vgpr16_vgpr17_vgpr18_vgpr19_vgpr20_vgpr21_vgpr22_vgpr23_vgpr24_vgpr25_vgpr26_vgpr27_vgpr28_vgpr29_vgpr30_vgpr31, $vgpr32_vgpr33_vgpr34_vgpr35_vgpr36_vgpr37_vgpr38_vgpr39_vgpr40_vgpr41_vgpr42_vgpr43_vgpr44_vgpr45_vgpr46_vgpr47, $vgpr48_vgpr49_vgpr50_vgpr51_vgpr52_vgpr53_vgpr54_vgpr55_vgpr56_vgpr57_vgpr58_vgpr59_vgpr60_vgpr61_vgpr62_vgpr63, $vgpr64_vgpr65_vgpr66_vgpr67_vgpr68_vgpr69_vgpr70_vgpr71_vgpr72_vgpr73_vgpr74_vgpr75_vgpr76_vgpr77_vgpr78_vgpr79, $vgpr80_vgpr81_vgpr82_vgpr83_vgpr84_vgpr85_vgpr86_vgpr87_vgpr88_vgpr89_vgpr90_vgpr91_vgpr92_vgpr93_vgpr94_vgpr95, $vgpr96_vgpr97_vgpr98_vgpr99_vgpr100_vgpr101_vgpr102_vgpr103_vgpr104_vgpr105_vgpr106_vgpr107_vgpr108_vgpr109_vgpr110_vgpr111, $vgpr112_vgpr113_vgpr114_vgpr115_vgpr116_vgpr117_vgpr118_vgpr119_vgpr120_vgpr121_vgpr122_vgpr123_vgpr124_vgpr125_vgpr126_vgpr127, $vgpr128_vgpr129_vgpr130_vgpr131_vgpr132_vgpr133_vgpr134_vgpr135_vgpr136_vgpr137_vgpr138_vgpr139_vgpr140_vgpr141_vgpr142_vgpr143, $vgpr144_vgpr145_vgpr146_vgpr147_vgpr148_vgpr149_vgpr150_vgpr151_vgpr152_vgpr153_vgpr154_vgpr155_vgpr156_vgpr157_vgpr158_vgpr159, $vgpr160_vgpr161_vgpr162_vgpr163_vgpr164_vgpr165_vgpr166_vgpr167_vgpr168_vgpr169_vgpr170_vgpr171_vgpr172_vgpr173_vgpr174_vgpr175, $vgpr176_vgpr177_vgpr178_vgpr179_vgpr180_vgpr181_vgpr182_vgpr183_vgpr184_vgpr185_vgpr186_vgpr187_vgpr188_vgpr189_vgpr190_vgpr191, $vgpr192_vgpr193_vgpr194_vgpr195_vgpr196_vgpr197_vgpr198_vgpr199_vgpr200_vgpr201_vgpr202_vgpr203_vgpr204_vgpr205_vgpr206_vgpr207, $vgpr208_vgpr209_vgpr210_vgpr211_vgpr212_vgpr213_vgpr214_vgpr215_vgpr216_vgpr217_vgpr218_vgpr219_vgpr220_vgpr221_vgpr222_vgpr223, $vgpr224_vgpr225_vgpr226_vgpr227_vgpr228_vgpr229_vgpr230_vgpr231_vgpr232_vgpr233_vgpr234_vgpr235_vgpr236_vgpr237_vgpr238_vgpr239, $vgpr2
     ; GFX8-NEXT: {{  $}}
     ; GFX8-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
     ; GFX8-NEXT: $sgpr6 = S_ADD_I32 $sgpr32, 1048832, implicit-def dead $scc
-    ; GFX8-NEXT: BUFFER_STORE_DWORD_OFFSET killed $vgpr2, $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.3, addrspace 5)
+    ; GFX8-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr2, $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.3, addrspace 5)
     ; GFX8-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
     ; GFX8-NEXT: $vgpr2 = V_WRITELANE_B32 $sgpr33, 0, undef $vgpr2
     ; GFX8-NEXT: $sgpr33 = frame-setup S_ADD_I32 $sgpr32, 524224, implicit-def $scc
     ; GFX8-NEXT: $sgpr33 = frame-setup S_AND_B32 killed $sgpr33, 4294443008, implicit-def dead $scc
     ; GFX8-NEXT: $sgpr32 = frame-setup S_ADD_I32 $sgpr32, 2097152, implicit-def dead $scc
     ; GFX8-NEXT: $vgpr0 = V_LSHRREV_B32_e64 6, $sgpr33, implicit $exec
     ; GFX8-NEXT: $vcc_lo = S_MOV_B32 8192
     ; GFX8-NEXT: $vgpr0, dead $vcc = V_ADD_CO_U32_e64 killed $vcc_lo, killed $vgpr0, 0, implicit $exec
bb.0:
     ; GFX8-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
     ; GFX8-NEXT: $vgpr3 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr33, 0, 0, 0, 0, implicit $exec :: (load (s32) from %stack.4, addrspace 5)
     ; GFX8-NEXT: S_ENDPGM 0, amdgpu_allvgprs
     ; GFX9-LABEL: name: pei_scavenge_vgpr_spill
     ; GFX9: liveins: $vgpr248_vgpr249_vgpr250_vgpr251, $vgpr252_vgpr253_vgpr254_vgpr255, $vgpr240_vgpr241_vgpr242_vgpr243_vgpr244_vgpr245_vgpr246_vgpr247, $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15, $vgpr16_vgpr17_vgpr18_vgpr19_vgpr20_vgpr21_vgpr22_vgpr23_vgpr24_vgpr25_vgpr26_vgpr27_vgpr28_vgpr29_vgpr30_vgpr31, $vgpr32_vgpr33_vgpr34_vgpr35_vgpr36_vgpr37_vgpr38_vgpr39_vgpr40_vgpr41_vgpr42_vgpr43_vgpr44_vgpr45_vgpr46_vgpr47, $vgpr48_vgpr49_vgpr50_vgpr51_vgpr52_vgpr53_vgpr54_vgpr55_vgpr56_vgpr57_vgpr58_vgpr59_vgpr60_vgpr61_vgpr62_vgpr63, $vgpr64_vgpr65_vgpr66_vgpr67_vgpr68_vgpr69_vgpr70_vgpr71_vgpr72_vgpr73_vgpr74_vgpr75_vgpr76_vgpr77_vgpr78_vgpr79, $vgpr80_vgpr81_vgpr82_vgpr83_vgpr84_vgpr85_vgpr86_vgpr87_vgpr88_vgpr89_vgpr90_vgpr91_vgpr92_vgpr93_vgpr94_vgpr95, $vgpr96_vgpr97_vgpr98_vgpr99_vgpr100_vgpr101_vgpr102_vgpr103_vgpr104_vgpr105_vgpr106_vgpr107_vgpr108_vgpr109_vgpr110_vgpr111, $vgpr112_vgpr113_vgpr114_vgpr115_vgpr116_vgpr117_vgpr118_vgpr119_vgpr120_vgpr121_vgpr122_vgpr123_vgpr124_vgpr125_vgpr126_vgpr127, $vgpr128_vgpr129_vgpr130_vgpr131_vgpr132_vgpr133_vgpr134_vgpr135_vgpr136_vgpr137_vgpr138_vgpr139_vgpr140_vgpr141_vgpr142_vgpr143, $vgpr144_vgpr145_vgpr146_vgpr147_vgpr148_vgpr149_vgpr150_vgpr151_vgpr152_vgpr153_vgpr154_vgpr155_vgpr156_vgpr157_vgpr158_vgpr159, $vgpr160_vgpr161_vgpr162_vgpr163_vgpr164_vgpr165_vgpr166_vgpr167_vgpr168_vgpr169_vgpr170_vgpr171_vgpr172_vgpr173_vgpr174_vgpr175, $vgpr176_vgpr177_vgpr178_vgpr179_vgpr180_vgpr181_vgpr182_vgpr183_vgpr184_vgpr185_vgpr186_vgpr187_vgpr188_vgpr189_vgpr190_vgpr191, $vgpr192_vgpr193_vgpr194_vgpr195_vgpr196_vgpr197_vgpr198_vgpr199_vgpr200_vgpr201_vgpr202_vgpr203_vgpr204_vgpr205_vgpr206_vgpr207, $vgpr208_vgpr209_vgpr210_vgpr211_vgpr212_vgpr213_vgpr214_vgpr215_vgpr216_vgpr217_vgpr218_vgpr219_vgpr220_vgpr221_vgpr222_vgpr223, $vgpr224_vgpr225_vgpr226_vgpr227_vgpr228_vgpr229_vgpr230_vgpr231_vgpr232_vgpr233_vgpr234_vgpr235_vgpr236_vgpr237_vgpr238_vgpr239, $vgpr2
     ; GFX9-NEXT: {{  $}}
     ; GFX9-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
     ; GFX9-NEXT: $sgpr6 = S_ADD_I32 $sgpr32, 1048832, implicit-def dead $scc
-    ; GFX9-NEXT: BUFFER_STORE_DWORD_OFFSET killed $vgpr2, $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.3, addrspace 5)
+    ; GFX9-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr2, $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.3, addrspace 5)
     ; GFX9-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
     ; GFX9-NEXT: $vgpr2 = V_WRITELANE_B32 $sgpr33, 0, undef $vgpr2
     ; GFX9-NEXT: $sgpr33 = frame-setup S_ADD_I32 $sgpr32, 524224, implicit-def $scc
     ; GFX9-NEXT: $sgpr33 = frame-setup S_AND_B32 killed $sgpr33, 4294443008, implicit-def dead $scc
     ; GFX9-NEXT: $sgpr32 = frame-setup S_ADD_I32 $sgpr32, 2097152, implicit-def dead $scc
     ; GFX9-NEXT: $vgpr0 = V_LSHRREV_B32_e64 6, $sgpr33, implicit $exec
     ; GFX9-NEXT: $vgpr0 = V_ADD_U32_e32 8192, killed $vgpr0, implicit $exec
     ; GFX9-NEXT: BUFFER_STORE_DWORD_OFFSET killed $vgpr3, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr33, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.4, addrspace 5)
     ; GFX9-NEXT: $vgpr3 = V_LSHRREV_B32_e64 6, $sgpr33, implicit $exec
     ; GFX9-NEXT: $vgpr3 = V_ADD_U32_e32 16384, killed $vgpr3, implicit $exec
     ; GFX9-NEXT: $vgpr0 = V_OR_B32_e32 killed $vgpr3, $vgpr1, implicit $exec
     ; GFX9-NEXT: $sgpr32 = frame-destroy S_ADD_I32 $sgpr32, -2097152, implicit-def dead $scc
     ; GFX9-NEXT: $sgpr33 = V_READLANE_B32 $vgpr2, 0
     ; GFX9-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
     ; GFX9-NEXT: $sgpr6 = S_ADD_I32 $sgpr32, 1048832, implicit-def dead $scc
     ; GFX9-NEXT: $vgpr2 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, 0, implicit $exec :: (load (s32) from %stack.3, addrspace 5)
     ; GFX9-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
     ; GFX9-NEXT: $vgpr3 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr33, 0, 0, 0, 0, implicit $exec :: (load (s32) from %stack.4, addrspace 5)
     ; GFX9-NEXT: S_ENDPGM 0, amdgpu_allvgprs
     ; GFX9-FLATSCR-LABEL: name: pei_scavenge_vgpr_spill
     ; GFX9-FLATSCR: liveins: $vgpr248_vgpr249_vgpr250_vgpr251, $vgpr252_vgpr253_vgpr254_vgpr255, $vgpr240_vgpr241_vgpr242_vgpr243_vgpr244_vgpr245_vgpr246_vgpr247, $vgpr0_vgpr1_vgpr2_vgpr3_vgpr4_vgpr5_vgpr6_vgpr7_vgpr8_vgpr9_vgpr10_vgpr11_vgpr12_vgpr13_vgpr14_vgpr15, $vgpr16_vgpr17_vgpr18_vgpr19_vgpr20_vgpr21_vgpr22_vgpr23_vgpr24_vgpr25_vgpr26_vgpr27_vgpr28_vgpr29_vgpr30_vgpr31, $vgpr32_vgpr33_vgpr34_vgpr35_vgpr36_vgpr37_vgpr38_vgpr39_vgpr40_vgpr41_vgpr42_vgpr43_vgpr44_vgpr45_vgpr46_vgpr47, $vgpr48_vgpr49_vgpr50_vgpr51_vgpr52_vgpr53_vgpr54_vgpr55_vgpr56_vgpr57_vgpr58_vgpr59_vgpr60_vgpr61_vgpr62_vgpr63, $vgpr64_vgpr65_vgpr66_vgpr67_vgpr68_vgpr69_vgpr70_vgpr71_vgpr72_vgpr73_vgpr74_vgpr75_vgpr76_vgpr77_vgpr78_vgpr79, $vgpr80_vgpr81_vgpr82_vgpr83_vgpr84_vgpr85_vgpr86_vgpr87_vgpr88_vgpr89_vgpr90_vgpr91_vgpr92_vgpr93_vgpr94_vgpr95, $vgpr96_vgpr97_vgpr98_vgpr99_vgpr100_vgpr101_vgpr102_vgpr103_vgpr104_vgpr105_vgpr106_vgpr107_vgpr108_vgpr109_vgpr110_vgpr111, $vgpr112_vgpr113_vgpr114_vgpr115_vgpr116_vgpr117_vgpr118_vgpr119_vgpr120_vgpr121_vgpr122_vgpr123_vgpr124_vgpr125_vgpr126_vgpr127, $vgpr128_vgpr129_vgpr130_vgpr131_vgpr132_vgpr133_vgpr134_vgpr135_vgpr136_vgpr137_vgpr138_vgpr139_vgpr140_vgpr141_vgpr142_vgpr143, $vgpr144_vgpr145_vgpr146_vgpr147_vgpr148_vgpr149_vgpr150_vgpr151_vgpr152_vgpr153_vgpr154_vgpr155_vgpr156_vgpr157_vgpr158_vgpr159, $vgpr160_vgpr161_vgpr162_vgpr163_vgpr164_vgpr165_vgpr166_vgpr167_vgpr168_vgpr169_vgpr170_vgpr171_vgpr172_vgpr173_vgpr174_vgpr175, $vgpr176_vgpr177_vgpr178_vgpr179_vgpr180_vgpr181_vgpr182_vgpr183_vgpr184_vgpr185_vgpr186_vgpr187_vgpr188_vgpr189_vgpr190_vgpr191, $vgpr192_vgpr193_vgpr194_vgpr195_vgpr196_vgpr197_vgpr198_vgpr199_vgpr200_vgpr201_vgpr202_vgpr203_vgpr204_vgpr205_vgpr206_vgpr207, $vgpr208_vgpr209_vgpr210_vgpr211_vgpr212_vgpr213_vgpr214_vgpr215_vgpr216_vgpr217_vgpr218_vgpr219_vgpr220_vgpr221_vgpr222_vgpr223, $vgpr224_vgpr225_vgpr226_vgpr227_vgpr228_vgpr229_vgpr230_vgpr231_vgpr232_vgpr233_vgpr234_vgpr235_vgpr236_vgpr237_vgpr238_vgpr239, $vgpr2
     ; GFX9-FLATSCR-NEXT: {{  $}}
     ; GFX9-FLATSCR-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
     ; GFX9-FLATSCR-NEXT: $sgpr6 = S_ADD_I32 $sgpr32, 16388, implicit-def dead $scc
-    ; GFX9-FLATSCR-NEXT: SCRATCH_STORE_DWORD_SADDR killed $vgpr2, killed $sgpr6, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into %stack.3, addrspace 5)
+    ; GFX9-FLATSCR-NEXT: SCRATCH_STORE_DWORD_SADDR $vgpr2, killed $sgpr6, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into %stack.3, addrspace 5)
     ; GFX9-FLATSCR-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
     ; GFX9-FLATSCR-NEXT: $vgpr2 = V_WRITELANE_B32 $sgpr33, 0, undef $vgpr2
     ; GFX9-FLATSCR-NEXT: $sgpr33 = frame-setup S_ADD_I32 $sgpr32, 8191, implicit-def $scc
     ; GFX9-FLATSCR-NEXT: $sgpr33 = frame-setup S_AND_B32 killed $sgpr33, 4294959104, implicit-def dead $scc
     ; GFX9-FLATSCR-NEXT: $sgpr32 = frame-setup S_ADD_I32 $sgpr32, 32768, implicit-def dead $scc
     ; GFX9-FLATSCR-NEXT: $vcc_hi = S_ADD_I32 $sgpr33, 8192, implicit-def $scc
     ; GFX9-FLATSCR-NEXT: $vgpr0 = V_MOV_B32_e32 killed $vcc_hi, implicit $exec
     ; GFX9-FLATSCR-NEXT: $vcc_hi = S_ADD_I32 $sgpr33, 16384, implicit-def $scc

llvm/test/CodeGen/AMDGPU/spill-reg-tuple-super-reg-use.mir

 body:             |
   bb.0:
     liveins: $sgpr0, $sgpr1, $sgpr2, $sgpr3, $sgpr4, $sgpr5, $sgpr6, $sgpr7, $vgpr0, $vgpr1, $vgpr2, $vgpr3
 
     ; GCN-LABEL: name: spill_sgpr128_use_subreg
     ; GCN: liveins: $sgpr0, $sgpr1, $sgpr2, $sgpr3, $sgpr4, $sgpr5, $sgpr6, $sgpr7, $vgpr0, $vgpr1, $vgpr2, $vgpr3
     ; GCN-NEXT: {{  $}}
     ; GCN-NEXT: $sgpr8_sgpr9 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
-    ; GCN-NEXT: BUFFER_STORE_DWORD_OFFSET killed $vgpr0, $sgpr100_sgpr101_sgpr102_sgpr103, $sgpr32, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.1, addrspace 5)
+    ; GCN-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr0, $sgpr100_sgpr101_sgpr102_sgpr103, $sgpr32, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.1, addrspace 5)
     ; GCN-NEXT: $exec = S_MOV_B64 killed $sgpr8_sgpr9
     ; GCN-NEXT: renamable $sgpr1 = COPY $sgpr2
     ; GCN-NEXT: $vgpr0 = V_WRITELANE_B32 $sgpr0, 0, $vgpr0, implicit-def $sgpr0_sgpr1_sgpr2_sgpr3, implicit $sgpr0_sgpr1_sgpr2_sgpr3
     ; GCN-NEXT: $vgpr0 = V_WRITELANE_B32 $sgpr1, 1, $vgpr0, implicit $sgpr0_sgpr1_sgpr2_sgpr3
     ; GCN-NEXT: $vgpr0 = V_WRITELANE_B32 $sgpr2, 2, $vgpr0, implicit $sgpr0_sgpr1_sgpr2_sgpr3
     ; GCN-NEXT: $vgpr0 = V_WRITELANE_B32 $sgpr3, 3, $vgpr0, implicit $sgpr0_sgpr1_sgpr2_sgpr3
     ; GCN-NEXT: renamable $sgpr8 = COPY killed renamable $sgpr1
     ; GCN-NEXT: $sgpr0_sgpr1 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec

 body:             |
   bb.0:
     liveins: $sgpr0, $sgpr1, $sgpr2, $sgpr3, $sgpr4, $sgpr5, $sgpr6, $sgpr7, $vgpr0, $vgpr1, $vgpr2, $vgpr3
 
     ; GCN-LABEL: name: spill_sgpr128_use_kill
     ; GCN: liveins: $sgpr0, $sgpr1, $sgpr2, $sgpr3, $sgpr4, $sgpr5, $sgpr6, $sgpr7, $vgpr0, $vgpr1, $vgpr2, $vgpr3
     ; GCN-NEXT: {{  $}}
     ; GCN-NEXT: $sgpr8_sgpr9 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
-    ; GCN-NEXT: BUFFER_STORE_DWORD_OFFSET killed $vgpr0, $sgpr100_sgpr101_sgpr102_sgpr103, $sgpr32, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.1, addrspace 5)
+    ; GCN-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr0, $sgpr100_sgpr101_sgpr102_sgpr103, $sgpr32, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.1, addrspace 5)
     ; GCN-NEXT: $exec = S_MOV_B64 killed $sgpr8_sgpr9
     ; GCN-NEXT: renamable $sgpr1 = COPY $sgpr2
     ; GCN-NEXT: $vgpr0 = V_WRITELANE_B32 $sgpr0, 0, $vgpr0, implicit-def $sgpr0_sgpr1_sgpr2_sgpr3, implicit $sgpr0_sgpr1_sgpr2_sgpr3
     ; GCN-NEXT: $vgpr0 = V_WRITELANE_B32 $sgpr1, 1, $vgpr0, implicit $sgpr0_sgpr1_sgpr2_sgpr3
     ; GCN-NEXT: $vgpr0 = V_WRITELANE_B32 $sgpr2, 2, $vgpr0, implicit $sgpr0_sgpr1_sgpr2_sgpr3
     ; GCN-NEXT: $vgpr0 = V_WRITELANE_B32 killed $sgpr3, 3, $vgpr0, implicit killed $sgpr0_sgpr1_sgpr2_sgpr3
     ; GCN-NEXT: $sgpr0_sgpr1 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
     ; GCN-NEXT: $vgpr0 = BUFFER_LOAD_DWORD_OFFSET $sgpr100_sgpr101_sgpr102_sgpr103, $sgpr32, 0, 0, 0, 0, implicit $exec :: (load (s32) from %stack.1, addrspace 5)

llvm/test/CodeGen/AMDGPU/track-spilled-vgpr-liveness.mir

+# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
+# RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx906 -run-pass=prologepilog -verify-machineinstrs %s -o - | FileCheck -check-prefix=GCN %s
+
+# VGPR spill code in the prolog sets the `IsKill` flag for the spilled register
+# based on the entry block's livein info.
+
+---
+name:            vgpr_use_after_prolog_spill
+tracksRegLiveness: true
+machineFunctionInfo:
+  scratchRSrcReg:  '$sgpr0_sgpr1_sgpr2_sgpr3'
+  frameOffsetReg:  '$sgpr33'
+  stackPtrOffsetReg: '$sgpr32'
+body:             |
+  bb.0:
+    liveins: $sgpr42, $vgpr0, $sgpr30_sgpr31
+
+    ; GCN-LABEL: name: vgpr_use_after_prolog_spill
+    ; GCN: liveins: $sgpr42, $vgpr0, $sgpr30_sgpr31
+    ; GCN-NEXT: {{  $}}
+    ; GCN-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
+    ; GCN-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.0, addrspace 5)
+    ; GCN-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
+    ; GCN-NEXT: $vgpr0 = V_ADD_U32_e32 8192, killed $vgpr0, implicit $exec
+    ; GCN-NEXT: $vgpr0 = V_WRITELANE_B32 killed $sgpr42, 0, $vgpr0
+    ; GCN-NEXT: S_NOP 0, implicit-def $vgpr0
+    ; GCN-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
+    ; GCN-NEXT: $vgpr0 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec :: (load (s32) from %stack.0, addrspace 5)
+    ; GCN-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
+    ; GCN-NEXT: S_SETPC_B64_return $sgpr30_sgpr31
+    $vgpr0 = V_ADD_U32_e32 8192, killed $vgpr0, implicit $exec
+    $vgpr0 = V_WRITELANE_B32 killed $sgpr42, 0, $vgpr0
+    S_NOP 0, implicit-def $vgpr0
+    S_SETPC_B64_return $sgpr30_sgpr31
+...
+
+---
+name:            livein_vgpr_def_after_prolog_spill
+tracksRegLiveness: true
+machineFunctionInfo:
+  scratchRSrcReg:  '$sgpr0_sgpr1_sgpr2_sgpr3'
+  frameOffsetReg:  '$sgpr33'
+  stackPtrOffsetReg: '$sgpr32'
+body:             |
+  bb.0:
+    liveins: $sgpr42, $vgpr0, $vgpr1, $sgpr30_sgpr31
+
+    ; GCN-LABEL: name: livein_vgpr_def_after_prolog_spill
+    ; GCN: liveins: $sgpr42, $vgpr0, $vgpr1, $sgpr30_sgpr31
+    ; GCN-NEXT: {{  $}}
+    ; GCN-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
+    ; GCN-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.0, addrspace 5)
+    ; GCN-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
+    ; GCN-NEXT: $vgpr0 = V_ADD_U32_e32 8192, killed $vgpr1, implicit $exec
+    ; GCN-NEXT: $vgpr0 = V_WRITELANE_B32 killed $sgpr42, 0, $vgpr0
+    ; GCN-NEXT: S_NOP 0, implicit-def $vgpr0
+    ; GCN-NEXT: $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
+    ; GCN-NEXT: $vgpr0 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec :: (load (s32) from %stack.0, addrspace 5)
+    ; GCN-NEXT: $exec = S_MOV_B64 killed $sgpr4_sgpr5
+    ; GCN-NEXT: S_SETPC_B64_return $sgpr30_sgpr31
+    $vgpr0 = V_ADD_U32_e32 8192, killed $vgpr1, implicit $exec
+    $vgpr0 = V_WRITELANE_B32 killed $sgpr42, 0, $vgpr0
+    S_NOP 0, implicit-def $vgpr0
+    S_SETPC_B64_return $sgpr30_sgpr31
+...
+
+---
+name:            livein_vgpr_not_referred_in_entry_bb
+tracksRegLiveness: true
+machineFunctionInfo:
+  scratchRSrcReg:  '$sgpr0_sgpr1_sgpr2_sgpr3'
+  frameOffsetReg:  '$sgpr33'
+  stackPtrOffsetReg: '$sgpr32'
+body:             |
+  ; GCN-LABEL: name: livein_vgpr_not_referred_in_entry_bb
+  ; GCN: bb.0:
+  ; GCN-NEXT:   successors: %bb.1(0x80000000)
+  ; GCN-NEXT:   liveins: $sgpr42, $vgpr0, $sgpr30_sgpr31
+  ; GCN-NEXT: {{  $}}
+  ; GCN-NEXT:   $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
+  ; GCN-NEXT:   BUFFER_STORE_DWORD_OFFSET $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.0, addrspace 5)
+  ; GCN-NEXT:   $exec = S_MOV_B64 killed $sgpr4_sgpr5
+  ; GCN-NEXT:   S_NOP 0
+  ; GCN-NEXT:   S_BRANCH %bb.1
+  ; GCN-NEXT: {{  $}}
+  ; GCN-NEXT: bb.1:
+  ; GCN-NEXT:   liveins: $sgpr42, $vgpr0, $sgpr30_sgpr31
+  ; GCN-NEXT: {{  $}}
+  ; GCN-NEXT:   $vgpr0 = V_WRITELANE_B32 killed $sgpr42, 0, $vgpr0
+  ; GCN-NEXT:   S_NOP 0, implicit-def $vgpr0
+  ; GCN-NEXT:   $sgpr4_sgpr5 = S_OR_SAVEEXEC_B64 -1, implicit-def $exec, implicit-def dead $scc, implicit $exec
+  ; GCN-NEXT:   $vgpr0 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec :: (load (s32) from %stack.0, addrspace 5)
+  ; GCN-NEXT:   $exec = S_MOV_B64 killed $sgpr4_sgpr5
+  ; GCN-NEXT:   S_SETPC_B64_return $sgpr30_sgpr31
+  bb.0:
+    liveins: $sgpr42, $vgpr0, $sgpr30_sgpr31
+    S_NOP 0
+    S_BRANCH %bb.1
+  bb.1:
+    liveins: $sgpr42, $vgpr0, $sgpr30_sgpr31
+    $vgpr0 = V_WRITELANE_B32 killed $sgpr42, 0, $vgpr0
+    S_NOP 0, implicit-def $vgpr0
+    S_SETPC_B64_return $sgpr30_sgpr31
+...