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

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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.

Reviewed By: arsenm

Differential Revision: https://reviews.llvm.org/D124194
This commit is contained in:
Christudasan Devadasan 2022-04-17 17:44:39 +05:30
parent af5e5c40ff
commit 5ebe91fcb2
10 changed files with 121 additions and 15 deletions
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6
llvm/lib/Target/AMDGPU/SIFrameLowering.cpp
View File

@ -138,10 +138,12 @@ static void buildPrologSpill(const GCNSubtarget &ST, const SIRegisterInfo &TRI,
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);
LiveRegs.removeReg(SpillReg);
if (IsKill)
LiveRegs.removeReg(SpillReg);
}
static void buildEpilogRestore(const GCNSubtarget &ST,

2
llvm/test/CodeGen/AMDGPU/av_spill_cross_bb_usage.mir
View File

@ -26,7 +26,7 @@ body: |
; 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, implicit $exec :: (store (s32) into %stack.3, addrspace 5)
; GCN-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr40, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 68, 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, 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, implicit $exec :: (store (s32) into %stack.5, addrspace 5)

2
llvm/test/CodeGen/AMDGPU/csr-sgpr-spill-live-ins.mir
View File

@ -17,7 +17,7 @@ body: |
; 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, implicit $exec :: (store (s32) into %stack.4, addrspace 5)
; CHECK-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr0, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 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

2
llvm/test/CodeGen/AMDGPU/pei-scavenge-sgpr-carry-out.mir
View File

@ -31,7 +31,7 @@ body: |
; 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, 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, 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

4
llvm/test/CodeGen/AMDGPU/pei-scavenge-sgpr-gfx9.mir
View File

@ -27,7 +27,7 @@ body: |
; 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, 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, 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
@ -51,7 +51,7 @@ body: |
; 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

2
llvm/test/CodeGen/AMDGPU/pei-scavenge-sgpr.mir
View File

@ -26,7 +26,7 @@ body: |
; 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, 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, 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

6
llvm/test/CodeGen/AMDGPU/pei-scavenge-vgpr-spill.mir
View File

@ -28,7 +28,7 @@ body: |
; 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, 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, 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
@ -53,7 +53,7 @@ body: |
; 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, 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, 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
@ -76,7 +76,7 @@ body: |
; 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

4
llvm/test/CodeGen/AMDGPU/spill-reg-tuple-super-reg-use.mir
View File

@ -23,7 +23,7 @@ body: |
; 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, implicit $exec :: (store (s32) into %stack.1, addrspace 5)
; GCN-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr0, $sgpr100_sgpr101_sgpr102_sgpr103, $sgpr32, 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
@ -60,7 +60,7 @@ body: |
; 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, implicit $exec :: (store (s32) into %stack.1, addrspace 5)
; GCN-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr0, $sgpr100_sgpr101_sgpr102_sgpr103, $sgpr32, 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

104
llvm/test/CodeGen/AMDGPU/track-spilled-vgpr-liveness.mir Normal file
View File

@ -0,0 +1,104 @@
# 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, 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, 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, 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, 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, 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, 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
...

4
llvm/test/CodeGen/AMDGPU/use_restore_frame_reg.mir
View File

@ -41,7 +41,7 @@ body: |
; 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, 9961728, implicit-def dead $scc
; MUBUF-NEXT: BUFFER_STORE_DWORD_OFFSET killed $vgpr2, $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, implicit $exec :: (store (s32) into %stack.20, addrspace 5)
; MUBUF-NEXT: BUFFER_STORE_DWORD_OFFSET $vgpr2, $sgpr0_sgpr1_sgpr2_sgpr3, killed $sgpr6, 0, 0, 0, implicit $exec :: (store (s32) into %stack.20, 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
@ -80,7 +80,7 @@ body: |
; 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, 155652, 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.20, addrspace 5)
; FLATSCR-NEXT: SCRATCH_STORE_DWORD_SADDR $vgpr2, killed $sgpr6, 0, 0, implicit $exec, implicit $flat_scr :: (store (s32) into %stack.20, 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