| # RUN: llc -mtriple=amdgcn-amd-amdhsa -mcpu=gfx908 -amdgpu-spill-sgpr-to-vgpr=false -verify-machineinstrs -run-pass=si-lower-sgpr-spills,prologepilog -o - %s | FileCheck %s |
| |
| # Check that we allocate 2 emergency stack slots if we're spilling |
| # SGPRs to memory and potentially have an offset larger than fits in |
| # the addressing mode of the memory instructions. |
| |
| # CHECK-LABEL: name: test |
| # CHECK: stack: |
| # CHECK-NEXT: - { id: 0, name: '', type: spill-slot, offset: 8, size: 4, alignment: 4, |
| # CHECK-NEXT: stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| # CHECK-NEXT: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } |
| # CHECK-NEXT: - { id: 1, name: '', type: default, offset: 12, size: 4096, alignment: 4, |
| # CHECK-NEXT: stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| # CHECK-NEXT: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } |
| # CHECK-NEXT: - { id: 2, name: '', type: default, offset: 0, size: 4, alignment: 4, |
| # CHECK-NEXT: stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| # CHECK-NEXT: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } |
| # CHECK-NEXT: - { id: 3, name: '', type: default, offset: 4, size: 4, alignment: 4, |
| # CHECK-NEXT: stack-id: default, callee-saved-register: '', callee-saved-restored: true, |
| # CHECK-NEXT: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } |
| |
| |
| # CHECK: BUFFER_STORE_DWORD_OFFSET killed $vgpr1, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.2, addrspace 5) |
| # CHECK-NEXT: $vgpr1 = V_WRITELANE_B32 killed $sgpr10, 0, undef $vgpr1 |
| # CHECK-NEXT: BUFFER_STORE_DWORD_OFFSET killed $vgpr1, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 8, 0, 0, 0, implicit $exec :: (store (s32) into %stack.0, addrspace 5) |
| # CHECK-NEXT: $vgpr1 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec :: (load (s32) from %stack.2, addrspace 5) |
| |
| |
| # CHECK: BUFFER_STORE_DWORD_OFFSET killed $vgpr1, $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec :: (store (s32) into %stack.2, addrspace 5) |
| # CHECK-NEXT: $vgpr1 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 8, 0, 0, 0, implicit $exec :: (load (s32) from %stack.0, addrspace 5) |
| # CHECK-NEXT: $sgpr10 = V_READLANE_B32 killed $vgpr1, 0 |
| # CHECK-NEXT: $vgpr1 = BUFFER_LOAD_DWORD_OFFSET $sgpr0_sgpr1_sgpr2_sgpr3, $sgpr32, 0, 0, 0, 0, implicit $exec :: (load (s32) from %stack.2, addrspace 5) |
| --- |
| name: test |
| tracksRegLiveness: true |
| frameInfo: |
| maxAlignment: 4 |
| stack: |
| - { id: 0, type: spill-slot, size: 4, alignment: 4, stack-id: sgpr-spill } |
| - { id: 1, size: 4096, alignment: 4 } |
| machineFunctionInfo: |
| isEntryFunction: false |
| scratchRSrcReg: '$sgpr0_sgpr1_sgpr2_sgpr3' |
| stackPtrOffsetReg: '$sgpr32' |
| frameOffsetReg: '$sgpr33' |
| hasSpilledSGPRs: true |
| body: | |
| bb.0: |
| liveins: $sgpr30_sgpr31, $sgpr10, $sgpr11 |
| S_CMP_EQ_U32 0, 0, implicit-def $scc |
| SI_SPILL_S32_SAVE killed $sgpr10, %stack.0, implicit $exec, implicit $sgpr0_sgpr1_sgpr2_sgpr3, implicit $sgpr32 |
| renamable $sgpr10 = SI_SPILL_S32_RESTORE %stack.0, implicit $exec, implicit $sgpr0_sgpr1_sgpr2_sgpr3, implicit $sgpr32 |
| S_SETPC_B64 $sgpr30_sgpr31, implicit $scc |
| ... |