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llvm-project/llvm/test/CodeGen/MIR/AMDGPU/machine-function-info-no-ir...

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MIR: Allow targets to serialize MachineFunctionInfo This has been a very painful missing feature that has made producing reduced testcases difficult. In particular the various registers determined for stack access during function lowering were necessary to avoid undefined register errors in a large percentage of cases. Implement a subset of the important fields that need to be preserved for AMDGPU. Most of the changes are to support targets parsing register fields and properly reporting errors. The biggest sort-of bug remaining is for fields that can be initialized from the IR section will be overwritten by a default initialized machineFunctionInfo section. Another remaining bug is the machineFunctionInfo section is still printed even if empty. llvm-svn: 356215
2019-03-15 06:54:43 +08:00
# RUN: llc -mtriple=amdgcn-amd-amdhsa -run-pass=none -verify-machineinstrs %s -o - | FileCheck -check-prefixes=FULL,ALL %s
# RUN: llc -mtriple=amdgcn-amd-amdhsa -run-pass=none -simplify-mir -verify-machineinstrs %s -o - | FileCheck -check-prefixes=SIMPLE,ALL %s
---
# ALL-LABEL: name: kernel0
# FULL: machineFunctionInfo:
# FULL-NEXT: explicitKernArgSize: 128
# FULL-NEXT: maxKernArgAlign: 64
# FULL-NEXT: ldsSize: 2048
# FULL-NEXT: isEntryFunction: true
# FULL-NEXT: noSignedZerosFPMath: false
# FULL-NEXT: memoryBound: true
# FULL-NEXT: waveLimiter: true
# FULL-NEXT: scratchRSrcReg: '$sgpr8_sgpr9_sgpr10_sgpr11'
# FULL-NEXT: scratchWaveOffsetReg: '$sgpr12'
# FULL-NEXT: frameOffsetReg: '$sgpr12'
# FULL-NEXT: stackPtrOffsetReg: '$sgpr13'
# FULL-NEXT: body:
# SIMPLE: machineFunctionInfo:
# SIMPLE-NEXT: explicitKernArgSize: 128
# SIMPLE-NEXT: maxKernArgAlign: 64
# SIMPLE-NEXT: ldsSize: 2048
# SIMPLE-NEXT: isEntryFunction: true
# SIMPLE-NEXT: memoryBound: true
# SIMPLE-NEXT: waveLimiter: true
# SIMPLE-NEXT: scratchRSrcReg: '$sgpr8_sgpr9_sgpr10_sgpr11'
# SIMPLE-NEXT: scratchWaveOffsetReg: '$sgpr12'
# SIMPLE-NEXT: frameOffsetReg: '$sgpr12'
# SIMPLE-NEXT: stackPtrOffsetReg: '$sgpr13'
# SIMPLE-NEXT: body:
name: kernel0
machineFunctionInfo:
explicitKernArgSize: 128
maxKernArgAlign: 64
ldsSize: 2048
isEntryFunction: true
noSignedZerosFPMath: false
memoryBound: true
waveLimiter: true
scratchRSrcReg: '$sgpr8_sgpr9_sgpr10_sgpr11'
scratchWaveOffsetReg: '$sgpr12'
frameOffsetReg: '$sgpr12'
stackPtrOffsetReg: '$sgpr13'
body: |
bb.0:
S_ENDPGM 0
...
# FIXME: Should be able to not print section for simple
---
# ALL-LABEL: name: no_mfi
# FULL: machineFunctionInfo:
# FULL-NEXT: explicitKernArgSize: 0
# FULL-NEXT: maxKernArgAlign: 0
# FULL-NEXT: ldsSize: 0
# FULL-NEXT: isEntryFunction: false
# FULL-NEXT: noSignedZerosFPMath: false
# FULL-NEXT: memoryBound: false
# FULL-NEXT: waveLimiter: false
# FULL-NEXT: scratchRSrcReg: '$private_rsrc_reg'
# FULL-NEXT: scratchWaveOffsetReg: '$scratch_wave_offset_reg'
# FULL-NEXT: frameOffsetReg: '$fp_reg'
# FULL-NEXT: stackPtrOffsetReg: '$sp_reg'
# SIMPLE: machineFunctionInfo:
# SIMPLE-NEXT: body:
name: no_mfi
body: |
bb.0:
S_ENDPGM 0
...
---
# ALL-LABEL: name: empty_mfi
# FULL: machineFunctionInfo:
# FULL-NEXT: explicitKernArgSize: 0
# FULL-NEXT: maxKernArgAlign: 0
# FULL-NEXT: ldsSize: 0
# FULL-NEXT: isEntryFunction: false
# FULL-NEXT: noSignedZerosFPMath: false
# FULL-NEXT: memoryBound: false
# FULL-NEXT: waveLimiter: false
# FULL-NEXT: scratchRSrcReg: '$private_rsrc_reg'
# FULL-NEXT: scratchWaveOffsetReg: '$scratch_wave_offset_reg'
# FULL-NEXT: frameOffsetReg: '$fp_reg'
# FULL-NEXT: stackPtrOffsetReg: '$sp_reg'
# SIMPLE: machineFunctionInfo:
# SIMPLE-NEXT: body:
name: empty_mfi
machineFunctionInfo:
body: |
bb.0:
S_ENDPGM 0
...
---
# ALL-LABEL: name: empty_mfi_entry_func
# FULL: machineFunctionInfo:
# FULL-NEXT: explicitKernArgSize: 0
# FULL-NEXT: maxKernArgAlign: 0
# FULL-NEXT: ldsSize: 0
# FULL-NEXT: isEntryFunction: true
# FULL-NEXT: noSignedZerosFPMath: false
# FULL-NEXT: memoryBound: false
# FULL-NEXT: waveLimiter: false
# FULL-NEXT: scratchRSrcReg: '$private_rsrc_reg'
# FULL-NEXT: scratchWaveOffsetReg: '$scratch_wave_offset_reg'
# FULL-NEXT: frameOffsetReg: '$fp_reg'
# FULL-NEXT: stackPtrOffsetReg: '$sp_reg'
# SIMPLE: machineFunctionInfo:
# SIMPLE-NEXT: isEntryFunction: true
# SIMPLE-NEXT: body:
name: empty_mfi_entry_func
machineFunctionInfo:
isEntryFunction: true
body: |
bb.0:
S_ENDPGM 0
...
---
# ALL-LABEL: name: default_regs_mfi
# FULL: scratchRSrcReg: '$private_rsrc_reg'
# FULL-NEXT: scratchWaveOffsetReg: '$scratch_wave_offset_reg'
# FULL-NEXT: frameOffsetReg: '$fp_reg'
# FULL-NEXT: stackPtrOffsetReg: '$sp_reg'
# SIMPLE-NOT: scratchRSrcReg
# SIMPLE-NOT: scratchWaveOffsetReg
# SIMPLE-NOT:: stackPtrOffsetReg
name: default_regs_mfi
machineFunctionInfo:
scratchRSrcReg: '$private_rsrc_reg'
body: |
bb.0:
S_ENDPGM 0
...