# REQUIRES: amdgpu-registered-target
# RUN: llc -mtriple=amdgcn --passes='regallocfast<filter=sgpr>,regallocfast<filter=wwm>,regallocfast<filter=vgpr>' --print-pipeline-passes --filetype=null %s | FileCheck %s --check-prefix=PASS
# RUN: not llc -mtriple=amdgcn --passes='regallocfast<filter=bad-filter>' --print-pipeline-passes --filetype=null %s 2>&1 | FileCheck %s --check-prefix=BAD-FILTER

# Test default behavior at -O0: uses fast allocator
# RUN: llc -mtriple=amdgcn -enable-new-pm -O0 -print-pipeline-passes -filetype=null %s 2>&1 | FileCheck %s --check-prefix=DEFAULT-O0

# Test default behavior at -O2: uses greedy allocator
# RUN: llc -mtriple=amdgcn -enable-new-pm -O2 -print-pipeline-passes -filetype=null %s 2>&1 | FileCheck %s --check-prefix=DEFAULT-O2

# Test AMDGPU-specific NPM regalloc options
# RUN: llc -mtriple=amdgcn -enable-new-pm -sgpr-regalloc-npm=fast -wwm-regalloc-npm=fast -vgpr-regalloc-npm=fast -print-pipeline-passes -filetype=null %s 2>&1 | FileCheck %s --check-prefix=NPM-FAST
# RUN: llc -mtriple=amdgcn -enable-new-pm -O3 -sgpr-regalloc-npm=greedy -wwm-regalloc-npm=greedy -vgpr-regalloc-npm=greedy -print-pipeline-passes -filetype=null %s 2>&1 | FileCheck %s --check-prefix=NPM-GREEDY
# RUN: llc -mtriple=amdgcn -enable-new-pm -O3 -sgpr-regalloc-npm=fast -print-pipeline-passes -filetype=null %s 2>&1 | FileCheck %s --check-prefix=NPM-MIXED

# Test error cases for unsupported allocators
# RUN: not llc -mtriple=amdgcn -enable-new-pm -sgpr-regalloc-npm=basic -filetype=null %s 2>&1 | FileCheck %s --check-prefix=ERR-BASIC
# RUN: not llc -mtriple=amdgcn -enable-new-pm -vgpr-regalloc-npm=pbqp -filetype=null %s 2>&1 | FileCheck %s --check-prefix=ERR-PBQP

# Test error when legacy PM options are used with NPM
# RUN: not llc -mtriple=amdgcn -enable-new-pm -sgpr-regalloc=greedy -filetype=null %s 2>&1 | FileCheck %s --check-prefix=ERR-LEGACY

# Test error when generic --regalloc-npm is used with AMDGPU
# RUN: not llc -mtriple=amdgcn -enable-new-pm -regalloc-npm=fast -filetype=null %s 2>&1 | FileCheck %s --check-prefix=ERR-GENERIC

# PASS: regallocfast<filter=sgpr>
# PASS: regallocfast<filter=wwm>
# PASS: regallocfast<filter=vgpr>
# BAD-FILTER: invalid regallocfast register filter 'bad-filter'

# At -O0, default uses fast allocator for all register classes.
# DEFAULT-O0: regallocfast<filter=sgpr
# DEFAULT-O0: regallocfast<filter=wwm
# DEFAULT-O0: regallocfast<filter=vgpr

# At -O2, default uses greedy allocator for all register classes.
# DEFAULT-O2: greedy<sgpr>
# DEFAULT-O2: greedy<wwm>
# DEFAULT-O2: greedy<vgpr>

# NPM-FAST: regallocfast<filter=sgpr
# NPM-FAST: regallocfast<filter=wwm
# NPM-FAST: regallocfast<filter=vgpr

# NPM-GREEDY: greedy<sgpr>
# NPM-GREEDY: greedy<wwm>
# NPM-GREEDY: greedy<vgpr>

# At -O3, default is greedy. With -sgpr-regalloc-npm=fast, SGPR uses fast,
# but WWM and VGPR still use greedy.
# NPM-MIXED: regallocfast<filter=sgpr
# NPM-MIXED: greedy<wwm>
# NPM-MIXED: greedy<vgpr>

# Error messages for unsupported allocators.
# ERR-BASIC: unsupported register allocator 'basic' for SGPR registers
# ERR-PBQP: unsupported register allocator 'pbqp' for VGPR registers

# Error message for legacy PM options with NPM.
# ERR-LEGACY: -sgpr-regalloc, -vgpr-regalloc, and -wwm-regalloc are legacy PM options

# Error message for generic --regalloc-npm with AMDGPU.
# ERR-GENERIC: -regalloc-npm not supported for amdgcn
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name: f
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