# RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -stress-regalloc=3 -run-pass=greedy,virtregrewriter,stack-slot-coloring -o - %s | FileCheck -check-prefixes=SHARE,GCN %s
# RUN: llc -mtriple=amdgcn-amd-amdhsa -verify-machineinstrs -stress-regalloc=3 -run-pass=greedy,virtregrewriter,stack-slot-coloring -no-stack-slot-sharing -o - %s | FileCheck -check-prefixes=NOSHARE,GCN %s
# -run-pass is used to artifically avoid using split register allocation, which would avoid stressing StackSlotColoring.
# Make sure that stack slot coloring doesn't try to merge frame
# indexes used for SGPR spilling with those that aren't.
# Even when stack slot sharing was disabled, it was still moving the
# FI ID used for an SGPR spill to a normal frame index.
--- |
define void @sgpr_spill_wrong_stack_id(ptr addrspace(1) nocapture readnone %arg, ptr addrspace(1) noalias %arg1) {
bb:
%tmp = load i32, ptr addrspace(1) null, align 4
call void @func(i32 undef)
call void @func(i32 %tmp)
unreachable
}
declare void @func(i32)
...
---
# GCN-LABEL: name: sgpr_spill_wrong_stack_id
# SHARE: stack:
# SHARE: - { id: 0, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
# SHARE: stack-id: default, callee-saved-register: '', callee-saved-restored: true,
# SHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# SHARE: - { id: 1, name: '', type: spill-slot, offset: 0, size: 8, alignment: 4,
# SHARE: stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
# SHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# SHARE: - { id: 2, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
# SHARE: stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
# SHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# SHARE: SI_SPILL_S32_SAVE $sgpr32, %stack.2, implicit $exec, implicit $sgpr32 :: (store (s32) into %stack.2, addrspace 5)
# SHARE: SI_SPILL_V32_SAVE killed $vgpr0, %stack.0, $sgpr32, 0, implicit $exec :: (store (s32) into %stack.0, addrspace 5)
# SHARE: SI_SPILL_S64_SAVE killed renamable $sgpr4_sgpr5, %stack.1, implicit $exec, implicit $sgpr32 :: (store (s64) into %stack.1, align 4, addrspace 5)
# SHARE: renamable $sgpr4_sgpr5 = SI_SPILL_S64_RESTORE %stack.1, implicit $exec, implicit $sgpr32 :: (load (s64) from %stack.1, align 4, addrspace 5)
# SHARE: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr4_sgpr5, @func, csr_amdgpu, implicit undef $vgpr0
# SHARE: $sgpr32 = SI_SPILL_S32_RESTORE %stack.2, implicit $exec, implicit $sgpr32 :: (load (s32) from %stack.2, addrspace 5)
# SHARE: $vgpr0 = SI_SPILL_V32_RESTORE %stack.0, $sgpr32, 0, implicit $exec :: (load (s32) from %stack.0, addrspace 5)
# SHARE: renamable $sgpr4_sgpr5 = SI_SPILL_S64_RESTORE %stack.1, implicit $exec, implicit $sgpr32 :: (load (s64) from %stack.1, align 4, addrspace 5)
# SHARE: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr4_sgpr5, @func, csr_amdgpu, implicit $vgpr0
# SHARE: $sgpr32 = SI_SPILL_S32_RESTORE %stack.2, implicit $exec, implicit $sgpr32 :: (load (s32) from %stack.2, addrspace 5)
# NOSHARE: stack:
# NOSHARE: - { id: 0, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
# NOSHARE: stack-id: default, callee-saved-register: '', callee-saved-restored: true,
# NOSHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# NOSHARE: - { id: 1, name: '', type: spill-slot, offset: 0, size: 8, alignment: 4,
# NOSHARE: stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
# NOSHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# NOSHARE: - { id: 2, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
# NOSHARE: stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
# NOSHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# NOSHARE: - { id: 3, name: '', type: spill-slot, offset: 0, size: 4, alignment: 4,
# NOSHARE: stack-id: sgpr-spill, callee-saved-register: '', callee-saved-restored: true,
# NOSHARE: debug-info-variable: '', debug-info-expression: '', debug-info-location: '' }
# NOSHARE: SI_SPILL_S32_SAVE $sgpr32, %stack.2, implicit $exec, implicit $sgpr32 :: (store (s32) into %stack.2, addrspace 5)
# NOSHARE: SI_SPILL_V32_SAVE killed $vgpr0, %stack.0, $sgpr32, 0, implicit $exec :: (store (s32) into %stack.0, addrspace 5)
# NOSHARE: SI_SPILL_S64_SAVE killed renamable $sgpr4_sgpr5, %stack.1, implicit $exec, implicit $sgpr32 :: (store (s64) into %stack.1, align 4, addrspace 5)
# NOSHARE: renamable $sgpr4_sgpr5 = SI_SPILL_S64_RESTORE %stack.1, implicit $exec, implicit $sgpr32 :: (load (s64) from %stack.1, align 4, addrspace 5)
# NOSHARE: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr4_sgpr5, @func, csr_amdgpu, implicit undef $vgpr0
# NOSHARE: $sgpr32 = SI_SPILL_S32_RESTORE %stack.2, implicit $exec, implicit $sgpr32 :: (load (s32) from %stack.2, addrspace 5)
# NOSHARE: SI_SPILL_S32_SAVE $sgpr32, %stack.3, implicit $exec, implicit $sgpr32 :: (store (s32) into %stack.3, addrspace 5)
# NOSHARE: $vgpr0 = SI_SPILL_V32_RESTORE %stack.0, $sgpr32, 0, implicit $exec :: (load (s32) from %stack.0, addrspace 5)
# NOSHARE: renamable $sgpr4_sgpr5 = SI_SPILL_S64_RESTORE %stack.1, implicit $exec, implicit $sgpr32 :: (load (s64) from %stack.1, align 4, addrspace 5)
# NOSHARE: dead $sgpr30_sgpr31 = SI_CALL killed renamable $sgpr4_sgpr5, @func, csr_amdgpu, implicit $vgpr0
# NOSHARE: $sgpr32 = SI_SPILL_S32_RESTORE %stack.3, implicit $exec, implicit $sgpr32 :: (load (s32) from %stack.3, addrspace 5)
...
name: sgpr_spill_wrong_stack_id
tracksRegLiveness: true
frameInfo:
adjustsStack: true
hasCalls: true
machineFunctionInfo:
scratchRSrcReg: $sgpr0_sgpr1_sgpr2_sgpr3
frameOffsetReg: $sgpr32
stackPtrOffsetReg: $sgpr32
body: |
bb.0:
%0:sreg_32_xm0 = COPY $sgpr32
%1:vreg_64 = IMPLICIT_DEF
%2:vgpr_32 = FLAT_LOAD_DWORD %1, 0, 0, implicit $exec, implicit $flat_scr
%3:sreg_64 = SI_PC_ADD_REL_OFFSET target-flags(amdgpu-rel32-lo) @func + 4, target-flags(amdgpu-rel32-hi) @func + 4, implicit-def dead $scc
ADJCALLSTACKUP 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr32
dead $sgpr30_sgpr31 = SI_CALL %3, @func, csr_amdgpu, implicit undef $vgpr0
$sgpr32 = COPY %0
%4:sreg_32_xm0 = COPY $sgpr32
ADJCALLSTACKDOWN 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr32
ADJCALLSTACKUP 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr32
$vgpr0 = COPY %2
dead $sgpr30_sgpr31 = SI_CALL %3, @func, csr_amdgpu, implicit killed $vgpr0
$sgpr32 = COPY %4
ADJCALLSTACKDOWN 0, 0, implicit-def $scc, implicit-def $sgpr32, implicit $sgpr32, implicit $sgpr32
...
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