364b97f23b
Enables 16-bit values to be spilled to scratch. Note, the memory instructions used are defined as reading and writing VGPR_32, but do not clobber the unspecified 16-bits of those registers, and so spills and reloads of lo and hi halves of the registers work.
59 lines
3.1 KiB
YAML
59 lines
3.1 KiB
YAML
# NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
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# RUN: llc -march=amdgcn -verify-machineinstrs -mcpu=gfx1100 -mattr=+real-true16 -run-pass=regallocfast -o - %s | FileCheck -check-prefix=SPILLED %s
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# RUN: llc -march=amdgcn -verify-machineinstrs -mcpu=gfx1100 -mattr=+real-true16 -run-pass=regallocfast,prologepilog -o - %s | FileCheck -check-prefix=EXPANDED %s
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---
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name: spill_restore_vgpr16
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tracksRegLiveness: true
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machineFunctionInfo:
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scratchRSrcReg: $sgpr0_sgpr1_sgpr2_sgpr3
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stackPtrOffsetReg: $sgpr32
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body: |
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; SPILLED-LABEL: name: spill_restore_vgpr16
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; SPILLED: bb.0:
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; SPILLED-NEXT: successors: %bb.1(0x80000000)
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; SPILLED-NEXT: {{ $}}
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; SPILLED-NEXT: S_NOP 0, implicit-def renamable $vgpr0_lo16, implicit-def renamable $vgpr0_hi16
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; SPILLED-NEXT: SI_SPILL_V16_SAVE killed $vgpr0_hi16, %stack.1, $sgpr32, 0, implicit $exec :: (store (s16) into %stack.1, addrspace 5)
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; SPILLED-NEXT: SI_SPILL_V16_SAVE killed $vgpr0_lo16, %stack.0, $sgpr32, 0, implicit $exec :: (store (s16) into %stack.0, addrspace 5)
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; SPILLED-NEXT: S_CBRANCH_SCC1 %bb.1, implicit undef $scc
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; SPILLED-NEXT: {{ $}}
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; SPILLED-NEXT: bb.1:
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; SPILLED-NEXT: successors: %bb.2(0x80000000)
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; SPILLED-NEXT: {{ $}}
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; SPILLED-NEXT: S_NOP 1
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; SPILLED-NEXT: {{ $}}
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; SPILLED-NEXT: bb.2:
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; SPILLED-NEXT: $vgpr0_lo16 = SI_SPILL_V16_RESTORE %stack.0, $sgpr32, 0, implicit $exec :: (load (s16) from %stack.0, addrspace 5)
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; SPILLED-NEXT: $vgpr0_hi16 = SI_SPILL_V16_RESTORE %stack.1, $sgpr32, 0, implicit $exec :: (load (s16) from %stack.1, addrspace 5)
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; SPILLED-NEXT: S_NOP 0, implicit killed renamable $vgpr0_lo16, implicit killed renamable $vgpr0_hi16
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;
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; EXPANDED-LABEL: name: spill_restore_vgpr16
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; EXPANDED: bb.0:
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; EXPANDED-NEXT: successors: %bb.1(0x80000000)
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; EXPANDED-NEXT: {{ $}}
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; EXPANDED-NEXT: S_NOP 0, implicit-def renamable $vgpr0_lo16, implicit-def renamable $vgpr0_hi16
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; EXPANDED-NEXT: SCRATCH_STORE_SHORT_SADDR_t16 killed $vgpr0_hi16, $sgpr32, 2, 0, implicit $exec, implicit $flat_scr :: (store (s16) into %stack.1, addrspace 5)
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; EXPANDED-NEXT: SCRATCH_STORE_SHORT_SADDR_t16 killed $vgpr0_lo16, $sgpr32, 0, 0, implicit $exec, implicit $flat_scr :: (store (s16) into %stack.0, addrspace 5)
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; EXPANDED-NEXT: S_CBRANCH_SCC1 %bb.1, implicit undef $scc
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; EXPANDED-NEXT: {{ $}}
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; EXPANDED-NEXT: bb.1:
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; EXPANDED-NEXT: successors: %bb.2(0x80000000)
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; EXPANDED-NEXT: {{ $}}
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; EXPANDED-NEXT: S_NOP 1
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; EXPANDED-NEXT: {{ $}}
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; EXPANDED-NEXT: bb.2:
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; EXPANDED-NEXT: $vgpr0_lo16 = SCRATCH_LOAD_SHORT_D16_SADDR_t16 $sgpr32, 0, 0, implicit $exec, implicit $flat_scr :: (load (s16) from %stack.0, addrspace 5)
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; EXPANDED-NEXT: $vgpr0_hi16 = SCRATCH_LOAD_SHORT_D16_SADDR_t16 $sgpr32, 2, 0, implicit $exec, implicit $flat_scr :: (load (s16) from %stack.1, addrspace 5)
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; EXPANDED-NEXT: S_NOP 0, implicit killed renamable $vgpr0_lo16, implicit killed renamable $vgpr0_hi16
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bb.0:
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S_NOP 0, implicit-def %0:vgpr_16, implicit-def %1:vgpr_16
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S_CBRANCH_SCC1 implicit undef $scc, %bb.1
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bb.1:
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S_NOP 1
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bb.2:
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S_NOP 0, implicit %0, implicit %1
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...
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