d394d153fb
This patch implements a printer and parser for the S_WAITCNT mask. It prints the mask in a human-readable format, showing the counter values like `Vmcnt_<NUM>_Expcnt_<NUM>_Lgkmcnt_<NUM>`. The format matches the printing style of S_WAITCNT_DEPCTR. For example: ``` S_WAITCNT .Vmcnt_0_Expcnt_0_Lgkmcnt_0 S_WAITCNT .Expcnt_0 S_WAITCNT .AllOff ``` Counters at their maximum value (meaning "don't wait") are omitted. When all counters are at max, `.AllOff` is printed. Co-Authored-By: Claude Opus 4 <noreply@anthropic.com>
20 lines
884 B
YAML
20 lines
884 B
YAML
# RUN: llc -mtriple=amdgcn -mcpu=gfx1010 -verify-machineinstrs -run-pass si-insert-waitcnts -o - %s | FileCheck -check-prefixes=GCN,GFX10 %s
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# RUN: llc -mtriple=amdgcn -mcpu=gfx1100 -verify-machineinstrs -run-pass si-insert-waitcnts -o - %s | FileCheck -check-prefixes=GCN,GFX11 %s
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# GCN-LABEL: waitcnt-vscnt
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# GCN: GLOBAL_ATOMIC_ADD_RTN
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# GFX10-NEXT: S_WAITCNT .Lgkmcnt_0
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# GFX11-NEXT: S_WAITCNT .Lgkmcnt_0
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---
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name: waitcnt-vscnt
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machineFunctionInfo:
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isEntryFunction: true
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body: |
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bb.0:
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liveins: $sgpr0_sgpr1
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$sgpr4 = S_LOAD_DWORD_IMM $sgpr0_sgpr1, 4, 0 :: (dereferenceable invariant load (s32) from `ptr addrspace(4) poison`)
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S_WAITCNT_VSCNT_soft undef $sgpr_null, 0
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$vgpr0 = GLOBAL_ATOMIC_ADD_RTN $vgpr0_vgpr1, $vgpr2, 0, 1, implicit $exec :: (load store syncscope("agent") seq_cst (s32), addrspace 1)
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S_CMP_LG_U32 killed $sgpr4, 0, implicit-def $scc
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...
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