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llvm-mirror/test/CodeGen/AMDGPU/hazard-pass-ordering.mir
Stanislav Mekhanoshin 196e7f3138 [AMDGPU] Use single cache policy operand
Replace individual operands GLC, SLC, and DLC with a single cache_policy
bitmask operand. This will reduce the number of operands in MIR and I hope
the amount of code. These operands are mostly 0 anyway.

Additional advantage that parser will accept these flags in any order unlike
now.

Differential Revision: https://reviews.llvm.org/D96469
2021-03-15 13:00:59 -07:00

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# RUN: llc -march=amdgcn -mcpu=gfx908 -start-before=si-pre-emit-peephole %s -o - | FileCheck -check-prefix=GCN %s
# Verify that the dedicated hazard recognizer pass is run after late peephole
# optimizations. New hazards can be introduced if instructions are removed by
# passes that are run before the final hazard recognizer.
---
# GCN-LABEL: {{^}}mai_hazard_pass_ordering_optimize_vcc_branch:
# GCN: v_accvgpr_read_b32
# GCN-NEXT: s_nop
# GCN-NEXT: flat_load_dword
name: mai_hazard_pass_ordering_optimize_vcc_branch
body: |
bb.0:
$vgpr0 = V_MOV_B32_e32 1, implicit $exec
$vgpr2 = V_ACCVGPR_READ_B32_e64 killed $agpr0, implicit $exec
$sgpr8_sgpr9 = S_MOV_B64 -1
$vgpr3 = FLAT_LOAD_DWORD $vgpr0_vgpr1, 0, 0, implicit $exec, implicit $flat_scr
$vcc = S_ANDN2_B64 $exec, killed renamable $sgpr8_sgpr9, implicit-def dead $scc
S_CBRANCH_VCCNZ %bb.1, implicit killed $vcc
bb.1:
S_ENDPGM 0
...