intel/compiler: Add scheduler deps for instructions that implicitly read g0
Otherwise the scheduler can move the writes after the reads. Signed-off-by: Ian Romanick <ian.d.romanick@intel.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=95009 Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=95012 Reviewed-by: Kenneth Graunke <kenneth@whitecape.org> Reviewed-by: Jason Ekstrand <jason@jlekstrand.net> Tested-by: Mark Janes <mark.a.janes@intel.com> Cc: Clayton A Craft <clayton.a.craft@intel.com> Cc: mesa-stable@lists.freedesktop.org
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@ -334,6 +334,31 @@ public:
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opcode != BRW_OPCODE_IF &&
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opcode != BRW_OPCODE_WHILE));
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}
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bool reads_g0_implicitly() const
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{
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switch (opcode) {
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case SHADER_OPCODE_TEX:
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case SHADER_OPCODE_TXL:
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case SHADER_OPCODE_TXD:
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case SHADER_OPCODE_TXF:
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case SHADER_OPCODE_TXF_CMS_W:
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case SHADER_OPCODE_TXF_CMS:
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case SHADER_OPCODE_TXF_MCS:
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case SHADER_OPCODE_TXS:
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case SHADER_OPCODE_TG4:
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case SHADER_OPCODE_TG4_OFFSET:
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case SHADER_OPCODE_SAMPLEINFO:
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case VS_OPCODE_PULL_CONSTANT_LOAD:
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case GS_OPCODE_SET_PRIMITIVE_ID:
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case GS_OPCODE_GET_INSTANCE_ID:
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case SHADER_OPCODE_GEN4_SCRATCH_READ:
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case SHADER_OPCODE_GEN4_SCRATCH_WRITE:
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return true;
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default:
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return false;
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}
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}
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};
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/**
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@ -1267,6 +1267,9 @@ vec4_instruction_scheduler::calculate_deps()
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}
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}
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if (inst->reads_g0_implicitly())
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add_dep(last_fixed_grf_write, n);
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if (!inst->is_send_from_grf()) {
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for (int i = 0; i < inst->mlen; i++) {
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/* It looks like the MRF regs are released in the send
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