Mesa (master): aco: add can_reorder flags to load_ubo and load_constant
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Wed Oct 30 16:21:51 UTC 2019
Module: Mesa
Branch: master
Commit: 636d45e46a490667eac353b7d84d56053eafb5f9
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=636d45e46a490667eac353b7d84d56053eafb5f9
Author: Daniel Schürmann <daniel at schuermann.dev>
Date: Thu Oct 10 14:55:13 2019 +0200
aco: add can_reorder flags to load_ubo and load_constant
These got lost due to some refactoring.
Due to the way our scheduler works currently, for now
we add back the reorder flag for divergent loads only.
Reviewed-by: Rhys Perry <pendingchaos02 at gmail.com>
---
src/amd/compiler/aco_instruction_selection.cpp | 14 +++++++++-----
1 file changed, 9 insertions(+), 5 deletions(-)
diff --git a/src/amd/compiler/aco_instruction_selection.cpp b/src/amd/compiler/aco_instruction_selection.cpp
index 7ae6fb2d9a1..c279f04a031 100644
--- a/src/amd/compiler/aco_instruction_selection.cpp
+++ b/src/amd/compiler/aco_instruction_selection.cpp
@@ -3271,7 +3271,8 @@ void visit_load_resource(isel_context *ctx, nir_intrinsic_instr *instr)
bld.copy(Definition(get_ssa_temp(ctx, &instr->dest.ssa)), index);
}
-void load_buffer(isel_context *ctx, unsigned num_components, Temp dst, Temp rsrc, Temp offset, bool glc=false)
+void load_buffer(isel_context *ctx, unsigned num_components, Temp dst,
+ Temp rsrc, Temp offset, bool glc=false, bool readonly=true)
{
Builder bld(ctx->program, ctx->block);
@@ -3300,7 +3301,8 @@ void load_buffer(isel_context *ctx, unsigned num_components, Temp dst, Temp rsrc
mubuf->offen = (offset.type() == RegType::vgpr);
mubuf->glc = glc;
mubuf->dlc = dlc;
- mubuf->barrier = barrier_buffer;
+ mubuf->barrier = readonly ? barrier_none : barrier_buffer;
+ mubuf->can_reorder = readonly;
bld.insert(std::move(mubuf));
emit_split_vector(ctx, lower, 2);
num_bytes -= 16;
@@ -3330,7 +3332,8 @@ void load_buffer(isel_context *ctx, unsigned num_components, Temp dst, Temp rsrc
mubuf->offen = (offset.type() == RegType::vgpr);
mubuf->glc = glc;
mubuf->dlc = dlc;
- mubuf->barrier = barrier_buffer;
+ mubuf->barrier = readonly ? barrier_none : barrier_buffer;
+ mubuf->can_reorder = readonly;
mubuf->offset = const_offset;
aco_ptr<Instruction> instr = std::move(mubuf);
@@ -3384,7 +3387,8 @@ void load_buffer(isel_context *ctx, unsigned num_components, Temp dst, Temp rsrc
load->definitions[0] = Definition(dst);
load->glc = glc;
load->dlc = dlc;
- load->barrier = barrier_buffer;
+ load->barrier = readonly ? barrier_none : barrier_buffer;
+ load->can_reorder = false; // FIXME: currently, it doesn't seem beneficial due to how our scheduler works
assert(ctx->options->chip_class >= GFX8 || !glc);
/* trim vector */
@@ -4358,7 +4362,7 @@ void visit_load_ssbo(isel_context *ctx, nir_intrinsic_instr *instr)
rsrc = bld.smem(aco_opcode::s_load_dwordx4, bld.def(s4), rsrc, Operand(0u));
bool glc = nir_intrinsic_access(instr) & (ACCESS_VOLATILE | ACCESS_COHERENT);
- load_buffer(ctx, num_components, dst, rsrc, get_ssa_temp(ctx, instr->src[1].ssa), glc);
+ load_buffer(ctx, num_components, dst, rsrc, get_ssa_temp(ctx, instr->src[1].ssa), glc, false);
}
void visit_store_ssbo(isel_context *ctx, nir_intrinsic_instr *instr)
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