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aco: align swap operations to 4 bytes on GFX6/7

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GFX6/7 can only swap full registers

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5207>
This commit is contained in:
Daniel Schürmann
2020-06-23 11:55:34 +01:00
committed by Marge Bot
parent 91d7e40176
commit 76b5d72921
1 changed files with 5 additions and 1 deletions
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6
src/amd/compiler/aco_lower_to_hw_instr.cpp
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@@ -1159,7 +1159,7 @@ void do_swap(lower_context *ctx, Builder& bld, const copy_operation& copy, bool
Definition op_as_def = Definition(op.physReg(), op.regClass());
if (ctx->program->chip_class >= GFX9 && def.regClass() == v1) {
bld.vop1(aco_opcode::v_swap_b32, def, op_as_def, op, def_as_op);
} else if (def.regClass() == v1 || (def.regClass().is_subdword() && ctx->program->chip_class < GFX8)) {
} else if (def.regClass() == v1) {
assert(def.physReg().byte() == 0 && op.physReg().byte() == 0);
bld.vop2(aco_opcode::v_xor_b32, op_as_def, op, def_as_op);
bld.vop2(aco_opcode::v_xor_b32, def, op, def_as_op);
@@ -1561,6 +1561,10 @@ void handle_operands(std::map<PhysReg, copy_operation>& copy_map, lower_context*
swap.bytes = offset;
}
/* GFX6-7 can only swap full registers */
if (ctx->program->chip_class <= GFX7)
swap.bytes = align(swap.bytes, 4);
do_swap(ctx, bld, swap, preserve_scc, pi);
/* remove from map */