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aco: shrink code size of some p_extract

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fossil-db (navi21):
Totals from 37 (0.05% of 79395) affected shaders:
CodeSize: 2048204 -> 2047836 (-0.02%)

fossil-db (navi31):
Totals from 307 (0.39% of 79395) affected shaders:
CodeSize: 3075732 -> 3065236 (-0.34%); split: -0.34%, +0.00%

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Georg Lehmann <dadschoorse@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31762>
This commit is contained in:
Rhys Perry 2024-09-27 16:26:22 +01:00 • committed by Marge Bot
parent d285333800
commit e47bc3e750
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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@ -2544,7 +2544,11 @@ lower_to_hw_instr(Program* program)
bld.sop2(signext ? aco_opcode::s_bfe_i32 : aco_opcode::s_bfe_u32, dst,
instr->definitions[1], op, Operand::c32((bits << 16) | offset));
}
} else if (dst.regClass() == v1 && op.physReg().byte() == 0) {
} else if (dst.regClass() == v1) {
if (op.physReg().byte()) {
offset += op.physReg().byte() * 8;
op = Operand(PhysReg(op.physReg().reg()), v1);
}
assert(op.physReg().byte() == 0 && dst.physReg().byte() == 0);
if (offset == (32 - bits) && op.regClass() != s1) {
bld.vop2(signext ? aco_opcode::v_ashrrev_i32 : aco_opcode::v_lshrrev_b32, dst,