fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-08 06:58:05 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

aco: implement 64bit div find_lsb

Browse source 
This can be selected for divergent subgroupBallotFindLSB.

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25407>
This commit is contained in:
Georg Lehmann 2023-09-26 18:29:31 +02:00 • committed by Marge Bot
parent 4ea611bca0
commit b91616e800
1 changed files with 7 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
src/amd/compiler/aco_instruction_selection.cpp
View file

@ -1753,6 +1753,13 @@ visit_alu_instr(isel_context* ctx, nir_alu_instr* instr)
emit_vop1_instruction(ctx, instr, aco_opcode::v_ffbl_b32, dst);
} else if (src.regClass() == s2) {
bld.sop1(aco_opcode::s_ff1_i32_b64, Definition(dst), src);
} else if (src.regClass() == v2) {
Temp lo = bld.tmp(v1), hi = bld.tmp(v1);
bld.pseudo(aco_opcode::p_split_vector, Definition(lo), Definition(hi), src);
lo = bld.vop1(aco_opcode::v_ffbl_b32, bld.def(v1), lo);
hi = bld.vop1(aco_opcode::v_ffbl_b32, bld.def(v1), hi);
hi = uadd32_sat(bld, bld.def(v1), bld.copy(bld.def(s1), Operand::c32(32u)), hi);
bld.vop2(aco_opcode::v_min_u32, Definition(dst), lo, hi);
} else {
isel_err(&instr->instr, "Unimplemented NIR instr bit size");
}