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aco: Use s_pack_ll_b32_b16 for scalar zero extend.

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Foz-DB Navi21:
Totals from 2403 (1.78% of 134913) affected shaders:
CodeSize: 25329156 -> 25311244 (-0.07%)

Signed-off-by: Georg Lehmann <dadschoorse@gmail.com>
Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/19413>
This commit is contained in:
Georg Lehmann 2022-10-31 11:07:55 +01:00 • committed by Marge Bot
parent d2f3e01f61
commit 9746ddf1d6
2 changed files with 4 additions and 1 deletions
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2
src/amd/compiler/aco_lower_to_hw_instr.cpp
View file

@ -2224,6 +2224,8 @@ lower_to_hw_instr(Program* program)
} else if (offset == 0 && signext && (bits == 8 || bits == 16)) {
bld.sop1(bits == 8 ? aco_opcode::s_sext_i32_i8 : aco_opcode::s_sext_i32_i16,
dst, op);
} else if (ctx.program->gfx_level >= GFX9 && offset == 0 && bits == 16) {
bld.sop2(aco_opcode::s_pack_ll_b32_b16, dst, op, Operand::zero());
} else {
bld.sop2(signext ? aco_opcode::s_bfe_i32 : aco_opcode::s_bfe_u32, dst,
bld.def(s1, scc), op, Operand::c32((bits << 16) | offset));

3
src/amd/compiler/tests/test_to_hw_instr.cpp
View file

@ -648,7 +648,8 @@ BEGIN_TEST(to_hw_instr.extract)
EXT(2, 8)
//! s1: %_:s[0], s1: %_:scc = @s_shr %_:s[1], 24
EXT(3, 8)
//~gfx.*_unsigned! s1: %_:s[0], s1: %_:scc = @s_bfe %_:s[1], 0x100000
//~gfx(7|8)_unsigned! s1: %_:s[0], s1: %_:scc = @s_bfe %_:s[1], 0x100000
//~gfx(9|11)_unsigned! s1: %_:s[0] = s_pack_ll_b32_b16 %_:s[1], 0
//~gfx.*_signed! s1: %_:s[0] = s_sext_i32_i16 %_:s[1]
EXT(0, 16)
//! s1: %_:s[0], s1: %_:scc = @s_shr %_:s[1], 16