aco: fix sign-extend 8-bit subgroup operations on GFX6-GFX7
SDWA is GFX8+. Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com> Reviewed-by: Daniel Schürmann <daniel@schuermann.dev> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5327>
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@ -568,15 +568,27 @@ void emit_reduction(lower_context *ctx, aco_opcode op, ReduceOp reduce_op, unsig
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}
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if (src.regClass() == v1b) {
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aco_ptr<SDWA_instruction> sdwa{create_instruction<SDWA_instruction>(aco_opcode::v_mov_b32, asSDWA(Format::VOP1), 1, 1)};
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sdwa->operands[0] = Operand(PhysReg{tmp}, v1);
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sdwa->definitions[0] = Definition(PhysReg{tmp}, v1);
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if (reduce_op == imin8 || reduce_op == imax8)
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sdwa->sel[0] = sdwa_sbyte;
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else
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sdwa->sel[0] = sdwa_ubyte;
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sdwa->dst_sel = sdwa_udword;
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bld.insert(std::move(sdwa));
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if (ctx->program->chip_class >= GFX8) {
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aco_ptr<SDWA_instruction> sdwa{create_instruction<SDWA_instruction>(aco_opcode::v_mov_b32, asSDWA(Format::VOP1), 1, 1)};
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sdwa->operands[0] = Operand(PhysReg{tmp}, v1);
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sdwa->definitions[0] = Definition(PhysReg{tmp}, v1);
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if (reduce_op == imin8 || reduce_op == imax8)
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sdwa->sel[0] = sdwa_sbyte;
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else
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sdwa->sel[0] = sdwa_ubyte;
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sdwa->dst_sel = sdwa_udword;
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bld.insert(std::move(sdwa));
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} else {
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aco_opcode opcode;
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if (reduce_op == imin8 || reduce_op == imax8)
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opcode = aco_opcode::v_bfe_i32;
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else
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opcode = aco_opcode::v_bfe_u32;
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bld.vop3(opcode, Definition(PhysReg{tmp}, v1),
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Operand(PhysReg{tmp}, v1), Operand(0u), Operand(8u));
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}
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} else if (src.regClass() == v2b) {
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if (ctx->program->chip_class >= GFX10 &&
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(reduce_op == iadd16 || reduce_op == imax16 ||
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