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aco/isel: emit v_mul_f64 for fp64 fsat

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Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38011>
This commit is contained in:
Georg Lehmann 2025-10-22 19:07:10 +02:00 • committed by Marge Bot
parent 9ece74ce79
commit 0c8b885e21
1 changed files with 3 additions and 3 deletions
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6
src/amd/compiler/instruction_selection/aco_select_nir_alu.cpp
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@ -2183,9 +2183,9 @@ visit_alu_instr(isel_context* ctx, nir_alu_instr* instr)
* operands */
// TODO: confirm that this holds under any circumstances
} else if (dst.regClass() == v2) {
Instruction* add =
bld.vop3(aco_opcode::v_add_f64_e64, Definition(dst), src, Operand::zero());
add->valu().clamp = true;
Instruction* mul = bld.vop3(aco_opcode::v_mul_f64_e64, Definition(dst), src,
Operand::c64(0x3FF0000000000000));
mul->valu().clamp = true;
} else if (dst.regClass() == s1 && instr->def.bit_size == 16) {
Temp low = bld.sop2(aco_opcode::s_max_f16, bld.def(s1), src, Operand::c16(0));
bld.sop2(aco_opcode::s_min_f16, Definition(dst), low, Operand::c16(0x3C00));