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agx: Add saturated integer add/subtract support

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Just a flag on the regular iadd instruction.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10582>
This commit is contained in:
Alyssa Rosenzweig 2021-04-16 20:49:23 -04:00 • committed by Alyssa Rosenzweig
parent 86ae965ea4
commit 17bb5a067a
1 changed files with 28 additions and 0 deletions
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28
src/asahi/compiler/agx_compile.c
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@ -263,6 +263,34 @@ agx_emit_alu(agx_builder *b, nir_alu_instr *instr)
case nir_op_ineg: return agx_iadd_to(b, dst, agx_zero(), agx_neg(s0), 0);
case nir_op_imul: return agx_imad_to(b, dst, s0, s1, agx_zero(), 0);
case nir_op_iadd_sat:
{
agx_instr *I = agx_iadd_to(b, dst, s0, s1, 0);
I->saturate = true;
return I;
}
case nir_op_isub_sat:
{
agx_instr *I = agx_iadd_to(b, dst, s0, agx_neg(s1), 0);
I->saturate = true;
return I;
}
case nir_op_uadd_sat:
{
agx_instr *I = agx_iadd_to(b, dst, agx_abs(s0), agx_abs(s1), 0);
I->saturate = true;
return I;
}
case nir_op_usub_sat:
{
agx_instr *I = agx_iadd_to(b, dst, agx_abs(s0), agx_neg(agx_abs(s1)), 0);
I->saturate = true;
return I;
}
case nir_op_fsat:
{
agx_instr *I = agx_fadd_to(b, dst, s0, agx_negzero());