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nak: Implement fmulz and ffmaz

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Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/10261
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26569>
This commit is contained in:
Faith Ekstrand 2023-12-07 09:35:38 -06:00 • committed by Marge Bot
parent ce8d966085
commit 3955e596df
2 changed files with 8 additions and 4 deletions
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4
src/nouveau/compiler/nak/api.rs
View file

@ -123,6 +123,10 @@ fn nir_options(dev: &nv_device_info) -> nir_shader_compiler_options {
op.has_sudot_4x8 = dev.sm >= 70;
op.max_unroll_iterations = 32;
// We set .ftz on f32 by default so we can support fmulz whenever the client
// doesn't explicitly request denorms.
op.has_fmulz_no_denorms = true;
op
}

8
src/nouveau/compiler/nak/from_nir.rs
View file

@ -703,7 +703,7 @@ impl<'a> ShaderFromNir<'a> {
dst
}
nir_op_fexp2 => b.mufu(MuFuOp::Exp2, srcs[0]),
nir_op_ffma => {
nir_op_ffma | nir_op_ffmaz => {
let ftype = FloatType::from_bits(alu.def.bit_size().into());
assert!(alu.def.bit_size() == 32);
let dst = b.alloc_ssa(RegFile::GPR, 1);
@ -713,7 +713,7 @@ impl<'a> ShaderFromNir<'a> {
saturate: self.try_saturate_alu_dst(&alu.def),
rnd_mode: self.float_ctl[ftype].rnd_mode,
ftz: self.float_ctl[ftype].ftz,
dnz: false,
dnz: alu.op == nir_op_ffmaz,
});
dst
}
@ -732,7 +732,7 @@ impl<'a> ShaderFromNir<'a> {
});
dst
}
nir_op_fmul => {
nir_op_fmul | nir_op_fmulz => {
let ftype = FloatType::from_bits(alu.def.bit_size().into());
assert!(alu.def.bit_size() == 32);
let dst = b.alloc_ssa(RegFile::GPR, 1);
@ -742,7 +742,7 @@ impl<'a> ShaderFromNir<'a> {
saturate: self.try_saturate_alu_dst(&alu.def),
rnd_mode: self.float_ctl[ftype].rnd_mode,
ftz: self.float_ctl[ftype].ftz,
dnz: false,
dnz: alu.op == nir_op_fmulz,
});
dst
}