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nak: Support encoding -Zero

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24998>
This commit is contained in:
Faith Ekstrand 2023-10-10 13:20:29 -05:00 • committed by Marge Bot
parent a0b517ba3f
commit 2c1cc06d03
1 changed files with 10 additions and 19 deletions
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29
src/nouveau/compiler/nak_encode_sm75.rs
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@ -54,10 +54,16 @@ fn src_mod_is_bnot(src_mod: SrcMod) -> bool {
}
impl ALUSrc {
fn from_nonzero_src(src: &Src) -> ALUSrc {
fn from_src_file(src: &Src, file: RegFile) -> ALUSrc {
match src.src_ref {
SrcRef::Reg(reg) => {
SrcRef::Zero | SrcRef::Reg(_) => {
let reg = match src.src_ref {
SrcRef::Zero => RegRef::zero(file, 1),
SrcRef::Reg(reg) => reg,
_ => panic!("Invalid source ref"),
};
assert!(reg.comps() == 1);
assert!(reg.file() == file);
let alu_ref = ALURegRef {
reg: reg,
abs: src_mod_has_abs(src.src_mod),
@ -85,28 +91,13 @@ impl ALUSrc {
}
}
fn zero(file: RegFile) -> ALUSrc {
let src = Src {
src_ref: SrcRef::Reg(RegRef::zero(file, 1)),
/* Modifiers don't matter for zero */
src_mod: SrcMod::None,
};
ALUSrc::from_nonzero_src(&src)
}
pub fn from_src(src: &Src) -> ALUSrc {
match src.src_ref {
SrcRef::Zero => ALUSrc::zero(RegFile::GPR),
_ => ALUSrc::from_nonzero_src(src),
}
ALUSrc::from_src_file(src, RegFile::GPR)
}
pub fn from_usrc(src: &Src) -> ALUSrc {
assert!(src.is_uniform());
match src.src_ref {
SrcRef::Zero => ALUSrc::zero(RegFile::UGPR),
_ => ALUSrc::from_nonzero_src(src),
}
ALUSrc::from_src_file(src, RegFile::UGPR)
}
}