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nak: Add helpers to BasicBlock to get phis

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24998>
This commit is contained in:
Faith Ekstrand 2023-08-30 20:58:43 -05:00 • committed by Marge Bot
parent 2f9565e725
commit d574d29102
1 changed files with 48 additions and 0 deletions
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48
src/nouveau/compiler/nak_ir.rs
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@ -4001,6 +4001,54 @@ impl BasicBlock {
self.instrs = instrs;
}
pub fn phi_dsts(&self) -> Option<&OpPhiDsts> {
for instr in self.instrs.iter() {
match &instr.op {
Op::PhiDsts(phi) => return Some(phi),
_ => break,
}
}
None
}
pub fn phi_dsts_mut(&mut self) -> Option<&mut OpPhiDsts> {
for instr in self.instrs.iter_mut() {
match &mut instr.op {
Op::PhiDsts(phi) => return Some(phi),
_ => break,
}
}
None
}
pub fn phi_srcs(&self) -> Option<&OpPhiSrcs> {
for instr in self.instrs.iter().rev() {
if instr.is_branch() {
continue;
}
match &instr.op {
Op::PhiSrcs(phi) => return Some(phi),
_ => break,
}
}
None
}
pub fn phi_srcs_mut(&mut self) -> Option<&mut OpPhiSrcs> {
for instr in self.instrs.iter_mut().rev() {
if instr.is_branch() {
continue;
}
match &mut instr.op {
Op::PhiSrcs(phi) => return Some(phi),
_ => break,
}
}
None
}
pub fn branch(&self) -> Option<&Instr> {
if let Some(i) = self.instrs.last() {
if i.is_branch() {