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Fix PReg indexing with >32 pregs

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Amanieu d'Antras
2021-09-16 14:49:23 +01:00
parent 44612690dc
commit af527aca88
1 changed files with 2 additions and 2 deletions
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4
src/lib.rs
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@@ -108,13 +108,13 @@ impl PReg {
/// all PRegs and index it efficiently. /// all PRegs and index it efficiently.
#[inline(always)] #[inline(always)]
pub fn index(self) -> usize { pub fn index(self) -> usize {
((self.class as u8 as usize) << 5) | (self.hw_enc as usize) ((self.class as u8 as usize) << Self::MAX_BITS) | (self.hw_enc as usize)
} }
/// Construct a PReg from the value returned from `.index()`. /// Construct a PReg from the value returned from `.index()`.
#[inline(always)] #[inline(always)]
pub fn from_index(index: usize) -> Self { pub fn from_index(index: usize) -> Self {
let class = (index >> 5) & 1; let class = (index >> Self::MAX_BITS) & 1;
let class = match class { let class = match class {
0 => RegClass::Int, 0 => RegClass::Int,
1 => RegClass::Float, 1 => RegClass::Float,