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Rename operand positions to Early and Late, and make weights f16/f32 values.

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This commit is contained in:
Chris Fallin
2021-08-31 17:31:23 -07:00
parent 3a18564e98
commit b19fa4857f
8 changed files with 145 additions and 92 deletions
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12
src/ion/data_structures.rs
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@@ -13,6 +13,7 @@
//! Data structures for backtracking allocator.
use super::liveranges::SpillWeight;
use crate::cfg::CFGInfo;
use crate::index::ContainerComparator;
use crate::indexset::IndexSet;
@@ -141,14 +142,15 @@ impl LiveRange {
self.uses_spill_weight_and_flags |= flag_word;
}
#[inline(always)]
pub fn uses_spill_weight(&self) -> u32 {
self.uses_spill_weight_and_flags & 0x1fff_ffff
pub fn uses_spill_weight(&self) -> SpillWeight {
let bits = (self.uses_spill_weight_and_flags & 0x1fff_ffff) << 2;
SpillWeight::from_f32(f32::from_bits(bits))
}
#[inline(always)]
pub fn set_uses_spill_weight(&mut self, weight: u32) {
assert!(weight < (1 << 29));
pub fn set_uses_spill_weight(&mut self, weight: SpillWeight) {
let weight_bits = (weight.to_f32().to_bits() >> 2) & 0x1fff_ffff;
self.uses_spill_weight_and_flags =
(self.uses_spill_weight_and_flags & 0xe000_0000) | weight;
(self.uses_spill_weight_and_flags & 0xe000_0000) | weight_bits;
}
}