T0b1/regalloc2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

fuzzbug fix: restore clean error exit required by regalloc.rs fuzzer on too-many-live-regs error

Browse Source
This commit is contained in:
Chris Fallin
2021-06-01 16:31:33 -07:00
parent e49727dc75
commit 2614eac21e
1 changed files with 3 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/ion/mod.rs
View File

@@ -3128,7 +3128,9 @@ impl<'a, F: Function> Env<'a, F> {
// regalloc.rs fuzzer depends on the register allocator to // regalloc.rs fuzzer depends on the register allocator to
// correctly reject impossible-to-allocate programs in // correctly reject impossible-to-allocate programs in
// order to discard invalid test cases. // order to discard invalid test cases.
if attempts >= 2 && self.minimal_bundle(bundle) { if self.minimal_bundle(bundle)
&& (attempts >= 2 || lowest_cost_evict_conflict_cost.is_none())
{
if let Requirement::Register(class) = req { if let Requirement::Register(class) = req {
// Check if this is a too-many-live-registers situation. // Check if this is a too-many-live-registers situation.
let range = self.bundles[bundle.index()].ranges[0].range; let range = self.bundles[bundle.index()].ranges[0].range;