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Reorder lookupFragment and avoid invalidating if opsCompiled is zero.

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This commit is contained in:
Paul Holden 2023-11-18 17:28:51 +00:00
parent 43769f7eb0
commit 38d841b876
1 changed files with 19 additions and 18 deletions
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37
src/fragments.js
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@ -109,28 +109,29 @@ export function getFragmentMap() {
*/
export function lookupFragment(pc) {
let fragment = fragmentMap.get(pc);
if (!fragment) {
if (!debugOptions.enableDynarec) {
return null;
if (fragment) {
// If we failed to complete the fragment for any reason, reset it
if (fragment.opsCompiled > 0 && !fragment.func) {
// console.log(`fragment ${toString32(fragment.entryPC)} partially compiled ${fragment.opsCompiled} ops, invalidating and starting over`);
fragment.invalidate();
}
// Check if this pc is hot enough yet
let hc = hitCounts.get(pc) || 0;
hc++;
hitCounts.set(pc, hc);
if (hc < kHotFragmentThreshold) {
return null;
}
fragment = new Fragment(pc);
fragmentMap.set(pc, fragment);
return fragment;
}
// If we failed to complete the fragment for any reason, reset it
if (!fragment.func) {
fragment.invalidate();
if (!debugOptions.enableDynarec) {
return null;
}
// Check if this pc is hot enough yet
let hc = hitCounts.get(pc) || 0;
hc++;
hitCounts.set(pc, hc);
if (hc < kHotFragmentThreshold) {
return null;
}
fragment = new Fragment(pc);
fragmentMap.set(pc, fragment);
return fragment;
}