[PATCH] D64325: RegUsageInfoCollector: Don't iterate all regs for every reg class

[Quentin Colombet via Phabricator via llvm-commits]

qcolombet added inline comments.


================
Comment at: lib/CodeGen/RegUsageInfoCollector.cpp:226
+             ++SuperSubs) {
+          if (!SavedRegUnits.test(*SuperSubs)) {
+            AllRegUnitsSaved = false;
----------------
We miss the setting of `HasAtLeastOneSubreg` in the loop.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D64325/new/

https://reviews.llvm.org/D64325