[PATCH] D121922: Reland "Use a stable-sort when combining bases"
Sterling Augustine via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Thu Mar 17 10:02:17 PDT 2022
saugustine created this revision.
Herald added subscribers: mgrang, hiraditya.
Herald added a project: All.
saugustine requested review of this revision.
Herald added a project: LLVM.
Herald added a subscriber: llvm-commits.
Repository:
rG LLVM Github Monorepo
https://reviews.llvm.org/D121922
Files:
llvm/lib/Target/ARM/ARMISelLowering.cpp
Index: llvm/lib/Target/ARM/ARMISelLowering.cpp
===================================================================
--- llvm/lib/Target/ARM/ARMISelLowering.cpp
+++ llvm/lib/Target/ARM/ARMISelLowering.cpp
@@ -15977,10 +15977,10 @@
// Try to fold with other users. Non-constant updates are considered
// first, and constant updates are sorted to not break a sequence of
// strided accesses (if there is any).
- std::sort(BaseUpdates.begin(), BaseUpdates.end(),
- [](BaseUpdateUser &LHS, BaseUpdateUser &RHS) {
- return LHS.ConstInc < RHS.ConstInc;
- });
+ std::stable_sort(BaseUpdates.begin(), BaseUpdates.end(),
+ [](const BaseUpdateUser &LHS, const BaseUpdateUser &RHS) {
+ return LHS.ConstInc < RHS.ConstInc;
+ });
for (BaseUpdateUser &User : BaseUpdates) {
if (TryCombineBaseUpdate(Target, User, /*SimpleConstIncOnly=*/false, DCI))
return SDValue();
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