maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Revert "[JumpThreading] Prevent non-deterministic use lists" 

This reverts commit f2c2f5354070469dac253373c66527ca971ddc66.

llvm-svn: 286975
This commit is contained in:
Pablo Barrio 2016-11-15 15:42:17 +00:00
parent 90f0a84943
commit 5f782bb048
1 changed files with 8 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
llvm/lib/Transforms/Scalar/JumpThreading.cpp
View File

@ -2042,18 +2042,19 @@ bool JumpThreadingPass::TryToUnfoldSelectInCurrBB(BasicBlock *BB) {
// Look for scalar booleans used in selects as conditions. If there are
// several selects that use the same boolean, they are candidates for jump
// threading and therefore we should unfold them.
for (Use& U : I.uses()) {
auto *SI = dyn_cast<SelectInst>(U.getUser());
if (SI && U.getOperandNo() == 0)
for (Value *U : I.users())
if (auto *SI = dyn_cast<SelectInst>(U))
Selects.push_back(SI);
}
if (Selects.size() <= 1)
continue;
// Remove duplicates
std::sort(Selects.begin(), Selects.end());
auto NewEnd = std::unique(Selects.begin(), Selects.end());
Changed = true;
for (auto SI : Selects)
expandSelect(SI);
for (auto SI = Selects.begin(); SI != NewEnd; ++SI)
expandSelect(*SI);
}
}