Fix test for switch statements and increase
threshold a bit per experimentation.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108935 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/MachineLICM.cpp b/lib/CodeGen/MachineLICM.cpp
index 83f66ce..9409d88 100644
--- a/lib/CodeGen/MachineLICM.cpp
+++ b/lib/CodeGen/MachineLICM.cpp
@@ -488,13 +488,14 @@
MII = NextMII;
}
- const std::vector<MachineDomTreeNode*> &Children = N->getChildren();
// Don't hoist things out of a large switch statement. This often causes
// code to be hoisted that wasn't going to be executed, and increases
// register pressure in a situation where it's likely to matter.
- if (Children.size() < 10)
+ if (BB->succ_size() < 25) {
+ const std::vector<MachineDomTreeNode*> &Children = N->getChildren();
for (unsigned I = 0, E = Children.size(); I != E; ++I)
HoistRegion(Children[I]);
+ }
}
/// IsLICMCandidate - Returns true if the instruction may be a suitable