Subzero: Improve malloc/free behavior.
Use a bigger block size in the bump-pointer allocators, since we
basically know up front that we'll need lots of memory. The 1MB value
(versus the default of 4KB) was chosen somewhat arbitrarily, and
succeeds in pretty much removing bump-pointer related mallocs from the
profile.
Pre-reserve the a priori known number of edges in getTerminatorEdges()
to avoid vector resizing.
BUG= none
R=kschimpf@google.com
Review URL: https://codereview.chromium.org/760973002
diff --git a/src/IceInst.cpp b/src/IceInst.cpp
index 89c57e8..e1b5f43 100644
--- a/src/IceInst.cpp
+++ b/src/IceInst.cpp
@@ -250,6 +250,7 @@
NodeList InstBr::getTerminatorEdges() const {
NodeList OutEdges;
+ OutEdges.reserve(TargetTrue ? 2 : 1);
OutEdges.push_back(TargetFalse);
if (TargetTrue)
OutEdges.push_back(TargetTrue);
@@ -409,6 +410,7 @@
NodeList InstSwitch::getTerminatorEdges() const {
NodeList OutEdges;
+ OutEdges.reserve(NumCases + 1);
OutEdges.push_back(LabelDefault);
for (SizeT I = 0; I < NumCases; ++I) {
OutEdges.push_back(Labels[I]);