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Fix a significant recent(?) regression. StackSlotColoring no longer did anything

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because LiveStackAnalysis was not preserved by VirtRegWriter. This caused
big stack usage regression in some cases.

rdar://12340383

llvm-svn: 164408
This commit is contained in:
Evan Cheng
2012-09-21 20:04:28 +00:00
parent 747c639c27
commit b53825b82b
4 changed files with 10 additions and 3 deletions
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5
llvm/lib/CodeGen/LiveStackAnalysis.cpp
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@@ -25,7 +25,10 @@
using namespace llvm;
char LiveStacks::ID = 0;
INITIALIZE_PASS(LiveStacks, "livestacks",
INITIALIZE_PASS_BEGIN(LiveStacks, "livestacks",
"Live Stack Slot Analysis", false, false)
INITIALIZE_PASS_DEPENDENCY(SlotIndexes)
INITIALIZE_PASS_END(LiveStacks, "livestacks",
"Live Stack Slot Analysis", false, false)
char &llvm::LiveStacksID = LiveStacks::ID;