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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


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@164408 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2012-09-21 20:04:28 +00:00
parent fdb6ec34cd
commit bb36a43872
4 changed files with 10 additions and 3 deletions
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5
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;