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ReversePostOrderFunctionAttrs is not modifying the call graph, let's preserve it.
author
Mehdi Amini
<mehdi.amini@apple.com>
Mon, 2 May 2016 18:03:33 +0000
(18:03 +0000)
committer
Mehdi Amini
<mehdi.amini@apple.com>
Mon, 2 May 2016 18:03:33 +0000
(18:03 +0000)
When running cc1 with -flto=thin, it is followed by GlobalOpt, which
requires the callgraph. This saves rebuilding one.
From: Mehdi Amini <mehdi.amini@apple.com>
llvm-svn: 268266
llvm/lib/Transforms/IPO/FunctionAttrs.cpp
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diff --git
a/llvm/lib/Transforms/IPO/FunctionAttrs.cpp
b/llvm/lib/Transforms/IPO/FunctionAttrs.cpp
index
91768f5
..
b6ebc63
100644
(file)
--- a/
llvm/lib/Transforms/IPO/FunctionAttrs.cpp
+++ b/
llvm/lib/Transforms/IPO/FunctionAttrs.cpp
@@
-1153,6
+1153,7
@@
struct ReversePostOrderFunctionAttrs : public ModulePass {
void getAnalysisUsage(AnalysisUsage &AU) const override {
AU.setPreservesCFG();
AU.addRequired<CallGraphWrapperPass>();
+ AU.addPreserved<CallGraphWrapperPass>();
}
};
}