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For each function that we optimize we initialize a new list of lib functions. For each function name we malloc memory. This patch changes the Libcall map to use BumpPtrAllocator. Now we malloc only once. This speeds up instcombine by a few % on a large c++ program.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176170 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Nadav Rotem 2013-02-27 05:53:43 +00:00
parent bd2d1245e7
commit f26b4f05b3
1 changed files with 2 additions and 1 deletions
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3
lib/Transforms/Utils/SimplifyLibCalls.cpp
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@ -23,6 +23,7 @@
#include "llvm/IR/Intrinsics.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/Module.h"
#include "llvm/Support/Allocator.h"
#include "llvm/Target/TargetLibraryInfo.h"
#include "llvm/Transforms/Utils/BuildLibCalls.h"
@ -1672,7 +1673,7 @@ class LibCallSimplifierImpl {
const TargetLibraryInfo *TLI;
const LibCallSimplifier *LCS;
bool UnsafeFPShrink;
StringMap<LibCallOptimization*> Optimizations;
StringMap<LibCallOptimization*, BumpPtrAllocator> Optimizations;
// Fortified library call optimizations.
MemCpyChkOpt MemCpyChk;