6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-06-24 08:24:33 +00:00
Code Issues Projects Releases Wiki Activity

Start refactoring the inline cost estimation code so that it can be used

Browse Source 
for purposes other than inlining.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@83997 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-10-13 18:24:11 +00:00
parent 11f15dbb28
commit 9b39cf5ac8
2 changed files with 87 additions and 79 deletions
Download Patch File Download Diff File Expand all files Collapse all files

24
include/llvm/Transforms/Utils/InlineCost.h
View File

@ -23,6 +23,7 @@ namespace llvm {
class Value;
class Function;
class BasicBlock;
class CallSite;
template<class PtrType, unsigned SmallSize>
class SmallPtrSet;
@ -96,9 +97,9 @@ namespace llvm {
: ConstantWeight(CWeight), AllocaWeight(AWeight) {}
};
// FunctionInfo - For each function, calculate the size of it in blocks and
// instructions.
struct FunctionInfo {
// RegionInfo - Calculate size and a few related metrics for a set of
// basic blocks.
struct RegionInfo {
/// NeverInline - True if this callee should never be inlined into a
/// caller.
bool NeverInline;
@ -115,17 +116,24 @@ namespace llvm {
/// kernels.
unsigned NumVectorInsts;
/// NumRets - Keep track of how many Ret instructions the block contains.
unsigned NumRets;
/// ArgumentWeights - Each formal argument of the function is inspected to
/// see if it is used in any contexts where making it a constant or alloca
/// would reduce the code size. If so, we add some value to the argument
/// entry here.
std::vector<ArgInfo> ArgumentWeights;
FunctionInfo() : NeverInline(false), usesDynamicAlloca(false), NumInsts(0),
NumBlocks(0), NumVectorInsts(0) {}
RegionInfo() : NeverInline(false), usesDynamicAlloca(false), NumInsts(0),
NumBlocks(0), NumVectorInsts(0), NumRets(0) {}
/// analyzeFunction - Fill in the current structure with information
/// gleaned from the specified function.
/// analyzeBasicBlock - Add information about the specified basic block
/// to the current structure.
void analyzeBasicBlock(const BasicBlock *BB);
/// analyzeFunction - Add information about the specified function
/// to the current structure.
void analyzeFunction(Function *F);
/// CountCodeReductionForConstant - Figure out an approximation for how
@ -140,7 +148,7 @@ namespace llvm {
unsigned CountCodeReductionForAlloca(Value *V);
};
std::map<const Function *, FunctionInfo> CachedFunctionInfo;
std::map<const Function *, RegionInfo> CachedFunctionInfo;
public: