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- Part of optimal static profiling patch sequence by Andreas Neustifter.

 - Store edge, block, and function information separately for each functions
   (instead of in one giant map).

 - Return frequencies as double instead of int, and use a sentinel value for
   missing information.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78477 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Daniel Dunbar
2009-08-08 17:43:09 +00:00
parent 3e0094d969
commit caaa49336b
7 changed files with 157 additions and 91 deletions
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4
lib/Transforms/Scalar/BasicBlockPlacement.cpp
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@ -127,13 +127,13 @@ void BlockPlacement::PlaceBlocks(BasicBlock *BB) {
/*empty*/;
if (SI == E) return; // No more successors to place.
unsigned MaxExecutionCount = PI->getExecutionCount(*SI);
double MaxExecutionCount = PI->getExecutionCount(*SI);
BasicBlock *MaxSuccessor = *SI;
// Scan for more frequently executed successors
for (; SI != E; ++SI)
if (!PlacedBlocks.count(*SI)) {
unsigned Count = PI->getExecutionCount(*SI);
double Count = PI->getExecutionCount(*SI);
if (Count > MaxExecutionCount ||
// Prefer to not disturb the code.
(Count == MaxExecutionCount && *SI == &*InsertPos)) {