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13 Commits

Author SHA1 Message Date
Duncan P. N. Exon Smith
67f5fcac4b BranchProb: Simplify printing code 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207559 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-29 17:07:42 +00:00
Duncan P. N. Exon Smith
d419606bec Support: Remove out-of-date comments 
The code is now shared... no need for a note.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207555 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-29 16:47:39 +00:00
Duncan P. N. Exon Smith
048f520b91 Support: Add BranchProbability::scale() and ::scaleByInverse() 
Add API to `BranchProbability` for scaling big integers.  Next job is to
rip the logic out of `BlockMass` and `BlockFrequency`.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207544 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-29 16:15:35 +00:00
Duncan P. N. Exon Smith
9c77098125 Support: Simplify BranchProbability operators 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@207541 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-04-29 16:12:16 +00:00
Chandler Carruth
a91a3e0489 Make an obviously const interface actually be marked as const. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@145009 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-11-20 11:22:03 +00:00
Benjamin Kramer
13b10731ab Implement comparison operators for BranchProbability in a way that can't overflow INT64_MAX. 
Add a test case for the edge case that triggers this. Thanks to Chandler for bringing this to my attention.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142794 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-24 13:50:56 +00:00
Chandler Carruth
66d847c8ff Now that we have comparison on probabilities, add some static functions 
to get important constant branch probabilities and use them for finding
the best branch out of a set of possibilities.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142762 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-23 20:10:34 +00:00
Benjamin Kramer
341473c86d Add compare operators to BranchProbability and use it to determine if an edge is hot. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142751 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-10-23 11:19:14 +00:00
Jakub Staszak
15b35677d0 BranchProbability::print returns void now. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135994 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-25 22:27:42 +00:00
Jakub Staszak
2ecdd72453 Fix class description. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135948 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-25 20:08:58 +00:00
Jakub Staszak
687dc24e1d - Make BranchProbability constructor public. 
- Add getCompl() method.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134857 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-07-10 02:12:39 +00:00
Jakub Staszak
44eb49c2a1 Introduce BlockFrequency analysis for BasicBlocks. 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133766 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-23 21:45:20 +00:00
Andrew Trick
f289df2d95 Branch profiling: floating-point avoidance. 
Patch by: Jakub Staszak!

Introduces BranchProbability. Changes unsigned to uint32_t all over and
uint64_t only when overflow is expected.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132867 91177308-0d34-0410-b5e6-96231b3b80d8
 2011-06-11 01:05:22 +00:00