| 5d3257e37ced7dd75023bb9c4619f297374f61d6 |
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28-Jun-2013 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Fix a bad overflow check pointed out by Ben.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185226 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Support/BlockFrequency.cpp
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| e187512bde9fd090a78924928a0b8793e3d87cbb |
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28-Jun-2013 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Eliminate an assortment of undefined behavior.
Hopefully, this fixes the PPC64 buildbots.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185218 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Support/BlockFrequency.cpp
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| a45b375610b24243ad131c96142f7f57c08c2d43 |
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28-Jun-2013 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Stylistic cleanups, no functional change.
- Use static functions instead of anonymous namespace.
- Appease the Doxygen lobby.
- Use 0-based induction variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185185 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Support/BlockFrequency.cpp
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| d7648ff20f8bbc8217a26576ca96addc55e003de |
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28-Jun-2013 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Add a division operator to BlockFrequency.
Allow a BlockFrequency to be divided by a non-zero BranchProbability
with saturating arithmetic. This will be used to compute the frequency
of a loop header given the probability of leaving the loop.
Our long division algorithm already saturates on overflow, so that was a
freebie.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@185184 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Support/BlockFrequency.cpp
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| b1c0cc22dd5854a77e5699e80ce37545315b98ed |
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25-Jun-2013 |
Jakob Stoklund Olesen <stoklund@2pi.dk> |
Print block frequencies in decimal form.
This is easier to read than the internal fixed-point representation.
If anybody knows the correct algorithm for converting fixed-point
numbers to base 10, feel free to fix it.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184881 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Support/BlockFrequency.cpp
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| b47aceaf068352eebf4da87a647363b2317f0f22 |
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21-Jun-2013 |
Benjamin Kramer <benny.kra@googlemail.com> |
Revert "BlockFrequency: Saturate at 1 instead of 0 when multiplying a frequency with a branch probability."
This reverts commit r184584. Breaks PPC selfhost.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184590 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Support/BlockFrequency.cpp
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| 93702a3b0754052d926c75082abf7ca156b80c45 |
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21-Jun-2013 |
Benjamin Kramer <benny.kra@googlemail.com> |
BlockFrequency: Saturate at 1 instead of 0 when multiplying a frequency with a branch probability.
Zero is used by BlockFrequencyInfo as a special "don't know" value. It also
causes a sink for frequencies as you can't ever get off a zero frequency with
more multiplies.
This recovers a 10% regression on MultiSource/Benchmarks/7zip. A zero frequency
was propagated into an inner loop causing excessive spilling.
PR16402.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184584 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Support/BlockFrequency.cpp
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| bc1430a0a0b3f97b86039950e57d832cb01f1cf6 |
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27-Oct-2011 |
Benjamin Kramer <benny.kra@googlemail.com> |
BlockFrequency: Use a smarter overflow check.
This trades one 64 bit div for one 64 bit mul and some arithmetic.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143106 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Support/BlockFrequency.cpp
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| ffcc2a542c13b698848f38c56a13cdac388c65ab |
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27-Jul-2011 |
Jakub Staszak <jstaszak@apple.com> |
Optimize 96-bit division a little bit.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136222 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Support/BlockFrequency.cpp
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| 636a02b57c3ade2eb528bda31f05556f42aa7d48 |
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27-Jul-2011 |
Jakub Staszak <jstaszak@apple.com> |
Move static methods to the anonymous namespace.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@136221 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Support/BlockFrequency.cpp
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| a26ec886a3a4d9d317262861d7a3de4f64bad71c |
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26-Jul-2011 |
Jakub Staszak <jstaszak@apple.com> |
Add BlockFrequency class.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135992 91177308-0d34-0410-b5e6-96231b3b80d8
/external/llvm/lib/Support/BlockFrequency.cpp
|