Displaying 3 results from an estimated 3 matches for "getsumforblock".
2013 Jan 23
2
[LLVMdev] BlockFrequencyImpl asserts on multiple edges between same MBBs with different weights in LLVM 3.2
...ontains two edges to the default MBB, one edge for
the jumptable, and another one for the jump handling the case when the
index is not in the jumptable.
For some reason, our backend assigns those edges different weights
(let's say 24 for the default edge and 16 for the others).
In LLVM 3.1, getSumForBlock in lib/CodeGen/MachineBranchProbability.cpp
used getEdgeWeight(MBB*, MBB*), which always return the weight of the
first edge to the default block, i.e., it calculated the sum of the
weights as 24+16+24+16+16 = 96. In LLVM 3.2 getSumForBlock was changed
to use getEdgeWeight(MBB*, MBB::succ_iterat...
2015 Mar 24
3
[LLVMdev] RFC - Improvements to PGO profile support
...ally bad behavior in cases where the counts are very small and has almost no impact when the counts are large.
> 2.4) Fix the bug in 'BranchProbabilityInfo::calcMetadataWeights'
> that does capping without scaling
> 2.5) Fix a similar bug in 'MachineBranchProbabilityInfo::getSumForBlock('
> .. other bugs found
> 3) introduce a new meta data to represent function entry global
> hotness (the implementation can choose to use entry execution count)
> 4) implement frequency/profile update interfaces for Inline
> transformations -- i.e., allowing importing callee...
2015 Mar 24
8
[LLVMdev] RFC - Improvements to PGO profile support
On 03/10/2015 10:14 AM, Diego Novillo wrote:
>
>
> On Thu, Mar 5, 2015 at 11:29 AM, Bob Wilson <bob.wilson at apple.com
> <mailto:bob.wilson at apple.com>> wrote:
>
>
>> On Mar 2, 2015, at 4:19 PM, Diego Novillo <dnovillo at google.com
>> <mailto:dnovillo at google.com>> wrote:
>>
>> On Thu, Feb 26, 2015 at 6:54 PM,