dear LLVMers,
I am trying to use some of the LLVM alias analyses, and I would like to
check two things with you: is scev-aa being maintained in LLVM 3.7? Second
question: I run cfl-aa, and I got a very small number of pointer
disambiguation (no alias) with it. My results for SPEC CINT 2006 follow
below. Is this low number of no alias responses something to be excepted?
Below the results that I got for SPEC with cfl-aa:
TotalQueries | Name | NoAliasResponses
31944 | 470.lbm | 0
49133 | 429.mcf | 42
95098 | 473.astar | 0
146301 | 462.libquantum | 5
428082 | 458.sjeng | 9773
808471 | 433.milc | 2163
1787190 | 450.soplex | 72
2472234 | 401.bzip2 | 229
2574217 | 456.hmmer | 1833
3492577 | 445.gobmk | 8480
3685838 | 444.namd | 616
12943554 | 471.omnetpp | 422
20068605 | 464.h264ref | 8593
23849576 | 400.perlbench | 99316
37779455 | 447.dealII | 11204
186008992 | 403.gcc | 404828
I am finding these results weird because I was expecting a larger
number of no-alias responses. For instance, I got only 404,828 responses
out of 186,008,992 queries. Has anyone gotten similar, or different results?
Regards,
Vitor Mendes Paisante
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dear LLVMers,
I am trying to use some of the LLVM alias analyses, and I would like to
check two things with you: is scev-aa being maintained in LLVM 3.7? Second
question: I run cfl-aa, and I got a very small number of pointer
disambiguation (no alias) with it. My results for SPEC CINT 2006 follow
below. Is this low number of no alias responses something to be excepted?
Below the results that I got for SPEC with cfl-aa:
TotalQueries | Name | NoAliasResponses
31944 | 470.lbm | 0
49133 | 429.mcf | 42
95098 | 473.astar | 0
146301 | 462.libquantum | 5
428082 | 458.sjeng | 9773
808471 | 433.milc | 2163
1787190 | 450.soplex | 72
2472234 | 401.bzip2 | 229
2574217 | 456.hmmer | 1833
3492577 | 445.gobmk | 8480
3685838 | 444.namd | 616
12943554 | 471.omnetpp | 422
20068605 | 464.h264ref | 8593
23849576 | 400.perlbench | 99316
37779455 | 447.dealII | 11204
186008992 | 403.gcc | 404828
I am finding these results weird because I was expecting a larger
number of no-alias responses. For instance, I got only 404,828 responses
out of 186,008,992 queries. Has anyone gotten similar, or different results?
Regards,
Vitor Mendes Paisante
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+Jia, who worked on CFLAA this summer. Hi! CFLAA was in its very very early stages at the time of the 3.7 release. Even now, as we're getting ready for 3.9, it's still experimental (though hopefully quite a bit more accurate than it was last year). So, yes, in 3.7 and 3.8, CFLAA was *very* conservative. :) If you'd like numbers on what the current CFL implementations can do, you can find them at writeup.pdf here: https://github.com/grievejia/GSoC2016 No clue what the status of scev is/was, so I can't talk much about that. Thanks, George On Mon, Aug 29, 2016 at 9:36 PM, Vitor Paisante via llvm-dev < llvm-dev at lists.llvm.org> wrote:> dear LLVMers, > I am trying to use some of the LLVM alias analyses, and I would like > to check two things with you: is scev-aa being maintained in LLVM 3.7? > Second question: I run cfl-aa, and I got a very small number of pointer > disambiguation (no alias) with it. My results for SPEC CINT 2006 follow > below. Is this low number of no alias responses something to be excepted? > Below the results that I got for SPEC with cfl-aa: > > TotalQueries | Name | NoAliasResponses > 31944 | 470.lbm | 0 > 49133 | 429.mcf | 42 > 95098 | 473.astar | 0 > 146301 | 462.libquantum | 5 > 428082 | 458.sjeng | 9773 > 808471 | 433.milc | 2163 > 1787190 | 450.soplex | 72 > 2472234 | 401.bzip2 | 229 > 2574217 | 456.hmmer | 1833 > 3492577 | 445.gobmk | 8480 > 3685838 | 444.namd | 616 > 12943554 | 471.omnetpp | 422 > 20068605 | 464.h264ref | 8593 > 23849576 | 400.perlbench | 99316 > 37779455 | 447.dealII | 11204 > 186008992 | 403.gcc | 404828 > > I am finding these results weird because I was expecting a larger > number of no-alias responses. For instance, I got only 404,828 responses > out of 186,008,992 queries. Has anyone gotten similar, or different results? > > Regards, > Vitor Mendes Paisante > > > > _______________________________________________ > LLVM Developers mailing list > llvm-dev at lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev > >-------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20160829/ce926092/attachment.html>