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> There are numerous improvements to the PowerPC target in this release That's interesting, who are the current PPC users contributing to LLVM? Is this all fro

> There are numerous improvements to the PowerPC target in this release That's interesting, who are the current PPC users contributing to LLVM? Is this all from IBM?

jlebar 11y ago
Highly quick-and-dirty: $ git log origin/release_37..origin/release_38 --no-merges -i --grep \ 'ppc\|power pc' --pretty='%ae' | grep --only-matching '@.*' | sort | \ uniq -c | sort -rn 16 @anl.gov 11 @gmail.com 7 @linux.vnet.ibm.com 4 @iteratee.net 3 @ca.ibm.com 2 @hanshq.net 2 @de.ibm.com 2 @apple.com 1 @samsung.com 1 @linaro.org 1 @imgtec.com 1 @googlemail.com 1 @codeaurora.org You'd have to look at the individual addresses to disambiguate who @gmail.com and @googlemail.com are; at least 5 are from a Googler. @iteratee.net is also a Googler.
- ambrop7 11y ago
  The @anl.gov is probably this: https://www.alcf.anl.gov/bgclang-compiler https://www.alcf.anl.gov/bgclang-compiler See: https://en.wikipedia.org/wiki/Blue_Gene#Blue_Gene.2FQ https://en.wikipedia.org/wiki/Blue_Gene#Blue_Gene.2FQ "The Blue Gene/Q Compute chip is an 18 core chip. The 64-bit PowerPC A2 processor cores are 4-way simultaneously multithreaded, and run at 1.6 GHz."
- dumael 11y ago
  As I know, some of those contributors are just making systemic changes throughout LLVM, which would require touching the PowerPC backend. I'm not at all surprised at the @[a-z.]+.ibm.com contributors, the @anl.gov is the code maintainer and highly visible contributor. The Argonne National Laboratory run a PowerPC based supercomputer afaik.
deleted 11y ago
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kev009 11y ago
It seems a bit low considering IBM is funneling $1 _B_illion into Linux on POWER projects. IBM has long ties to GCC, but LLVM has captured the code generation library market even where gcc is used as the system or application compiler so it's more relevant than ever for them to put some people on it.
- ahazred8ta 11y ago
  IBM makes a lot of announcements with price tags. Their track record says most of that money is spent on developing business applications RUNNING on Linux. Some is spent on FLOSS code contributions, but not the whole $1B.

> There are numerous improvements to the PowerPC target in this release That's interesting, who are the current PPC users contributing to LLVM? Is this all from IBM?

jlebar 11y ago

Highly quick-and-dirty: $ git log origin/release_37..origin/release_38 --no-merges -i --grep \ 'ppc\|power pc' --pretty='%ae' | grep --only-matching '@.*' | sort | \ uniq -c | sort -rn 16 @anl.gov 11 @gmail.com 7 @linux.vnet.ibm.com 4 @iteratee.net 3 @ca.ibm.com 2 @hanshq.net 2 @de.ibm.com 2 @apple.com 1 @samsung.com 1 @linaro.org 1 @imgtec.com 1 @googlemail.com 1 @codeaurora.org You'd have to look at the individual addresses to disambiguate who @gmail.com and @googlemail.com are; at least 5 are from a Googler. @iteratee.net is also a Googler.

ambrop7 11y ago
The @anl.gov is probably this: https://www.alcf.anl.gov/bgclang-compiler https://www.alcf.anl.gov/bgclang-compiler See: https://en.wikipedia.org/wiki/Blue_Gene#Blue_Gene.2FQ https://en.wikipedia.org/wiki/Blue_Gene#Blue_Gene.2FQ "The Blue Gene/Q Compute chip is an 18 core chip. The 64-bit PowerPC A2 processor cores are 4-way simultaneously multithreaded, and run at 1.6 GHz."
dumael 11y ago
As I know, some of those contributors are just making systemic changes throughout LLVM, which would require touching the PowerPC backend. I'm not at all surprised at the @[a-z.]+.ibm.com contributors, the @anl.gov is the code maintainer and highly visible contributor. The Argonne National Laboratory run a PowerPC based supercomputer afaik.

deleted 11y ago

[deleted]

kev009 11y ago

It seems a bit low considering IBM is funneling $1 _B_illion into Linux on POWER projects. IBM has long ties to GCC, but LLVM has captured the code generation library market even where gcc is used as the system or application compiler so it's more relevant than ever for them to put some people on it.

ahazred8ta 11y ago
IBM makes a lot of announcements with price tags. Their track record says most of that money is spent on developing business applications RUNNING on Linux. Some is spent on FLOSS code contributions, but not the whole $1B.