Linked by Thom Holwerda on Thu 7th Oct 2010 19:10 UTC, submitted by tyrione
General Development LLVM 2.8 has been released. The release notes describe this new, ehm, release in greater detail, so head on over and give it a read.
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RE[4]: GCC > LLVM
by Neolander on Fri 8th Oct 2010 18:44 UTC in reply to "RE[3]: GCC > LLVM"
Neolander
Member since:
2010-03-08

A lot of these are outdated. They use GCC 4.3, 4.2, and, would you believe it, one (clamAV) even uses GCC 3.4 ! ^^'

The sole test using up-to-date GCC is the 2010 one, and it shows that GCC 4.5 is often pretty close to ICC in terms of performance, although compilation is much slower.

Two concerns :
-This was a svn, pre-beta build of GCC, so compilation performance has probably improved a bit (though one should test this).
-Also, I would like to know how code generated by ICC behaves on AMD processors.

You do have a point about ICC not being outdated, and being faster on at least some Intel processors, though.

Edited 2010-10-08 18:48 UTC

Reply Parent Score: 2

RE[5]: GCC > LLVM
by nt_jerkface on Fri 8th Oct 2010 19:13 in reply to "RE[4]: GCC > LLVM"
nt_jerkface Member since:
2009-08-26

A lot of these are outdated. They use GCC 4.3, 4.2, and, would you believe it, one (clamAV) even uses GCC 3.4 ! ^^'

The sole test using up-to-date GCC is the 2010 one, and it shows that GCC 4.5 is often pretty close to ICC in terms of performance, although compilation is much slower.


It at least shows that the common belief is well founded. If you want to find and show some newer benchmarks then by all means please do, I don't have an emotional attachment to any compiler.

Reply Parent Score: 2

RE[6]: GCC > LLVM
by Neolander on Fri 8th Oct 2010 21:20 in reply to "RE[5]: GCC > LLVM"
Neolander Member since:
2010-03-08

I don't have an emotional attachment to any compiler.

I don't have such attachment either, it's just that I have some sympathy towards GCC because...
-It is the sole C/C++ compiler producing high-performance code which I know of that's not owned by a megalomaniac mega-corporation or a processor manufacturer.
-It has some very useful extensions.
-It works everywhere and for just about every target.
-It's heavily covered by documentation on the internet.
-It's licensed under GPL, which I personally like better than BSD licensing.

Now, if they could only copy LLVM's nice warnings... ;)

Edited 2010-10-08 21:21 UTC

Reply Parent Score: 2