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cirelle
2016 Mar 08
5
llvm and clang are getting slower
...g small
'called once' functions out doesn't really help much].
I will have a little play to see if I can identify more of a cuplrit [at
the very least if it's "large basic blocks" or "large functions" that is
the problem] - of course, this could be unrelated and irellevant to the
problem Daniel is pointing at, and it may or may not be easily resolved...
--
Mats
On 8 March 2016 at 18:42, Richard Smith via llvm-dev <
llvm-dev at lists.llvm.org> wrote:
> On Tue, Mar 8, 2016 at 8:13 AM, Rafael Espíndola
> <llvm-dev at lists.llvm.org> wrote:
> &...
2016 Mar 08
9
llvm and clang are getting slower
I have just benchmarked building trunk llvm and clang in Debug,
Release and LTO modes (see the attached scrip for the cmake lines).
The compilers used were clang 3.5, 3.6, 3.7, 3.8 and trunk. In all
cases I used the system libgcc and libstdc++.
For release builds there is a monotonic increase in each version. From
163 minutes with 3.5 to 212 minutes with trunk. For comparison, gcc
5.3.2 takes