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Allow Polly at all optimization levels 

Restricting Polly to -O3 does not make a lot of sense as it is opt-in anyway
and users who specifically request it should get it. If this causes performance
problems we should rather address them by scheduling the right cleanup passes
then just prevent the user from trying.

Also restricting Polly to -O3 made bugpoint not work with the -O3 flag and polly
enabled.

llvm-svn: 200208
This commit is contained in:
Tobias Grosser 2014-01-27 10:44:21 +00:00
parent 24d7e669b3
commit f20210940c
1 changed files with 0 additions and 10 deletions
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10
polly/lib/RegisterPasses.cpp
View File

@ -307,16 +307,6 @@ registerPollyEarlyAsPossiblePasses(const llvm::PassManagerBuilder &Builder,
if (!shouldEnablePolly(Builder.OptLevel))
return;
// We only run Polly at optimization level '-O3'.
//
// This is to ensure that scalar overhead that may be introduced by Polly is
// properly cleaned up by LLVM later on. We may reinvestigate this decision
// later on.
if (Builder.OptLevel != 3) {
errs() << "Polly should only be run with -O3. Disabling Polly.\n";
return;
}
registerPollyPasses(PM);
}