[llvm-commits] [llvm] r131824 - /llvm/trunk/tools/opt/opt.cpp
Cameron Zwarich
zwarich at apple.com
Sat May 21 23:51:07 PDT 2011
On May 21, 2011, at 11:49 PM, Chris Lattner wrote:
> On May 21, 2011, at 11:28 PM, Cameron Zwarich wrote:
>
>> On May 21, 2011, at 11:27 PM, Chris Lattner wrote:
>>
>>> On May 21, 2011, at 11:02 PM, Cameron Zwarich wrote:
>>>
>>>> This changed the opt pass order by removing the global passes that run first:
>>>>
>>>> Pass Arguments: -targetdata -no-aa -tbaa -basicaa -simplifycfg -domtree -scalarrepl -early-cse
>>>> Target Data Layout
>>>> No Alias Analysis (always returns 'may' alias)
>>>> Type-Based Alias Analysis
>>>> Basic Alias Analysis (stateless AA impl)
>>>> ModulePass Manager
>>>> FunctionPass Manager
>>>> Simplify the CFG
>>>> Dominator Tree Construction
>>>> Scalar Replacement of Aggregates (DT)
>>>> Early CSE
>>>>
>>>> In the future, it would be a good idea to compare -debug-pass=Structure output when making changes that are supposed to preserve existing behavior. It would also be good to check that clang still includes these passes.
>>>
>>> Hi Cameron,
>>>
>>> What behavior are you saying that I'm changing here? "opt" has a bunch of different codepaths.
>>
>> opt -std-compile-opts -debug-pass=Structure <file>
>
> -std-compile-opts is the same before and after my patch. You're right though that -O1/2/3 stopped printing this stuff (though the passes are still being run). Fixed in r131843. Thanks,
Oh, good thing it was just a printing issue. Now the bots won't all get random codegen changes tonight. Thanks!
Cameron
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