[PATCH] --print-html-after-all

[Lang Hames]

Oops. Don't hit <tab> in the gmail editor window...

I'll try again when I've actually got my example clear in my head.

- Lang.

On Wed, Jan 21, 2015 at 11:32 AM, Lang Hames <lhames at gmail.com> wrote:

> Hi Pete,
>
> This looks really handy.
>
> On the IO side I'd be inclined to go for a different scheme: Have the
> print routines take a StructuredStreamWrapper that wraps an ostream, and
> then define some stream operators. E.g:
>
> class StructuredStreamWriter {
> public:
>   void visit(StructuredElement &E) { E.visit(*this); }
>
> };
>
>
>
> Cheers,
> Lang.
>
> On Wed, Jan 21, 2015 at 2:19 AM, Pete Cooper <peter_cooper at apple.com>
> wrote:
>
>> Hi all
>>
>> I wanted to put this patch out to gauge interest.  It adds a new flag
>> which behaves just like —print-after-all, but emits the IR with HTML
>> structure.
>>
>> I’ve attached an example output using this command "llc
>> --print-html-after-all test/CodeGen/X86/avx-shuffle-x86_32.ll -o /dev/null
>> -O3 &> file.html”.  Note that ‘opt’ also works similarly.
>>
>> In this file you can see all of the passes LLVM ran, from IR, through
>> selection DAG, and finally the MI passes.  For selection DAG, i made it
>> aggregate all the BBs for each stage.  So you’ll see every BB in the
>> initial DAG, then every BB in the legalized DAG and so on.
>>
>> Things you can interact with are:
>> - Functions are all listed separately in a pull-down box so you can view
>> one at a time
>> - If you have some instructions/values highlighted you can choose to hide
>> anything which isn’t highlighted.  This lets you focus on the
>> instructions/values you’re interested in.
>> - Instructions/SDNode's which aren’t greyed out will highlight all others
>> with the same DebugLoc
>> - IR values with names will highlight all others with the same name
>> across all passes.  Same with vreg's
>> - IR values with numbers will just highlight uses/defs in the pass you
>> are looking at
>> - SDNode’s are printed as N<#> and will only highlight uses/defs in the
>> BB you are looking at
>> - If you click on a use of a value, and non-highlited instructions are
>> hidden, then the def will be made visible, along with the defining
>> instruction/node.
>>
>> The code is quite large, but much of it involves feeding the
>> HTMLStructuredPrinter, a new class, through the various print methods, and
>> adding passes to emit the various constructs with HTML tags.  If there’s
>> interest in landing this then I’m happy to discuss the implementation and
>> split up the code in to multiple patches.  There’s also much more we could
>> do in future, such as use hyperlinks to jump between BBs.
>>
>> Finally, i’m heavily reliant on a new HTML extension
>> "-webkit-column-count” which i’ve only tested on Safari.  If this gets
>> committed, i’d appreciate someone with HTML expertise to clean up that part
>> of the code.
>>
>> Thanks,
>> Pete
>>
>>
>> _______________________________________________
>> llvm-commits mailing list
>> llvm-commits at cs.uiuc.edu
>> http://lists.cs.uiuc.edu/mailman/listinfo/llvm-commits
>>
>>
>
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