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If you have the string /usr/bin, prior to this patch it would not
be quoted by our YAML serializer. But a string like C:\src would
be, due to the presence of a backslash. This makes the quoting
rules of basically every single file path different depending on
the path syntax (posix vs. Windows).
While technically not required by the YAML specification to quote
forward slashes, when the behavior of paths is inconsistent it
makes it difficult to portably write FileCheck lines that will
work with either kind of path.
Differential Revision: https://reviews.llvm.org/D53169
llvm-svn: 344359
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This reverts commit b86c16ad8c97dadc1f529da72a5bb74e9eaed344.
This is being reverted because I forgot to write a useful
commit message, so I'm going to resubmit it with an actual
commit message.
llvm-svn: 344358
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llvm-svn: 344357
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This patch adds per-function size information remarks. Previously, passing
-Rpass-analysis=size-info would only give you per-module changes. By adding
the ability to do this per-function, it's easier to see which functions
contributed the most to size changes.
https://reviews.llvm.org/D51467
llvm-svn: 341588
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ModuleCount = InstrCount was incorrect. It should have been
InstrCount = ModuleCount. This was making it emit an extra, incorrect remark
for Print Module IR.
The test didn't catch this, because it didn't ensure that the only remark
output was from the desired pass. So, it was possible to have an extra remark
come through and not fail. Updated the test so that we ensure that the last
remark that's output comes from the desired pass. This is done by ensuring
that whatever is being read after the last remark is YAML output rather than
some incorrect garbage.
llvm-svn: 341267
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This patch adds a remark which tells the user when a pass changes the number of
IR instructions in a module.
It can be enabled by using -Rpass-analysis=size-info.
The point of this is to make it easier to collect statistics on how passes
modify programs in terms of code size. This is similar in concept to timing
reports, but using a remark-based interface makes it easy to diff changes over
multiple compilations of the same program.
By adding functionality like this, we can see
* Which passes impact code size the most
* How passes impact code size at different optimization levels
* Which pass might have contributed the most to an overall code size
regression
The patch lives in the legacy pass manager, but since it's simply emitting
remarks, it shouldn't be too difficult to adapt the functionality to the new
pass manager as well. This can also be adapted to handle MachineInstr counts in
code gen passes.
https://reviews.llvm.org/D38768
llvm-svn: 332739
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