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to reflect the new license.
We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.
Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.
llvm-svn: 351636
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invalidated Loop/SCC
-print-after IR printing generally can not print the IR unit (Loop or SCC)
which has just been invalidated by the pass. However, when working in -print-module-scope
mode even if Loop was invalidated there is still a valid module that we can print.
Since we can not access invalidated IR unit from AfterPassInvalidated instrumentation
point we can remember the module to be printed *before* pass. This change introduces
BeforePass instrumentation that stores all the information required for module printing
into the stack and then after pass (in AfterPassInvalidated) just print whatever
has been placed on stack.
Reviewed By: philip.pfaffe
Differential Revision: https://reviews.llvm.org/D55278
llvm-svn: 349896
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IR-printing AfterPass instrumentation might be called on a loop
that has just been invalidated. We should skip printing it to
avoid spurious asserts.
Reviewed By: chandlerc, philip.pfaffe
Differential Revision: https://reviews.llvm.org/D54740
llvm-svn: 348887
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Removing deficiency of initial implementation of -print-before-all/-after-all
- it was effectively skipping IR printing for all the SCC passes.
Now LazyCallGraph:SCC gets its IR printed.
Reviewed By: skatkov
Differential Revision: https://reviews.llvm.org/D53270
llvm-svn: 344505
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Enable time-passes functionality through PassInstrumentation callbacks
for passes and analyses.
TimePassesHandler class keeps all the callbacks, the timing data as it
is being collected as well as the stack of currently active timers.
Parts of the fix that might be somewhat unobvious:
- mapping of passes into Timer (TimingData) can not be done per-instance.
PassID name provided into the callback is common for all the pass invocations.
Thus the only way to get a timing with reasonable granularity is to collect
timing data per pass invocation, getting a new timer for each BeforePass.
Hence the key for TimingData uses a pair of <StringRef/unsigned count> to
uniquely identify a pass invocation.
- consequently, this new-pass-manager implementation performs no aggregation
of timing data, reporting timings for each pass invocation separately.
In that it differs from legacy-pass-manager time-passes implementation that
reports timing data aggregated per pass instance.
- pass managers and adaptors are not tracked, similar to how pass managers are
not tracked in legacy time-passes.
- TimerStack tracks timers that are active, each BeforePass pushes the new timer
on stack, each AfterPass pops active timer from stack and stops it.
Reviewers: chandlerc, philip.pfaffe
Differential Revision: https://reviews.llvm.org/D51276
llvm-svn: 343898
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Implementing -print-before-all/-print-after-all/-filter-print-func support
through PassInstrumentation callbacks.
- PrintIR routines implement printing callbacks.
- StandardInstrumentations class provides a central place to manage all
the "standard" in-tree pass instrumentations. Currently it registers
PrintIR callbacks.
Reviewers: chandlerc, paquette, philip.pfaffe
Differential Revision: https://reviews.llvm.org/D50923
llvm-svn: 342896
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