Commit Graph

9 Commits

Author SHA1 Message Date
Fangrui Song 98b9338588 [Debugify] Port -debugify-each to NewPM
Preemptively switch 2 tests to the new PM

Reviewed By: aeubanks

Differential Revision: https://reviews.llvm.org/D90365
2020-11-02 08:16:43 -08:00
Vedant Kumar 122a6bfb07 [Debugify] Strip added metadata in the -debugify-each pipeline
Summary:
Share logic to strip debugify metadata between the IR and MIR level
debugify passes. This makes it simpler to hunt for bugs by diffing IR
with vs. without -debugify-each turned on.

As a drive-by, fix an issue causing CallGraphNodes to become invalid
when a dead llvm.dbg.value prototype is deleted.

Reviewers: dsanders, aprantl

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D77915
2020-04-13 10:55:17 -07:00
Vedant Kumar a9e27312b8 [Debugify] Add a quiet mode to suppress warnings
Suppressing warning output and module dumps significantly speeds up
fuzzing with `opt -debugify-each`.

llvm-svn: 334117
2018-06-06 19:05:41 +00:00
Vedant Kumar b6ed992de0 [opt] Introduce -strip-named-metadata
This renames and generalizes -strip-module-flags to erase all named
metadata from a module. This makes it easier to diff IR.

llvm-svn: 333977
2018-06-05 00:56:08 +00:00
Vedant Kumar adbd27a599 [Debugify] Don't apply DI before the bitcode writer pass
Applying synthetic debug info before the bitcode writer pass has no
testing-related purpose. This commit prevents that from happening.

It also adds tests which check that IR produced with/without
-debugify-each enabled is identical after stripping. This makes it
possible to check that individual passes (or full pipelines) are
invariant to debug info.

llvm-svn: 333861
2018-06-04 00:11:49 +00:00
Anastasis Grammenos d6c6678766 [Debugify] Print the output to stderr
Currently debugify prints it's output to stdout,
with this patch all the output generated goes to stderr.

This change lets us use debugify without taking away
the ability to pipe the output to other llvm tools.

llvm-svn: 332642
2018-05-17 18:19:58 +00:00
Vedant Kumar 5c6b3fb8fb [Debugify] Tighten up the test for -debugify-each, NFC
In post-commit review for r332416, Paul Robinson pointed out that the
test for -debugify-each is not checking what it needs to.

This commit tightens up the test.

llvm-svn: 332497
2018-05-16 17:30:58 +00:00
Anastasis Grammenos b4344c66aa [Debugfiy] Print the pass name next to the result
CheckDebugify now prints the pass name right next to the result of the check.

Differential Revision: https://reviews.llvm.org/D46908

llvm-svn: 332416
2018-05-15 23:38:05 +00:00
Vedant Kumar 595ba1d548 [Debugify] Add -debugify-each for testing each pass in a pipeline
This adds a -debugify-each mode to opt which, when enabled, wraps each
{Module,Function}Pass in a pipeline with logic to add, check, and strip
synthetic debug info for testing purposes.

This mode can be used to test complex pipelines for debug info bugs, or
to collect statistics about the number of debug values & locations lost
throughout various stages of a pipeline.

Patch by Son Tuan Vu!

Differential Revision: https://reviews.llvm.org/D46525

llvm-svn: 332312
2018-05-15 00:29:27 +00:00