llvm-project.git/clang/test/CodeGen/split-debug-single-file.c, branch users/nico/python-2

[test] Remove tests pinned to the legacy PM

2021-10-18T23:40:46+00:00

Now that the legacy PM is deprecated for the optimization pipeline, we
can start deleting legacy PM tests.

For tests that test both PMs, merge the RUN lines.
Delete tests specific to the legacy PM.

[Clang] Remove unused -split-dwarf and obsolete -enable-split-dwarf

2019-06-26T21:36:35+00:00

Summary:
The changes in D59673 made the choice redundant, since we can achieve
single-file split DWARF just by not setting an output file name.
Like llc we can also derive whether to enable Split DWARF from whether
-split-dwarf-file is set, so we don't need the flag at all anymore.

The test CodeGen/split-debug-filename.c distinguished between having set
or not set -enable-split-dwarf with -split-dwarf-file, but we can
probably just always emit the metadata into the IR.

The flag -split-dwarf wasn't used at all anymore.

Reviewers: dblaikie, echristo

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D63167

llvm-svn: 364479

[Clang] Harmonize Split DWARF options with llc

2019-06-15T15:38:51+00:00

Summary:
With Split DWARF the resulting object file (then called skeleton CU)
contains the file name of another ("DWO") file with the debug info.
This can be a problem for remote compilation, as it will contain the
name of the file on the compilation server, not on the client.

To use Split DWARF with remote compilation, one needs to either

* make sure only relative paths are used, and mirror the build directory
  structure of the client on the server,
* inject the desired file name on the client directly.

Since llc already supports the latter solution, we're just copying that
over. We allow setting the actual output filename separately from the
value of the DW_AT_[GNU_]dwo_name attribute in the skeleton CU.

Fixes PR40276.

Reviewers: dblaikie, echristo, tejohnson

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D59673

llvm-svn: 363496

[Clang] Rename -split-dwarf-file to -split-dwarf-output

2019-06-15T14:07:43+00:00

Summary:
This is the first in a series of changes trying to align clang -cc1
flags for Split DWARF with those of llc. The unfortunate side effect of
having -split-dwarf-output for single file Split DWARF will disappear
again in a subsequent change.

The change is the result of a discussion in D59673.

Reviewers: dblaikie, echristo

Reviewed By: dblaikie

Differential Revision: https://reviews.llvm.org/D63130

llvm-svn: 363494

[clang][NewPM] Fix split debug test

2019-06-13T17:40:03+00:00

This contains the part of D62225 which fixes CodeGen/split-debug-single-file.c
by not placing .dwo sections when using -enable-split-dwarf=split.

Differential Revision: https://reviews.llvm.org/D63168

llvm-svn: 363281

Change llvm-{objdump,readobj} -long-option to --long-option or well-known short options in tests. NFC

2019-05-01T09:30:45+00:00

llvm-svn: 359662

[Clang] - Add '-gsplit-dwarf[=split,=single]' version for '-gsplit-dwarf' option.

2018-11-14T09:22:16+00:00

The DWARF5 specification says(Appendix F.1):

"The sections that do not require relocation, however, can be
written to the relocatable object (.o) file but ignored by the
linker or they can be written to a separate DWARF object (.dwo)
file that need not be accessed by the linker."

The first part describes a single file split DWARF feature and there
is no way to trigger this behavior atm. 
Fortunately, no many changes are required to keep *.dwo sections
in a .o, the patch does that.

Differential revision: https://reviews.llvm.org/D52296

llvm-svn: 346837