7 Commits

Author SHA1 Message Date
Reid Kleckner
1689efb4d2 Reland "[CodeView] Use assembler directives for line tables"
This reverts commit r259126 and relands r259117.

This time with updated library dependencies.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259130 91177308-0d34-0410-b5e6-96231b3b80d8
2016-01-29 00:49:42 +00:00
Reid Kleckner
ae8e13919a Revert "[CodeView] Use assembler directives for line tables"
This reverts commit r259117.

The LineInfo constructor is defined in the codeview library and we have
to link against it now. Doing that isn't trivial, so reverting for now.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259126 91177308-0d34-0410-b5e6-96231b3b80d8
2016-01-29 00:13:28 +00:00
Reid Kleckner
200dc330a0 [CodeView] Use assembler directives for line tables
Adds a new family of .cv_* directives to LLVM's variant of GAS syntax:

- .cv_file: Similar to DWARF .file directives

- .cv_loc: Similar to the DWARF .loc directive, but starts with a
  function id. CodeView line tables are emitted by function instead of
  by compilation unit, so we needed an extra field to communicate this.
  Rather than overloading the .loc direction further, we decided it was
  better to have our own directive.

- .cv_stringtable: Emits the codeview string table at the current
  position. Currently this just contains the filenames as
  null-terminated strings.

- .cv_filechecksums: Emits the file checksum table for all files used
  with .cv_file so far. There is currently no support for emitting
  actual checksums, just filenames.

This moves the line table emission code down into the assembler.  This
is in preparation for implementing the inlined call site line table
format. The inline line table format encoding algorithm requires knowing
the absolute code offsets, so it must run after the assembler has laid
out the code.

David Majnemer collaborated on this patch.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@259117 91177308-0d34-0410-b5e6-96231b3b80d8
2016-01-28 23:31:52 +00:00
Rafael Espindola
715bccae4a Add a RAW mode to StringTableBuilder.
In this mode it just tries to tail merge the strings without imposing any other
format constrains. It will not, for example, add a null byte between them.

Also add support for keeping a tentative size and offset if we decide to
not optimize after all.

This will be used shortly in lld for merging SHF_STRINGS sections.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@251153 91177308-0d34-0410-b5e6-96231b3b80d8
2015-10-23 21:48:05 +00:00
Chandler Carruth
1b279144ec [cleanup] Re-sort all the #include lines in LLVM using
utils/sort_includes.py.

I clearly haven't done this in a while, so more changed than usual. This
even uncovered a missing include from the InstrProf library that I've
added. No functionality changed here, just mechanical cleanup of the
include order.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@225974 91177308-0d34-0410-b5e6-96231b3b80d8
2015-01-14 11:23:27 +00:00
Hans Wennborg
4edcbaec90 WinCOFFObjectWriter: optimize the string table for common suffices
This is a follow-up from r207670 which did the same for ELF.

Differential Revision: http://reviews.llvm.org/D5530

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218636 91177308-0d34-0410-b5e6-96231b3b80d8
2014-09-29 22:43:20 +00:00
Rafael Espindola
7413fefb8b Invert the MC -> Object dependency.
Now that we have a lib/MC/MCAnalysis, the dependency was there just because
of two helper classes. Move the two over to MC.

This will allow IRObjectFile to parse inline assembly.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@212248 91177308-0d34-0410-b5e6-96231b3b80d8
2014-07-03 02:01:39 +00:00