Zachary Turner d0e6e5a36e [pdb] Change /DEBUG:GHASH to emit 8 byte hashes. ...

Previously we emitted 20-byte SHA1 hashes.  This is overkill
for identifying debug info records, and has the negative side
effect of making object files bigger and links slower.  By
using only the last 8 bytes of a SHA1, we get smaller object
files and ~10% faster links.

This modifies the format of the .debug$H section by adding a new
value for the hash algorithm field, so that the linker will still
work when its object files have an old format.

Differential Revision: https://reviews.llvm.org/D46855

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@332669 91177308-0d34-0410-b5e6-96231b3b80d8

2018-05-17 21:22:48 +00:00

..

sections.yaml

[pdb] Change /DEBUG:GHASH to emit 8 byte hashes.

2018-05-17 21:22:48 +00:00