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Author	SHA1	Message	Date
Mehdi Amini	f6071e14c5	[NFC] Header cleanup Removed some unused headers, replaced some headers with forward class declarations. Found using simple scripts like this one: clear && ack --cpp -l '#include "llvm/ADT/IndexedMap.h"' \| xargs grep -L 'IndexedMap[<]' \| xargs grep -n --color=auto 'IndexedMap' Patch by Eugene Kosov <claprix@yandex.ru> Differential Revision: http://reviews.llvm.org/D19219 From: Mehdi Amini <mehdi.amini@apple.com> git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@266595 91177308-0d34-0410-b5e6-96231b3b80d8	2016-04-18 09:17:29 +00:00
David Majnemer	3d58bd6369	[MC] Add support for generating COFF CRCs COFF sections are accompanied with an auxiliary symbol which includes a checksum. This checksum used to be filled with just zero but this seems to upset LINK.exe when it is processing a /INCREMENTAL link job. Instead, fill the CheckSum field with the JamCRC of the section contents. This matches MSVC's behavior. This fixes PR19666. N.B. A rather simple implementation of JamCRC is given. It implements a byte-wise calculation using the method given by Sarwate. There are implementations with higher throughput like slice-by-eight and making use of PCLMULQDQ. We can switch to one of those techniques if it turns out to be a significant use of time. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246590 91177308-0d34-0410-b5e6-96231b3b80d8	2015-09-01 21:23:58 +00:00

Author

SHA1

Message

Date

Mehdi Amini

f6071e14c5

[NFC] Header cleanup

Removed some unused headers, replaced some headers with forward class declarations.

Found using simple scripts like this one:
clear && ack --cpp -l '#include "llvm/ADT/IndexedMap.h"' | xargs grep -L 'IndexedMap[<]' | xargs grep -n --color=auto 'IndexedMap'

Patch by Eugene Kosov <claprix@yandex.ru>

Differential Revision: http://reviews.llvm.org/D19219

From: Mehdi Amini <mehdi.amini@apple.com>

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@266595 91177308-0d34-0410-b5e6-96231b3b80d8

2016-04-18 09:17:29 +00:00

David Majnemer

3d58bd6369

[MC] Add support for generating COFF CRCs

COFF sections are accompanied with an auxiliary symbol which includes a
checksum.  This checksum used to be filled with just zero but this seems
to upset LINK.exe when it is processing a /INCREMENTAL link job.
Instead, fill the CheckSum field with the JamCRC of the section
contents.  This matches MSVC's behavior.

This fixes PR19666.

N.B.  A rather simple implementation of JamCRC is given.  It implements
a byte-wise calculation using the method given by Sarwate.  There are
implementations with higher throughput like slice-by-eight and making
use of PCLMULQDQ.  We can switch to one of those techniques if it turns
out to be a significant use of time.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@246590 91177308-0d34-0410-b5e6-96231b3b80d8

2015-09-01 21:23:58 +00:00

2 Commits