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Author SHA1 Message Date
David Majnemer 8bce66b093 CodeGen: Stick constant pool entries in COMDAT sections for WinCOFF 
COFF lacks a feature that other object file formats support: mergeable
sections.

To work around this, MSVC sticks constant pool entries in special COMDAT
sections so that each constant is in it's own section.  This permits
unused constants to be dropped and it also allows duplicate constants in
different translation units to get merged together.

This fixes PR20262.

Differential Revision: http://reviews.llvm.org/D4482

llvm-svn: 213006
 2014-07-14 22:57:27 +00:00
Nadav Rotem fdce33a495 The LIT tests below do not specify the exact cpu model and fail on AVX2 machines, because we select different instructions such as vbroadcast, new shuffles, etc. 
Patch by Michael Liao.

llvm-svn: 160129
 2012-07-12 13:45:15 +00:00
Rafael Espindola bb893fea6b Add r149110 back with a fix for when the vector and the int have the same 
width.

llvm-svn: 149151
 2012-01-27 23:33:07 +00:00
Rafael Espindola a4062624d1 Revert r149110 and add a testcase that was crashing since that revision. 
Unfortunately I also had to disable constant-pool-sharing.ll the code it tests has been
updated to use the IL logic.

llvm-svn: 149148
 2012-01-27 22:42:48 +00:00
NAKAMURA Takumi 3bfc830a9a Relax expressions and add explicit triplets -linux and -win32. 
llvm-svn: 126199
 2011-02-22 07:19:37 +00:00
Dan Gohman 4fee6f3bdd Start function numbering at 0. 
llvm-svn: 101638
 2010-04-17 16:29:15 +00:00
Dan Gohman 75d6a4afd2 Allow constants of different types to share constant pool entries 
if they have compatible encodings.

llvm-svn: 85359
 2009-10-28 01:12:16 +00:00