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3 Commits

Author SHA1 Message Date
Craig Topper
93c9401dff [x86] Add basic support for .code16 
This is not really expected to work right yet. Mostly because we will
still emit the OpSize (0x66) prefix in all the wrong places, along with
a number of other corner cases. Those will all be fixed in the subsequent
commits.

Patch from David Woodhouse.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198584 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-06 04:55:54 +00:00
Craig Topper
074b501c17 Fix ModR/M byte output for 16-bit addressing modes (PR18220) 
Add some tests to validate correct register selection, including a fix
to an existing test which was requiring the *wrong* output.

Patch from David Woodhouse.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@198566 91177308-0d34-0410-b5e6-96231b3b80d8
 2014-01-05 19:40:56 +00:00
Joerg Sonnenberger
4fd3d29275 Fix generation of the address size override prefix. Add assertions for 
the invalid cases. At least 16bit operand in 64bit mode is currently not
rejected in the parser.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@153166 91177308-0d34-0410-b5e6-96231b3b80d8
 2012-03-21 05:48:07 +00:00