llvm-6502/test/TableGen
Dan Gohman 63f97201dc Fun x86 encoding tricks: when adding an immediate value of 128,
use a SUB instruction instead of an ADD, because -128 can be
encoded in an 8-bit signed immediate field, while +128 can't be.
This avoids the need for a 32-bit immediate field in this case.

A similar optimization applies to 64-bit adds with 0x80000000,
with the 32-bit signed immediate field.

To support this, teach tablegen how to handle 64-bit constants.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@57663 91177308-0d34-0410-b5e6-96231b3b80d8
2008-10-17 01:33:43 +00:00
..
2003-08-03-PassCode.td
2006-09-18-LargeInt.td Fun x86 encoding tricks: when adding an immediate value of 128, 2008-10-17 01:33:43 +00:00
AnonDefinitionOnDemand.td
BitsInitOverflow.td For all RUN lines starting with "not", redirect stderr to /dev/null so tests 2008-06-10 12:57:32 +00:00
CStyleComment.td
DagDefSubst.ll
DagIntSubst.ll
dg.exp
ForwardRef.td
GeneralList.td
Include.inc
Include.td
IntBitInit.td
LazyChange.td
ListConversion.td
ListSlices.td
MultiClass.td
nested-comment.td
strconcat.td
SuperSubclassSameName.td
TargetInstrInfo.td
TemplateArgRename.td
Tree.td
TreeNames.td
UnterminatedComment.td For all RUN lines starting with "not", redirect stderr to /dev/null so tests 2008-06-10 12:57:32 +00:00