hanchenye-llvm-project/llvm/test/TableGen
Dan Gohman ca0546facc 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.

llvm-svn: 57663
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
CStyleComment.td
DagDefSubst.ll
DagIntSubst.ll
ForwardRef.td
GeneralList.td
Include.inc
Include.td
IntBitInit.td
LazyChange.td
ListConversion.td
ListSlices.td
MultiClass.td
SuperSubclassSameName.td
TargetInstrInfo.td
TemplateArgRename.td
Tree.td
TreeNames.td
UnterminatedComment.td
dg.exp
nested-comment.td
strconcat.td