This website requires JavaScript.
Explore
Mirrors
Help
Sign In
6502
/
llvm-6502
Watch
1
Star
0
Fork
0
You've already forked llvm-6502
mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced
2024-11-19 01:13:25 +00:00
Code
Issues
Projects
Releases
Wiki
Activity
f7f2d30bb8
llvm-6502
/
test
/
TableGen
/
2006-09-18-LargeInt.td
6 lines
72 B
TableGen
Raw
Normal View
History
Unescape
Escape
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
// RUN: tblgen %s | grep -- 4294901760
new testcase git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30471 91177308-0d34-0410-b5e6-96231b3b80d8
2006-09-18 22:28:07 +00:00
def
X
{
int
Y
=
0xFFFF0000
;
}
Reference in New Issue
Copy Permalink