6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-08-19 19:29:31 +00:00
Code Issues Projects Releases Wiki Activity

Added some isel ideas.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@24757 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2005-12-17 01:25:19 +00:00
parent aed7c721df
commit 8dee8cca3a
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
lib/Target/X86/README.txt
View File

@ -88,3 +88,17 @@ into:
movzbl %dil, %eax
xorl $1, %eax
ret
//===---------------------------------------------------------------------===//
Some isel ideas:
1. Dynamic programming based approach when compile time if not an
issue.
2. Code duplication (addressing mode) during isel.
3. Other ideas from "Register-Sensitive Selection, Duplication, and
Sequencing of Instructions".
//===---------------------------------------------------------------------===//
Should we promote i16 to i32 to avoid partial register update stalls?