RPCS3/llvm-mirror
1
0
Fork 0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2025-02-01 05:01:59 +01:00
Code Issues Projects Releases Wiki Activity

Added some isel ideas.

Browse Source 
llvm-svn: 24757
This commit is contained in:
Evan Cheng 2005-12-17 01:25:19 +00:00
parent 5d90b26707
commit 19550821d1
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?