6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-04-03 18:32:50 +00:00
Code Issues Projects Releases Wiki Activity

Observation of rematerialization.

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41809 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2007-09-10 22:11:18 +00:00
parent bf8ae84a21
commit 2d9823875a
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
lib/CodeGen/README.txt
View File

@ -143,3 +143,8 @@ load [T + 7]
...
load [T + 15]
//===---------------------------------------------------------------------===//
It's not always a good idea to choose rematerialization over spilling. If all
the load / store instructions would be folded then spilling is cheaper because
it won't require new live intervals / registers. See 2003-05-31-LongShifts for
an example.