RPCSX/llvm
1
0
Fork 0
mirror of https://github.com/RPCSX/llvm.git synced 2025-03-04 19:07:26 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

add a nate note

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@30399 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-09-15 20:31:36 +00:00
parent 42fe4957a9
commit cbce2f6c1b
1 changed files with 6 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
lib/Target/README.txt
View File

@ -240,4 +240,10 @@ _bar: addic r3,r3,-1
subfe r3,r3,r3
blr
//===---------------------------------------------------------------------===//
Legalize should lower ctlz like this:
ctlz(x) = popcnt((x-1) & ~x)
on targets that have popcnt but not ctlz. itanium, what else?