maxjhandsome
/
llvm-project
forked from OSchip/llvm-project
1
0
Fork 0
Code Issues Pull Requests Packages Releases Wiki Activity

Remove the entry about using movapd for SSE reg-reg moves. 

llvm-svn: 26245
This commit is contained in:
Evan Cheng 2006-02-17 00:00:58 +00:00
parent eb7b3380fd
commit db1dbbe8d6
1 changed files with 0 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
llvm/lib/Target/X86/README.txt
View File

@ -356,12 +356,6 @@ This may just be a matter of using 'test' to write bigger patterns for X86cmp.
//===---------------------------------------------------------------------===//
Evaluate whether using movapd for SSE reg-reg moves is faster than using
movsd/movss for them. It may eliminate false partial register dependences by
writing the whole result register.
//===---------------------------------------------------------------------===//
SSE should implement 'select_cc' using 'emulated conditional moves' that use
pcmp/pand/pandn/por to do a selection instead of a conditional branch: