6502/llvm-6502
1
0
Fork 0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2025-01-10 02:36:06 +00:00
Code Issues Projects Releases Wiki Activity

new example

Browse Source 
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41318 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-08-23 15:16:03 +00:00
parent 2f597bd09e
commit aabd0359a3
1 changed files with 17 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
lib/Target/PowerPC/README.txt
View File

@ -117,6 +117,23 @@ mode.
Note that this (and the static variable version) is discussed here for GCC:
http://gcc.gnu.org/ml/gcc-patches/2006-02/msg00133.html
Here's another example (the sgn function):
double testf(double a) {
return a == 0.0 ? 0.0 : (a > 0.0 ? 1.0 : -1.0);
}
it produces a BB like this:
LBB1_1: ; cond_true
lis r2, ha16(LCPI1_0)
lfs f0, lo16(LCPI1_0)(r2)
lis r2, ha16(LCPI1_1)
lis r3, ha16(LCPI1_2)
lfs f2, lo16(LCPI1_2)(r3)
lfs f3, lo16(LCPI1_1)(r2)
fsub f0, f0, f1
fsel f1, f0, f2, f3
blr
===-------------------------------------------------------------------------===
PIC Code Gen IPO optimization: