diff options
| -rw-r--r-- | lib/Target/PowerPC/README.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/README.txt b/lib/Target/PowerPC/README.txt index 14a0bc124e..e29dd52e28 100644 --- a/lib/Target/PowerPC/README.txt +++ b/lib/Target/PowerPC/README.txt @@ -551,3 +551,12 @@ void func(unsigned int *ret, float dx, float dy, float dz, float dw) { ===-------------------------------------------------------------------------=== +extract_vector_elt of an arbitrary constant vector can be done with the +following instructions: + +vTemp = vec_splat(v0,2); // 2 is the element the src is in. +vec_ste(&destloc,0,vTemp); + +We can do an arbitrary non-constant value by using lvsr/perm/ste. + +===-------------------------------------------------------------------------=== |