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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27360 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2006-04-02 07:20:00 +00:00
parent bbe77de450
commit 220d2b89d6
1 changed files with 9 additions and 0 deletions
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9
lib/Target/PowerPC/README.txt
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@ -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.
===-------------------------------------------------------------------------===