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| -rw-r--r-- | lib/Target/PowerPC/README_ALTIVEC.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/README_ALTIVEC.txt b/lib/Target/PowerPC/README_ALTIVEC.txt index 7754f4c13c..d4c944b6de 100644 --- a/lib/Target/PowerPC/README_ALTIVEC.txt +++ b/lib/Target/PowerPC/README_ALTIVEC.txt @@ -134,4 +134,14 @@ This would fix two problems: 2. Identical operations in different types are not getting CSE'd (e.g. { 0U, 0U, 0U, 0U } and {0.0, 0.0, 0.0, 0.0}. +//===----------------------------------------------------------------------===// + +Two identical comparisons in predicate and nonpredicate form like this: + +a = vec_cmpb(x, y); +b = vec_any_out(x, y); + +Should turn into one "." compare instruction, not a dot and "nondot" form. + +//===----------------------------------------------------------------------===// |