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authorChris Lattner <sabre@nondot.org>2006-03-28 18:56:23 +0000
committerChris Lattner <sabre@nondot.org>2006-03-28 18:56:23 +0000
commitd732a2915bcfe52b5bcbd364ca45c426f3b214af (patch)
treee0065859c4f449db4153d012f27632e66527574c /lib/Target/PowerPC/README_ALTIVEC.txt
parentb3e7be25be0b6fafae5b5301df40e09a7cae0ede (diff)
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27227 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/PowerPC/README_ALTIVEC.txt')
-rw-r--r--lib/Target/PowerPC/README_ALTIVEC.txt10
1 files changed, 10 insertions, 0 deletions
diff --git a/lib/Target/PowerPC/README_ALTIVEC.txt b/lib/Target/PowerPC/README_ALTIVEC.txt
index 7754f4c..d4c944b 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.
+
+//===----------------------------------------------------------------------===//