Add a note.

llvm-svn: 31650
2006-11-10 22:09:17 +00:00 · 2006-11-10 22:09:17 +00:00 · 915026cdc3
parent 5b725a71a9
commit 915026cdc3
1 changed files with 6 additions and 0 deletions
--- a/llvm/lib/Target/X86/README-SSE.txt
+++ b/llvm/lib/Target/X86/README-SSE.txt
@ -551,3 +551,9 @@ void test4(vectorfloat *F, float *f) {

 Apply the same transformation that merged four float into a single 128-bit load
 to loads from constant pool.
+
+//===---------------------------------------------------------------------===//
+
+Floating point max / min are commutable when -enable-unsafe-fp-path is
+specified. We should turn int_x86_sse_max_ss and X86ISD::FMIN etc. into other
+nodes which are selected to max / min instructions that are marked commutable.