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-rw-r--r--lib/Target/X86/README-SSE.txt5
1 files changed, 5 insertions, 0 deletions
diff --git a/lib/Target/X86/README-SSE.txt b/lib/Target/X86/README-SSE.txt
index a22cebf165..2de68edad0 100644
--- a/lib/Target/X86/README-SSE.txt
+++ b/lib/Target/X86/README-SSE.txt
@@ -28,6 +28,11 @@ Each operand of the minss is a load. At least one should be folded!
//===---------------------------------------------------------------------===//
+Expand libm rounding functions inline: Significant speedups possible.
+http://gcc.gnu.org/ml/gcc-patches/2006-10/msg00909.html
+
+//===---------------------------------------------------------------------===//
+
When compiled with unsafemath enabled, "main" should enable SSE DAZ mode and
other fast SSE modes.