gcc:

[pf3gnuchains/gcc-fork.git] / gcc / doc / passes.texi

diff --git a/gcc/doc/passes.texi b/gcc/doc/passes.texi
index 8e12366..ad6110e 100644 (file)
--- a/gcc/doc/passes.texi
+++ b/gcc/doc/passes.texi
@@ -354,7 +354,7 @@ This pass transforms tail recursion into a loop.  It is located in
 
 This pass sinks stores and assignments down the flowgraph closer to it's
 use point.  The pass is located in @file{tree-ssa-sink.c} and is
-described by @code{pass_sink_code}
+described by @code{pass_sink_code}.
 
 @item Partial redundancy elimination
 
@@ -362,6 +362,12 @@ This pass eliminates partially redundant computations, as well as
 performing load motion.  The pass is located in @file{tree-ssa-pre.c}
 and is described by @code{pass_pre}.
 
+Just before partial redundancy elimination, if
+@option{-funsafe-math-optimizations} is on, GCC tries to convert
+divisions to multiplications by the reciprocal.  The pass is located
+in @file{tree-ssa-math-opts.c} and is described by
+@code{pass_cse_reciprocal}.
+
 @item Loop optimization
 
 The main driver of the pass is placed in @file{tree-ssa-loop.c}