[Documentation] Fix latency in pipeline description example

	2017-11-09  Luis Machado  <luis.machado@linaro.org>

	gcc/
	* doc/md.texi (Specifying processor pipeline description): Fix
	incorrect latency for the div instruction example.

From-SVN: r254680

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 20391e3743202650352879578436a40c54fdcca3..c31208aa7bc9ac69549b54ee2b96b4192bd110e2 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2017-11-13  Luis Machado  <luis.machado@linaro.org>
+
+       * doc/md.texi (Specifying processor pipeline description): Fix
+       incorrect latency for the div instruction example.
+
 2017-11-13  Jakub Jelinek  <jakub@redhat.com>
 
        PR tree-optimization/78821

diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi
index c4c113850fe1f04cce1caa4bb07f610d123eb59a..9806b65d1cfef23ce1d352b5a508c0517e464edb 100644 (file)
--- a/gcc/doc/md.texi
+++ b/gcc/doc/md.texi
@@ -9617,7 +9617,7 @@ their result is ready in two cycles.  The simple integer insns are
 issued into the first pipeline unless it is reserved, otherwise they
 are issued into the second pipeline.  Integer division and
 multiplication insns can be executed only in the second integer
-pipeline and their results are ready correspondingly in 8 and 4
+pipeline and their results are ready correspondingly in 9 and 4
 cycles.  The integer division is not pipelined, i.e.@: the subsequent
 integer division insn can not be issued until the current division
 insn finished.  Floating point insns are fully pipelined and their
@@ -9634,7 +9634,7 @@ incurred.  To describe all of this we could specify
 (define_insn_reservation "mult" 4 (eq_attr "type" "mult")
                          "i1_pipeline, nothing*2, (port0 | port1)")
 
-(define_insn_reservation "div" 8 (eq_attr "type" "div")
+(define_insn_reservation "div" 9 (eq_attr "type" "div")
                          "i1_pipeline, div*7, div + (port0 | port1)")
 
 (define_insn_reservation "float" 3 (eq_attr "type" "float")