[gcc/devel/ranger] sra/doc: Document param sra-max-propagations

[Aldy Hernandez]

https://gcc.gnu.org/g:d4ed2cd13d0277b5e2c1dc1d1da998a631053cd8

commit d4ed2cd13d0277b5e2c1dc1d1da998a631053cd8
Author: Martin Jambor <mjambor@suse.cz>
Date:   Thu Apr 2 15:11:22 2020 +0200

    sra/doc: Document param sra-max-propagations
    
    I forgot to document the new param in invoke.texi, does the text below
    look OK?
    
    Tested with make info and make pdf.
    
    Thanks,
    
    Martin
    
    2020-04-02  Martin Jambor  <mjambor@suse.cz>
    
            * doc/invoke.texi (Optimize Options): Document sra-max-propagations.

Diff:
---
 gcc/ChangeLog       | 4 ++++
 gcc/doc/invoke.texi | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3ffac6702ad..3e3f1ea13c7 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2020-04-02  Martin Jambor  <mjambor@suse.cz>
+
+	* doc/invoke.texi (Optimize Options): Document sra-max-propagations.
+
 2020-04-02  Jakub Jelinek  <jakub@redhat.com>
 
 	PR rtl-optimization/92264
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 412750c1fc9..e9e1683e9a8 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -12785,6 +12785,11 @@ speed
 (@option{sra-max-scalarization-size-Ospeed}) or size
 (@option{sra-max-scalarization-size-Osize}) respectively.
 
+@item sra-max-propagations
+The maximum number of artificial accesses that Scalar Replacement of
+Aggregates (SRA) will track, per one local variable, in order to
+facilitate copy propagation.
+
 @item tm-max-aggregate-size
 When making copies of thread-local variables in a transaction, this
 parameter specifies the size in bytes after which variables are