* doc/invoke.texi (mapp-regs): Clarify.

From-SVN: r208973

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 46e1072671f6289391e26ec8788c4c70206acaf1..ec68b1429137a71c18ee3833027027d0def5e80c 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2014-04-01  Sebastian Huber  <sebastian.huber@embedded-brains.de>
+
+       * doc/invoke.texi (mapp-regs): Clarify.
+
 2014-03-31  Ulrich Drepper  <drepper@gmail.com>
 
        * config/i386/avx512fintrin.h (__v32hi): Define type.

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 78ddde07f9bcaf16cb7b608d414fe0d323bc09ea..eca4e8f1afa08fc9ef8b77f08ec0709d56aceb55 100644 (file)
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -20848,8 +20848,9 @@ These @samp{-m} options are supported on the SPARC:
 @opindex mno-app-regs
 @opindex mapp-regs
 Specify @option{-mapp-regs} to generate output using the global registers
-2 through 4, which the SPARC SVR4 ABI reserves for applications.  This
-is the default.
+2 through 4, which the SPARC SVR4 ABI reserves for applications.  Like the
+global register 1, each global register 2 through 4 is then treated as an
+allocable register that is clobbered by function calls.  This is the default.
 
 To be fully SVR4 ABI-compliant at the cost of some performance loss,
 specify @option{-mno-app-regs}.  You should compile libraries and system