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

From-SVN: r208975

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 36ec2a5eb9bb76690c790533794606aa4a4bc1dc..60da2b1f9c15d5bd663a9a121595b616ddaef8d4 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.
+
 2014-03-23  Eric Botcazou  <ebotcazou@adacore.com>
 
        PR rtl-optimization/60601

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index b52a084e12e54ffe4765d6af3ab12c2796a7b514..625fef25a6ca53bd8c09bcbdea07a3b308398008 100644 (file)
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -18309,8 +18309,9 @@ 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