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

From-SVN: r208974

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index a309514271534cb639da95ff3206272d87cee941..ea2edb23348b48731aab37a6efd3e9b545fa8a42 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  H.J. Lu  <hongjiu.lu@intel.com>
 
        PR rtl-optimization/60700

diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 2505d2dda83845300e80194e1bfbc2e7eb1d45cb..c257933be45cf8a048aaa8612603a932370ac494 100644 (file)
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -19067,8 +19067,9 @@ 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