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| author | Sebastian Huber <sebastian.huber@embedded-brains.de> | 2014-04-01 08:20:42 +0000 |
|---|---|---|
| committer | Eric Botcazou <ebotcazou@gcc.gnu.org> | 2014-04-01 08:20:42 +0000 |
| commit | cded08eab490127092ab6807c8a8f778d69e5d18 (patch) | |
| tree | 0c7159adca77fbe684688d0b8277ebcc0dc0d284 /gcc/doc | |
| parent | 25336bb650009bc065a2f49f8ae6bcf0e32f5160 (diff) | |
| download | gcc-cded08eab490127092ab6807c8a8f778d69e5d18.zip gcc-cded08eab490127092ab6807c8a8f778d69e5d18.tar.gz gcc-cded08eab490127092ab6807c8a8f778d69e5d18.tar.bz2 | |
* doc/invoke.texi (mapp-regs): Clarify.
From-SVN: r208973
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 78ddde0..eca4e8f 100644 --- 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 |