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Diffstat (limited to 'gcc/doc/extend.texi')
| -rw-r--r-- | gcc/doc/extend.texi | 24 |
1 files changed, 20 insertions, 4 deletions
diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi index c5d4fd83300..69bd151f84b 100644 --- a/gcc/doc/extend.texi +++ b/gcc/doc/extend.texi @@ -1887,10 +1887,10 @@ this attribute to work correctly. @item interrupt @cindex interrupt handler functions -Use this attribute on the ARM, AVR, C4x, M32R/D and Xstormy16 ports to indicate -that the specified function is an interrupt handler. The compiler will -generate function entry and exit sequences suitable for use in an -interrupt handler when this attribute is present. +Use this attribute on the ARM, AVR, C4x, M32C, M32R/D and Xstormy16 +ports to indicate that the specified function is an interrupt handler. +The compiler will generate function entry and exit sequences suitable +for use in an interrupt handler when this attribute is present. Note, interrupt handlers for the Blackfin, m68k, H8/300, H8/300H, H8S, and SH processors can be specified via the @code{interrupt_handler} attribute. @@ -8953,6 +8953,7 @@ for further explanation. @menu * ARM Pragmas:: +* M32C Pragmas:: * RS/6000 and PowerPC Pragmas:: * Darwin Pragmas:: * Solaris Pragmas:: @@ -8984,6 +8985,21 @@ Do not affect the @code{long_call} or @code{short_call} attributes of subsequent functions. @end table +@node M32C Pragmas +@subsection M32C Pragmas + +@table @code +@item memregs @var{number} +@cindex pragma, memregs +Overrides the command line option @code{-memregs=} for the current +file. Use with care! This pragma must be before any function in the +file, and mixing different memregs values in different objects may +make them incompatible. This pragma is useful when a +performance-critical function uses a memreg for temporary values, +as it may allow you to reduce the number of memregs used. + +@end table + @node RS/6000 and PowerPC Pragmas @subsection RS/6000 and PowerPC Pragmas |