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| author | Steve Ellcey <sje@cup.hp.com> | 2009-10-29 16:44:02 +0000 |
|---|---|---|
| committer | Steve Ellcey <sje@gcc.gnu.org> | 2009-10-29 16:44:02 +0000 |
| commit | 2b7e2984ce29a528a8a280191947742a19624b0b (patch) | |
| tree | 4c4f74fb7f7c6c8fe0a62100be5c7ce3bf5175c4 /gcc/doc | |
| parent | 44e824996b295fb81976a35028097fea1b89c809 (diff) | |
| download | gcc-2b7e2984ce29a528a8a280191947742a19624b0b.zip gcc-2b7e2984ce29a528a8a280191947742a19624b0b.tar.gz gcc-2b7e2984ce29a528a8a280191947742a19624b0b.tar.bz2 | |
re PR middle-end/37565 (__optimize__ attribute doesn't work correctly)
2009-10-29 Steve Ellcey <sje@cup.hp.com>
PR middle-end/37565
PR target/38018
* doc/tm.texi (OVERRIDE_OPTIONS): Update.
(TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE): New.
* optc-gen.awk (cl_target_option_restore): Include call to
targetm.override_options_after_change.
* target-def.h (TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE): New.
* target.h (override_options_after_change): New.
* c-common.c (parse_optimize_options): Call
targetm.override_options_after_change.
* config/ia64/ia64.c (TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE): New.
(ia64_override_options_after_change): New.
(ia64_override_options) Add call to above.
From-SVN: r153714
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/tm.texi | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/doc/tm.texi b/gcc/doc/tm.texi index 0f33d3d..984bbd7 100644 --- a/gcc/doc/tm.texi +++ b/gcc/doc/tm.texi @@ -814,8 +814,22 @@ parsed. Don't use this macro to turn on various extra optimizations for @option{-O}. That is what @code{OPTIMIZATION_OPTIONS} is for. + +If you need to do something whenever the optimization level is +changed via the optimize attribute or pragma, see +@code{TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE} @end defmac +@deftypefn {Target Hook} void TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE (void) +This target function is similar to the macro @code{OVERRIDE_OPTIONS} +but is called when the optimize level is changed via an attribute or +pragma or when it is reset at the end of the code affected by the +attribute or pragma. It is not called at the beginning of compilation +when @code{OVERRIDE_OPTIONS} is called so if you want to perform these +actions then, you should have @code{OVERRIDE_OPTIONS} call +@code{TARGET_OVERRIDE_OPTIONS_AFTER_CHANGE}. +@end deftypefn + @defmac C_COMMON_OVERRIDE_OPTIONS This is similar to @code{OVERRIDE_OPTIONS} but is only used in the C language frontends (C, Objective-C, C++, Objective-C++) and so can be |