diff options
| author | Tobias Burnus <burnus@net-b.de> | 2010-02-21 14:06:07 +0100 |
|---|---|---|
| committer | Tobias Burnus <burnus@gcc.gnu.org> | 2010-02-21 14:06:07 +0100 |
| commit | 72bd130e66f28490198385ff62481a719a0103c0 (patch) | |
| tree | d4fbccbf175b1cb47bc63157005e3fbde3964021 /gcc/fortran/invoke.texi | |
| parent | c76dc9b0e660bb78b5addda708a1b1eeb53ec1b8 (diff) | |
| download | gcc-72bd130e66f28490198385ff62481a719a0103c0.zip gcc-72bd130e66f28490198385ff62481a719a0103c0.tar.gz gcc-72bd130e66f28490198385ff62481a719a0103c0.tar.bz2 | |
re PR fortran/35259 (-fassociative-math not enabled by default; No option to associate with PAREN_EXPRs)
2010-02-21 Tobias Burnus <burnus@net-b.de>
PR fortran/35259
* doc/invoke.texi (-fassociative-math): Document that this
option is automatically enabled for Fortran.
2010-02-21 Tobias Burnus <burnus@net-b.de>
PR fortran/35259
* gfortran.h (gfc_option_t): New flag -fprotect-parens.
* lang.opt: Ditto.
* option.c (gfc_init_options,gfc_handle_option): Ditto.
* trans-expr.c (gfc_conv_expr_op): Use the flag.
* invoke.texi: Document new -fno-protect-parens flag.
2010-02-21 Tobias Burnus <burnus@net-b.de>
PR fortran/35259
* gfortran.dg/reassoc_5.f90: New test.
From-SVN: r156937
Diffstat (limited to 'gcc/fortran/invoke.texi')
| -rw-r--r-- | gcc/fortran/invoke.texi | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/gcc/fortran/invoke.texi b/gcc/fortran/invoke.texi index 9fe75d1..efcf5ef 100644 --- a/gcc/fortran/invoke.texi +++ b/gcc/fortran/invoke.texi @@ -171,7 +171,8 @@ and warnings}. -fpack-derived -frepack-arrays -fshort-enums -fexternal-blas @gol -fblas-matmul-limit=@var{n} -frecursive -finit-local-zero @gol -finit-integer=@var{n} -finit-real=@var{<zero|inf|-inf|nan|snan>} @gol --finit-logical=@var{<true|false>} -finit-character=@var{n} -fno-align-commons} +-finit-logical=@var{<true|false>} -finit-character=@var{n} @gol +-fno-align-commons -fno-protect-parens} @end table @menu @@ -1410,6 +1411,16 @@ consistent data types everywhere, this padding can cause trouble, and same form of this option should be used for all files that share a COMMON block. To avoid potential alignment issues in COMMON blocks, it is recommended to order objects from largests to smallest. + +@item -fno-protect-parens +@opindex @code{fno-protect-parens} +@cindex re-association of parenthesed expressions +By default the parentheses in expression are honored for all optimization +levels such that the compiler does not do any re-association. Using +@option{-fno-protect-parens} allows the compiler to reorder REAL and +COMPLEX expressions to produce faster code. Note that for the re-association +optimization @option{-fno-signed-zeros} and @option{-fno-trapping-math} +need to be in effect. @end table @xref{Code Gen Options,,Options for Code Generation Conventions, |