diff options
Diffstat (limited to 'gcc/fortran/invoke.texi')
| -rw-r--r-- | gcc/fortran/invoke.texi | 32 |
1 files changed, 27 insertions, 5 deletions
diff --git a/gcc/fortran/invoke.texi b/gcc/fortran/invoke.texi index 261f2535bb5..f3a8b34a26b 100644 --- a/gcc/fortran/invoke.texi +++ b/gcc/fortran/invoke.texi @@ -149,8 +149,9 @@ and warnings}. -Wdo-subscript -Wfunction-elimination -Wimplicit-interface @gol -Wimplicit-procedure -Wintrinsic-shadow -Wuse-without-only -Wintrinsics-std @gol -Wline-truncation -Wno-align-commons -Wno-tabs -Wreal-q-constant @gol --Wsurprising -Wunderflow -Wunused-parameter -Wrealloc-lhs -Wrealloc-lhs-all @gol --Wtarget-lifetime -fmax-errors=@var{n} -fsyntax-only -pedantic -pedantic-errors +-Wsurprising -Wunderflow -Wunused-parameter -Wrealloc-lhs @gol +-Wrealloc-lhs-all -Wfrontend-loop-interchange -Wtarget-lifetime @gol +-fmax-errors=@var{n} -fsyntax-only -pedantic -pedantic-errors @gol } @item Debugging Options @@ -183,6 +184,7 @@ and warnings}. -fbounds-check -fcheck-array-temporaries @gol -fcheck=@var{<all|array-temps|bounds|do|mem|pointer|recursion>} @gol -fcoarray=@var{<none|single|lib>} -fexternal-blas -ff2c +-ffrontend-loop-interchange @gol -ffrontend-optimize @gol -finit-character=@var{n} -finit-integer=@var{n} -finit-local-zero @gol -finit-derived @gol @@ -910,6 +912,13 @@ Enables some warning options for usages of language features which may be problematic. This currently includes @option{-Wcompare-reals}, @option{-Wunused-parameter} and @option{-Wdo-subscript}. +@item -Wfrontend-loop-interchange +@opindex @code{Wfrontend-loop-interchange} +@cindex warnings, loop interchange +@cindex loop interchange, warning +Enable warning for loop interchanges performed by the +@option{-ffrontend-loop-interchange} option. + @item -Wimplicit-interface @opindex @code{Wimplicit-interface} @cindex warnings, implicit interface @@ -1705,9 +1714,14 @@ initialization options are provided by the the real and imaginary parts of local @code{COMPLEX} variables), @option{-finit-logical=@var{<true|false>}}, and @option{-finit-character=@var{n}} (where @var{n} is an ASCII character -value) options. Components of derived type variables will be initialized -according to these flags only with @option{-finit-derived}. These options do -not initialize +value) options. + +With @option{-finit-derived}, components of derived type variables will be +initialized according to these flags. Components whose type is not covered by +an explicit @option{-finit-*} flag will be treated as described above with +@option{-finit-local-zero}. + +These options do not initialize @itemize @bullet @item objects with the POINTER attribute @@ -1782,6 +1796,14 @@ expressions, removing unnecessary calls to @code{TRIM} in comparisons and assignments and replacing @code{TRIM(a)} with @code{a(1:LEN_TRIM(a))}. It can be deselected by specifying @option{-fno-frontend-optimize}. + +@item -ffrontend-loop-interchange +@opindex @code{frontend-loop-interchange} +@cindex loop interchange, Fortran +Attempt to interchange loops in the Fortran front end where +profitable. Enabled by default by any @option{-O} option. +At the moment, this option only affects @code{FORALL} and +@code{DO CONCURRENT} statements with several forall triplets. @end table @xref{Code Gen Options,,Options for Code Generation Conventions, |