diff options
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 11 | ||||
| -rw-r--r-- | gcc/common.opt | 8 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 16 | ||||
| -rw-r--r-- | gcc/gcc.c | 2 | ||||
| -rw-r--r-- | gcc/opts.c | 38 |
5 files changed, 74 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 86135fb..eada3de 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,14 @@ +2003-12-23 Jan Hubicka <jh@suse.cz> + + * common.opt (fprofile-generate,fprofile-use): Add. + * gcc.c (LINK_COMMAND_SPEC): Arrange -fprofile-generate to imply -lgcov + * opts.c (profile_arc_flag_set, flag_profile_values_set, + flag_unroll_loops_set, flag_tracer_set, + flag_value_profile_transformations_set, + flag_peel_loops_set): New static variables. + (common_handle_option): Deal with -fprofile-generate/-fprofile-use + * invoke.texi (-fprofile-generate, -fprofile-use): Describe. + 2003-12-23 Mark Mitchell <mark@codesourcery.com> * c-common.c (flag_abi_version): Default to 2. diff --git a/gcc/common.opt b/gcc/common.opt index a3dc84e..265241d 100644 --- a/gcc/common.opt +++ b/gcc/common.opt @@ -513,6 +513,14 @@ fprofile-arcs Common Insert arc-based program profiling code +fprofile-generate +Common +Enable common options for generating profile info for profile feedback directed optimizations + +fprofile-use +Common +Enable common options for performing profile feedback directed optimizations + fprofile-values Common Insert code to profile values of expressions diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index db5c0b0..88e8c67 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -281,6 +281,7 @@ in the following sections. -fno-trapping-math -fno-zero-initialized-in-bss @gol -fomit-frame-pointer -foptimize-register-move @gol -foptimize-sibling-calls -fprefetch-loop-arrays @gol +-fprofile-generate -fprofile-use @gol -freduce-all-givs -fregmove -frename-registers @gol -freorder-blocks -freorder-functions @gol -frerun-cse-after-loop -frerun-loop-opt @gol @@ -4377,6 +4378,21 @@ and occasionally eliminate the copy. Disabled at levels @option{-O}, @option{-O2}, @option{-O3}, @option{-Os}. +@item -fprofile-generate +@opindex fprofile-generate +Enable options usually used for instrumenting application to produce profile usefull +for later recompilation profile feedback based optimization. + +The following options are enabled: @code{-fprofile-arcs}, @code{-fprofile-values}, @code{-fvpt} + +@item -fprofile-use +@opindex fprofile-use +Enable profile feedback directed optimizations, and optimizations +generally profitable only with profile feedback available. + +The following options are enabled: @code{-fbranch-probabilities}, +@code{-fvpt}, @code{-funroll-loops}, @code{-fpeel-loops}, @code{-ftracer}. + @end table The following options control compiler behavior regarding floating @@ -677,7 +677,7 @@ proper position among the other output files. */ %{!fsyntax-only:%{!c:%{!M:%{!MM:%{!E:%{!S:\ %(linker) %l " LINK_PIE_SPEC "%X %{o*} %{A} %{d} %{e*} %{m} %{N} %{n} %{r}\ %{s} %{t} %{u*} %{x} %{z} %{Z} %{!A:%{!nostdlib:%{!nostartfiles:%S}}}\ - %{static:} %{L*} %(link_libgcc) %o %{fprofile-arcs:-lgcov}\ + %{static:} %{L*} %(link_libgcc) %o %{fprofile-arcs|fprofile-generate:-lgcov}\ %{!nostdlib:%{!nodefaultlibs:%(link_gcc_c_sequence)}}\ %{!A:%{!nostdlib:%{!nostartfiles:%E}}} %{T*} }}}}}}" #endif @@ -148,6 +148,13 @@ static unsigned int columns = 80; /* What to print when a switch has no documentation. */ static const char undocumented_msg[] = N_("This switch lacks documentation"); +/* Used for bookkeeping on whether user set these flags so + -fprofile-use/-fprofile-generate does not use them. */ +static bool profile_arc_flag_set, flag_profile_values_set; +static bool flag_unroll_loops_set, flag_tracer_set; +static bool flag_value_profile_transformations_set; +static bool flag_peel_loops_set, flag_branch_probabilities_set; + /* Input file names. */ const char **in_fnames; unsigned num_in_fnames; @@ -882,6 +889,7 @@ common_handle_option (size_t scode, const char *arg, break; case OPT_fbranch_probabilities: + flag_branch_probabilities_set = true; flag_branch_probabilities = value; break; @@ -1135,6 +1143,7 @@ common_handle_option (size_t scode, const char *arg, break; case OPT_fpeel_loops: + flag_peel_loops_set = true; flag_peel_loops = value; break; @@ -1167,14 +1176,41 @@ common_handle_option (size_t scode, const char *arg, break; case OPT_fprofile_arcs: + profile_arc_flag_set = true; profile_arc_flag = value; break; + case OPT_fprofile_use: + if (!flag_branch_probabilities_set) + flag_branch_probabilities = value; + if (!flag_profile_values_set) + flag_profile_values = value; + if (!flag_unroll_loops_set) + flag_unroll_loops = value; + if (!flag_peel_loops_set) + flag_peel_loops = value; + if (!flag_tracer_set) + flag_tracer = value; + if (!flag_value_profile_transformations_set) + flag_value_profile_transformations = value; + break; + + case OPT_fprofile_generate: + if (!profile_arc_flag_set) + profile_arc_flag = value; + if (!flag_profile_values_set) + flag_profile_values = value; + if (!flag_value_profile_transformations_set) + flag_value_profile_transformations = value; + break; + case OPT_fprofile_values: + flag_profile_values_set = true; flag_profile_values = value; break; case OPT_fvpt: + flag_value_profile_transformations_set = value; flag_value_profile_transformations = value; break; @@ -1358,6 +1394,7 @@ common_handle_option (size_t scode, const char *arg, break; case OPT_ftracer: + flag_tracer_set = true; flag_tracer = value; break; @@ -1378,6 +1415,7 @@ common_handle_option (size_t scode, const char *arg, break; case OPT_funroll_loops: + flag_unroll_loops_set = true; flag_unroll_loops = value; break; |