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Add line map statistics to -fmem-report output

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This patch adds statistics about line maps' memory consumption and
macro expansion to the output of -fmem-report.  It has been useful in
trying to reduce the memory consumption of the macro maps support.

Co-Authored-By: Dodji Seketeli <dodji@redhat.com>

From-SVN: r180085
This commit is contained in:
Tom Tromey 2011-10-17 09:59:52 +00:00 • committed by Dodji Seketeli
parent 847e697a24
commit 64a1a422db
8 changed files with 231 additions and 4 deletions
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29
libcpp/macro.c
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@ -165,6 +165,13 @@ static void consume_next_token_from_context (cpp_reader *pfile,
source_location *);
static const cpp_token* cpp_get_token_1 (cpp_reader *, source_location *);
/* Statistical counter tracking the number of macros that got
expanded. */
unsigned num_expanded_macros_counter = 0;
/* Statistical counter tracking the total number tokens resulting
from macro expansion. */
unsigned num_macro_tokens_counter = 0;
/* Emits a warning if NODE is a macro defined in the main file that
has not been used. */
int
@ -1082,10 +1089,15 @@ enter_macro_context (cpp_reader *pfile, cpp_hashnode *node,
(const cpp_token **)
macro_tokens->base,
count);
num_macro_tokens_counter += count;
}
else
_cpp_push_token_context (pfile, node, macro->exp.tokens,
macro_real_token_count (macro));
{
unsigned tokens_count = macro_real_token_count (macro);
_cpp_push_token_context (pfile, node, macro->exp.tokens,
tokens_count);
num_macro_tokens_counter += tokens_count;
}
}
if (pragma_buff)
@ -1095,13 +1107,18 @@ enter_macro_context (cpp_reader *pfile, cpp_hashnode *node,
padding_token (pfile, result), 1);
do
{
unsigned tokens_count;
_cpp_buff *tail = pragma_buff->next;
pragma_buff->next = NULL;
tokens_count = ((const cpp_token **) BUFF_FRONT (pragma_buff)
- (const cpp_token **) pragma_buff->base);
push_ptoken_context (pfile, NULL, pragma_buff,
(const cpp_token **) pragma_buff->base,
((const cpp_token **) BUFF_FRONT (pragma_buff)
- (const cpp_token **) pragma_buff->base));
tokens_count);
pragma_buff = tail;
if (!CPP_OPTION (pfile, track_macro_expansion))
num_macro_tokens_counter += tokens_count;
}
while (pragma_buff != NULL);
return 2;
@ -1711,6 +1728,8 @@ replace_args (cpp_reader *pfile, cpp_hashnode *node, cpp_macro *macro,
else
push_ptoken_context (pfile, node, buff, first,
tokens_buff_count (buff));
num_macro_tokens_counter += tokens_buff_count (buff);
}
/* Return a special padding token, with padding inherited from SOURCE. */
@ -2240,6 +2259,8 @@ cpp_get_token_1 (cpp_reader *pfile, source_location *location)
}
else
{
if (pfile->context->c.macro)
++num_expanded_macros_counter;
_cpp_pop_context (pfile);
if (pfile->state.in_directive)
continue;