diff options
| author | Patrick Palka <ppalka@gcc.gnu.org> | 2016-01-28 01:06:29 +0000 |
|---|---|---|
| committer | Patrick Palka <ppalka@gcc.gnu.org> | 2016-01-28 01:06:29 +0000 |
| commit | 2b4f7b944d1f1a45948b10d4d9ba1169cc187016 (patch) | |
| tree | 2e9e77464bd247864b9c633aff892a1fcbfaa05e /gcc | |
| parent | 069ec73a9bae6d03426a11e9153d1ef01ce2258f (diff) | |
| download | gcc-2b4f7b944d1f1a45948b10d4d9ba1169cc187016.zip gcc-2b4f7b944d1f1a45948b10d4d9ba1169cc187016.tar.gz gcc-2b4f7b944d1f1a45948b10d4d9ba1169cc187016.tar.bz2 | |
Low-hanging C++-lexer speedup (PR c++/24208)
gcc/cp/ChangeLog:
PR c++/24208
* parser.c (LEXER_DEBUGGING_ENABLED_P): New macro.
(cp_lexer_debugging_p): Use it.
(cp_lexer_start_debugging): Likewise.
(cp_lexer_stop_debugging): Likewise.
From-SVN: r232912
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/cp/ChangeLog | 8 | ||||
| -rw-r--r-- | gcc/cp/parser.c | 18 |
2 files changed, 26 insertions, 0 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog index 52fb9d8..6b790e1 100644 --- a/gcc/cp/ChangeLog +++ b/gcc/cp/ChangeLog @@ -1,3 +1,11 @@ +2016-01-28 Patrick Palka <ppalka@gcc.gnu.org> + + PR c++/24208 + * parser.c (LEXER_DEBUGGING_ENABLED_P): New macro. + (cp_lexer_debugging_p): Use it. + (cp_lexer_start_debugging): Likewise. + (cp_lexer_stop_debugging): Likewise. + 2016-01-27 Marek Polacek <polacek@redhat.com> PR c/68062 diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c index 33f1df3..d03b0c9 100644 --- a/gcc/cp/parser.c +++ b/gcc/cp/parser.c @@ -706,11 +706,21 @@ cp_lexer_destroy (cp_lexer *lexer) ggc_free (lexer); } +/* This needs to be set to TRUE before the lexer-debugging infrastructure can + be used. The point of this flag is to help the compiler to fold away calls + to cp_lexer_debugging_p within this source file at compile time, when the + lexer is not being debugged. */ + +#define LEXER_DEBUGGING_ENABLED_P false + /* Returns nonzero if debugging information should be output. */ static inline bool cp_lexer_debugging_p (cp_lexer *lexer) { + if (!LEXER_DEBUGGING_ENABLED_P) + return false; + return lexer->debugging_p; } @@ -1296,6 +1306,10 @@ debug (cp_token *ptr) static void cp_lexer_start_debugging (cp_lexer* lexer) { + if (!LEXER_DEBUGGING_ENABLED_P) + fatal_error (input_location, + "LEXER_DEBUGGING_ENABLED_P is not set to true"); + lexer->debugging_p = true; cp_lexer_debug_stream = stderr; } @@ -1305,6 +1319,10 @@ cp_lexer_start_debugging (cp_lexer* lexer) static void cp_lexer_stop_debugging (cp_lexer* lexer) { + if (!LEXER_DEBUGGING_ENABLED_P) + fatal_error (input_location, + "LEXER_DEBUGGING_ENABLED_P is not set to true"); + lexer->debugging_p = false; cp_lexer_debug_stream = NULL; } |