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| author | Roger Sayle <roger@eyesopen.com> | 2002-07-27 21:15:39 +0000 |
|---|---|---|
| committer | Roger Sayle <sayle@gcc.gnu.org> | 2002-07-27 21:15:39 +0000 |
| commit | a3926fe19283b9b235f35c71836cab1e011d922d (patch) | |
| tree | cff4f30c1ddcc1ff61a345347e15b239e9c116a6 | |
| parent | ef69da62f4cc64ed95000e85ff91821d971b6af0 (diff) | |
| download | gcc-a3926fe19283b9b235f35c71836cab1e011d922d.zip gcc-a3926fe19283b9b235f35c71836cab1e011d922d.tar.gz gcc-a3926fe19283b9b235f35c71836cab1e011d922d.tar.bz2 | |
decl2.c (cxx_decode_option): Support -fno-builtin-foo.
* cp/decl2.c (cxx_decode_option): Support -fno-builtin-foo.
* doc/invoke.texi: Document that both -fno-builtin-foo and
-fno-builtin are supported by the g++ front-end.
From-SVN: r55802
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/cp/ChangeLog | 4 | ||||
| -rw-r--r-- | gcc/cp/decl2.c | 2 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 13 |
4 files changed, 14 insertions, 10 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 73dbfb5..409259a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2002-07-27 Roger Sayle <roger@eyesopen.com> + + * doc/invoke.texi: Document that both -fno-builtin-foo and + -fno-builtin are supported by the g++ front-end. + 2002-07-27 Stan Shebs <shebs@apple.com> * configure.in: Rename config_gtfiles to target_gtfiles. diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog index 8fc09b1..8e5a933 100644 --- a/gcc/cp/ChangeLog +++ b/gcc/cp/ChangeLog @@ -1,3 +1,7 @@ +2002-07-27 Roger Sayle <roger@eyesopen.com> + + * decl2.c (cxx_decode_option): Support -fno-builtin-foo. + 2002-07-26 Jason Merrill <jason@redhat.com> * call.c (build_over_call): Likewise. diff --git a/gcc/cp/decl2.c b/gcc/cp/decl2.c index 0a2da36..94694dd 100644 --- a/gcc/cp/decl2.c +++ b/gcc/cp/decl2.c @@ -534,6 +534,8 @@ cxx_decode_option (argc, argv) warning ("-fname-mangling-version is no longer supported"); return 1; } + else if ((option_value = skip_leading_substring (p, "no-builtin-"))) + disable_builtin_function (option_value); else if (dump_switch_p (p)) ; else diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 427f5c4..5240304 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -1081,7 +1081,7 @@ switch only affects the @code{asm} and @code{typeof} keywords, since @code{inline} is a standard keyword in ISO C99. @item -fno-builtin -@itemx -fno-builtin-@var{function} @r{(C and Objective-C only)} +@itemx -fno-builtin-@var{function} @opindex fno-builtin @cindex built-in functions Don't recognize built-in functions that do not begin with @@ -1099,15 +1099,8 @@ and faster, but since the function calls no longer appear as such, you cannot set a breakpoint on those calls, nor can you change the behavior of the functions by linking with a different library. -In C++, @option{-fno-builtin} is always in effect. The @option{-fbuiltin} -option has no effect. Therefore, in C++, the only way to get the -optimization benefits of built-in functions is to call the function -using the @samp{__builtin_} prefix. The GNU C++ Standard Library uses -built-in functions to implement many functions (like -@code{std::strchr}), so that you automatically get efficient code. - -With the @option{-fno-builtin-@var{function}} option, not available -when compiling C++, only the built-in function @var{function} is +With the @option{-fno-builtin-@var{function}} option +only the built-in function @var{function} is disabled. @var{function} must not begin with @samp{__builtin_}. If a function is named this is not built-in in this version of GCC, this option is ignored. There is no corresponding |