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builtins.c (expand_builtin_strlen): Make sure that we have something at the beginning of the sequence.

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* builtins.c (expand_builtin_strlen): Make sure that we have something
        at the beginning of the sequence.

        * toplev.c (rest_of_compilation): Also set TREE_NOTHROW for
        deferred inlines.

        * invoke.texi (C++ Dialect Options): Document -fno-enforce-eh-specs.

From-SVN: r32473
This commit is contained in:
Jason Merrill 2000-03-10 19:50:09 +00:00 committed by Jason Merrill
parent 8ad52449ba
commit dd1ba632e7
4 changed files with 24 additions and 0 deletions
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10
gcc/ChangeLog
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@ -1,3 +1,13 @@
2000-03-10 Jason Merrill <jason@casey.cygnus.com>
* builtins.c (expand_builtin_strlen): Make sure that we have something
at the beginning of the sequence.
* toplev.c (rest_of_compilation): Also set TREE_NOTHROW for
deferred inlines.
* invoke.texi (C++ Dialect Options): Document -fno-enforce-eh-specs.
2000-03-10 Richard Henderson <rth@cygnus.com> 2000-03-10 Richard Henderson <rth@cygnus.com>
* except.c (can_throw): Use INTVAL on a CONST_INT. * except.c (can_throw): Use INTVAL on a CONST_INT.

2
gcc/builtins.c
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@ -1381,6 +1381,8 @@ expand_builtin_strlen (exp, target, mode)
/* Mark the beginning of the strlen sequence so we can emit the /* Mark the beginning of the strlen sequence so we can emit the
source operand later. */ source operand later. */
before_strlen = get_last_insn(); before_strlen = get_last_insn();
if (before_strlen == NULL_RTX)
before_strlen = emit_note (0, NOTE_INSN_DELETED);
/* Check the string is readable and has an end. */ /* Check the string is readable and has an end. */
if (current_function_check_memory_usage) if (current_function_check_memory_usage)

6
gcc/invoke.texi
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@ -1064,6 +1064,12 @@ which is only used to initialize another object of the same type.
Specifying this option disables that optimization, and forces g++ to Specifying this option disables that optimization, and forces g++ to
call the copy constructor in all cases. call the copy constructor in all cases.
@item -fno-enforce-eh-specs
Don't check for violation of exception specifications at runtime. This
option violates the C++ standard, but may be useful for reducing code
size in production builds, much like defining @samp{NDEBUG}. The compiler
will still optimize based on the exception specifications.
@item -fexternal-templates @item -fexternal-templates
Cause template instantiations to obey @samp{#pragma interface} and Cause template instantiations to obey @samp{#pragma interface} and
@samp{implementation}; template instances are emitted or not according @samp{implementation}; template instances are emitted or not according

6
gcc/toplev.c
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@ -2967,6 +2967,12 @@ rest_of_compilation (decl)
optimize = saved_optimize; optimize = saved_optimize;
} }
current_function_nothrow = nothrow_function_p ();
if (current_function_nothrow)
/* Now we know that this can't throw; set the flag for the benefit
of other functions later in this translation unit. */
TREE_NOTHROW (current_function_decl) = 1;
note_deferral_of_defined_inline_function (decl); note_deferral_of_defined_inline_function (decl);
TIMEVAR (integration_time, save_for_inline_nocopy (decl)); TIMEVAR (integration_time, save_for_inline_nocopy (decl));
DECL_SAVED_INSNS (decl)->inlinable = inlinable; DECL_SAVED_INSNS (decl)->inlinable = inlinable;