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re PR rtl-optimization/12953 (tree inline bug and fix)

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2003-11-12  Alexey Starovoytov  <alexey.starovoytov@sun.com>
	    Roger Sayle  <roger@eyesopen.com>

	PR optimization/12953
	* tree-inline.c (inline_forbidden_p_1): Added check for BUILT_IN
	before switch by FUNCTION_CODE.

Co-Authored-By: Roger Sayle <roger@eyesopen.com>

From-SVN: r73502
This commit is contained in:
Alexey Starovoytov 2003-11-12 18:12:57 +00:00 committed by Roger Sayle
parent 94f773991e
commit 3197c4fd19
2 changed files with 46 additions and 36 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2003-11-12 Alexey Starovoytov <alexey.starovoytov@sun.com>
Roger Sayle <roger@eyesopen.com>
PR optimization/12953
* tree-inline.c (inline_forbidden_p_1): Added check for BUILT_IN
before switch by FUNCTION_CODE.
2003-11-12 Richard Earnshaw <rearnsha@arm.com>
* arm.md (storehi): Avoid use of explicit subreg.

75
gcc/tree-inline.c
View File

@ -1000,10 +1000,11 @@ inline_forbidden_p_1 (tree *nodep, int *walk_subtrees ATTRIBUTE_UNUSED,
switch (TREE_CODE (node))
{
case CALL_EXPR:
/* Refuse to inline alloca call unless user explicitly forced so as this
may change program's memory overhead drastically when the function
using alloca is called in loop. In GCC present in SPEC2000 inlining
into schedule_block cause it to require 2GB of ram instead of 256MB. */
/* Refuse to inline alloca call unless user explicitly forced so as
this may change program's memory overhead drastically when the
function using alloca is called in loop. In GCC present in
SPEC2000 inlining into schedule_block cause it to require 2GB of
RAM instead of 256MB. */
if (alloca_call_p (node)
&& !lookup_attribute ("always_inline", DECL_ATTRIBUTES (fn)))
{
@ -1025,40 +1026,42 @@ inline_forbidden_p_1 (tree *nodep, int *walk_subtrees ATTRIBUTE_UNUSED,
return node;
}
switch (DECL_FUNCTION_CODE (t))
{
/* We cannot inline functions that take a variable number of
arguments. */
case BUILT_IN_VA_START:
case BUILT_IN_STDARG_START:
case BUILT_IN_NEXT_ARG:
case BUILT_IN_VA_END:
if (DECL_BUILT_IN (t))
switch (DECL_FUNCTION_CODE (t))
{
inline_forbidden_reason
= N_("%Jfunction '%F' can never be inlined because it "
"uses variable argument lists");
return node;
}
case BUILT_IN_LONGJMP:
{
/* We can't inline functions that call __builtin_longjmp at all.
The non-local goto machinery really requires the destination
be in a different function. If we allow the function calling
__builtin_longjmp to be inlined into the function calling
__builtin_setjmp, Things will Go Awry. */
/* ??? Need front end help to identify "regular" non-local goto. */
if (DECL_BUILT_IN_CLASS (t) == BUILT_IN_NORMAL)
{
inline_forbidden_reason
= N_("%Jfunction '%F' can never be inlined "
"because it uses setjmp-longjmp exception handling");
return node;
}
}
/* We cannot inline functions that take a variable number of
arguments. */
case BUILT_IN_VA_START:
case BUILT_IN_STDARG_START:
case BUILT_IN_NEXT_ARG:
case BUILT_IN_VA_END:
{
inline_forbidden_reason
= N_("%Jfunction '%F' can never be inlined because it "
"uses variable argument lists");
return node;
}
case BUILT_IN_LONGJMP:
{
/* We can't inline functions that call __builtin_longjmp at
all. The non-local goto machinery really requires the
destination be in a different function. If we allow the
function calling __builtin_longjmp to be inlined into the
function calling __builtin_setjmp, Things will Go Awry. */
/* ??? Need front end help to identify "regular" non-local
goto. */
if (DECL_BUILT_IN_CLASS (t) == BUILT_IN_NORMAL)
{
inline_forbidden_reason
= N_("%Jfunction '%F' can never be inlined because "
"it uses setjmp-longjmp exception handling");
return node;
}
}
default:
break;
}
default:
break;
}
break;
#ifndef INLINER_FOR_JAVA