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re PR debug/34037 (Bounds for VLAs not emitted into debuginfo) 

PR debug/34037
	* gimplify.c (gimplify_type_sizes): When not optimizing, ensure
	TYPE_MIN_VALUE and TYPE_MAX_VALUE is not is not DECL_IGNORED_P
	VAR_DECL.
	* cfgexpand.c (expand_used_vars): Keep DECL_ARTIFICIAL
	!DECL_IGNORED_P vars in local_decls list for instantiate_decls,
	ggc_free other TREE_LIST nodes from that chain.
	* function.c (instantiate_decls): Instantiate also DECL_RTL
	of vars in cfun->local_decls, free that list afterwards.

From-SVN: r140459
This commit is contained in:
Jakub Jelinek 2008-09-18 17:17:10 +02:00
parent a2cd689a68
commit 802e9f8e7c
4 changed files with 61 additions and 6 deletions
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14
gcc/ChangeLog
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@ -1,3 +1,15 @@
2008-09-18 Jakub Jelinek <jakub@redhat.com>
PR debug/34037
* gimplify.c (gimplify_type_sizes): When not optimizing, ensure
TYPE_MIN_VALUE and TYPE_MAX_VALUE is not is not DECL_IGNORED_P
VAR_DECL.
* cfgexpand.c (expand_used_vars): Keep DECL_ARTIFICIAL
!DECL_IGNORED_P vars in local_decls list for instantiate_decls,
ggc_free other TREE_LIST nodes from that chain.
* function.c (instantiate_decls): Instantiate also DECL_RTL
of vars in cfun->local_decls, free that list afterwards.
2008-09-18 Eric Botcazou <ebotcazou@adacore.com>
* config/sparc/sol2.h (WIDEST_HARDWARE_FP_SIZE): Move to...
@ -5,7 +17,7 @@
2008-09-18 Andrew MacLeod <amacleod@redhat.com>
* tree-outof-ssa.c (eliminate_useless_phis): fix formatting.
* tree-outof-ssa.c (eliminate_useless_phis): Fix formatting.
* tree-flow-.h (struct immediate_use_iterator_d): Fix comment.
2008-09-18 Andrew MacLeod <amacleod@redhat.com>

28
gcc/cfgexpand.c
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@ -1440,7 +1440,7 @@ estimated_stack_frame_size (void)
static void
expand_used_vars (void)
{
tree t, outer_block = DECL_INITIAL (current_function_decl);
tree t, next, outer_block = DECL_INITIAL (current_function_decl);
/* Compute the phase of the stack frame for this function. */
{
@ -1453,11 +1453,15 @@ expand_used_vars (void)
/* At this point all variables on the local_decls with TREE_USED
set are not associated with any block scope. Lay them out. */
for (t = cfun->local_decls; t; t = TREE_CHAIN (t))
t = cfun->local_decls;
cfun->local_decls = NULL_TREE;
for (; t; t = next)
{
tree var = TREE_VALUE (t);
bool expand_now = false;
next = TREE_CHAIN (t);
/* We didn't set a block for static or extern because it's hard
to tell the difference between a global variable (re)declared
in a local scope, and one that's really declared there to
@ -1484,9 +1488,25 @@ expand_used_vars (void)
TREE_USED (var) = 1;
if (expand_now)
expand_one_var (var, true, true);
{
expand_one_var (var, true, true);
if (DECL_ARTIFICIAL (var) && !DECL_IGNORED_P (var))
{
rtx rtl = DECL_RTL_IF_SET (var);
/* Keep artificial non-ignored vars in cfun->local_decls
chain until instantiate_decls. */
if (rtl && (MEM_P (rtl) || GET_CODE (rtl) == CONCAT))
{
TREE_CHAIN (t) = cfun->local_decls;
cfun->local_decls = t;
continue;
}
}
}
ggc_free (t);
}
cfun->local_decls = NULL_TREE;
/* At this point, all variables within the block tree with TREE_USED
set are actually used by the optimized function. Lay them out. */

13
gcc/function.c
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@ -1634,7 +1634,7 @@ instantiate_decls_1 (tree let)
static void
instantiate_decls (tree fndecl)
{
tree decl;
tree decl, t, next;
/* Process all parameters of the function. */
for (decl = DECL_ARGUMENTS (fndecl); decl; decl = TREE_CHAIN (decl))
@ -1650,6 +1650,17 @@ instantiate_decls (tree fndecl)
/* Now process all variables defined in the function or its subblocks. */
instantiate_decls_1 (DECL_INITIAL (fndecl));
t = cfun->local_decls;
cfun->local_decls = NULL_TREE;
for (; t; t = next)
{
next = TREE_CHAIN (t);
decl = TREE_VALUE (t);
if (DECL_RTL_SET_P (decl))
instantiate_decl_rtl (DECL_RTL (decl));
ggc_free (t);
}
}
/* Pass through the INSNS of function FNDECL and convert virtual register

12
gcc/gimplify.c
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@ -7117,6 +7117,18 @@ gimplify_type_sizes (tree type, gimple_seq *list_p)
/* These types may not have declarations, so handle them here. */
gimplify_type_sizes (TREE_TYPE (type), list_p);
gimplify_type_sizes (TYPE_DOMAIN (type), list_p);
/* When not optimizing, ensure VLA bounds aren't removed. */
if (!optimize
&& TYPE_DOMAIN (type)
&& INTEGRAL_TYPE_P (TYPE_DOMAIN (type)))
{
t = TYPE_MIN_VALUE (TYPE_DOMAIN (type));
if (t && TREE_CODE (t) == VAR_DECL && DECL_ARTIFICIAL (t))
DECL_IGNORED_P (t) = 0;
t = TYPE_MAX_VALUE (TYPE_DOMAIN (type));
if (t && TREE_CODE (t) == VAR_DECL && DECL_ARTIFICIAL (t))
DECL_IGNORED_P (t) = 0;
}
break;
case RECORD_TYPE: