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Revert patches that should have been installed in the vta branch only. 

From-SVN: r128933
This commit is contained in:
Alexandre Oliva 2007-10-02 01:28:06 +00:00
parent 6cd9e97f91
commit d1aed86b66
2 changed files with 35 additions and 14 deletions
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10
gcc/ChangeLog.vta
View File

@ -1,10 +0,0 @@
2007-10-01 Alexandre Oliva <aoliva@redhat.com>
* tree-ssa-live.c (remove_unused_scope_block_p): Don't change
generated code depending on -g. Reverts part of 2007-07-26's
patch.
Local Variables:
mode: change-log
change-log-default-name: "ChangeLog.vta"
End:

39
gcc/tree-ssa-live.c
View File

@ -468,10 +468,39 @@ mark_scope_block_unused (tree scope)
static bool
remove_unused_scope_block_p (tree scope)
{
tree *t;
tree *t, *next;
bool unused = !TREE_USED (scope);
var_ann_t ann;
int nsubblocks = 0;
for (t = &BLOCK_VARS (scope); *t; t = next)
{
next = &TREE_CHAIN (*t);
/* Debug info of nested function refers to the block of the
function. */
if (TREE_CODE (*t) == FUNCTION_DECL)
unused = false;
/* When we are outputting debug info, we usually want to output
info about optimized-out variables in the scope blocks.
Exception are the scope blocks not containing any instructions
at all so user can't get into the scopes at first place. */
else if ((ann = var_ann (*t)) != NULL
&& ann->used)
unused = false;
/* When we are not doing full debug info, we however can keep around
only the used variables for cfgexpand's memory packing saving quite
a lot of memory. */
else if (debug_info_level != DINFO_LEVEL_NORMAL
&& debug_info_level != DINFO_LEVEL_VERBOSE)
{
*t = TREE_CHAIN (*t);
next = t;
}
}
for (t = &BLOCK_SUBBLOCKS (scope); *t ;)
if (remove_unused_scope_block_p (*t))
{
@ -504,10 +533,12 @@ remove_unused_scope_block_p (tree scope)
/* When there is only one subblock, see if it is just wrapper we can
ignore. Wrappers are not declaring any variables and not changing
abstract origin. */
else if (nsubblocks <= 1
else if (nsubblocks == 1
&& (BLOCK_VARS (scope)
|| (BLOCK_ABSTRACT_ORIGIN (scope)
!= BLOCK_ABSTRACT_ORIGIN (BLOCK_SUPERCONTEXT (scope)))))
|| ((debug_info_level == DINFO_LEVEL_NORMAL
|| debug_info_level == DINFO_LEVEL_VERBOSE)
&& ((BLOCK_ABSTRACT_ORIGIN (scope)
!= BLOCK_ABSTRACT_ORIGIN (BLOCK_SUPERCONTEXT (scope)))))))
unused = false;
return unused;
}