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re PR debug/50869 (ice in vt_expand_var_loc_chain)

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PR debug/50869
* cselib.c (cfa_base_preserved_regno): Initialize.
(cselib_expand_value_rtx_1): Don't expand it.
* var-tracking.c (vt_expand_var_loc_chain): Initialize depth.
Check it's only zero if result is NULL.

From-SVN: r180725
This commit is contained in:
Alexandre Oliva 2011-11-01 02:09:00 +00:00 • committed by Alexandre Oliva
parent 03e0010d71
commit 5a9fbcf14a
3 changed files with 15 additions and 4 deletions
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8
gcc/ChangeLog
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@ -1,3 +1,11 @@
2011-11-01 Alexandre Oliva <aoliva@redhat.com>
PR debug/50869
* cselib.c (cfa_base_preserved_regno): Initialize.
(cselib_expand_value_rtx_1): Don't expand it.
* var-tracking.c (vt_expand_var_loc_chain): Initialize depth.
Check it's only zero if result is NULL.
2011-11-01 Jakub Jelinek <jakub@redhat.com>
* config/i386/sse.md (fixuns_trunc<mode><sseintvecmodelower>2): New

7
gcc/cselib.c
View file

@ -185,7 +185,7 @@ static cselib_val dummy_val;
that is constant through the whole function and should never be
eliminated. */
static cselib_val *cfa_base_preserved_val;
static unsigned int cfa_base_preserved_regno;
static unsigned int cfa_base_preserved_regno = INVALID_REGNUM;
/* Used to list all values that contain memory reference.
May or may not contain the useless values - the list is compacted
@ -1451,7 +1451,7 @@ cselib_expand_value_rtx_1 (rtx orig, struct expand_value_data *evd,
if (GET_MODE (l->elt->val_rtx) == GET_MODE (orig))
{
rtx result;
int regno = REGNO (orig);
unsigned regno = REGNO (orig);
/* The only thing that we are not willing to do (this
is requirement of dse and if others potential uses
@ -1471,7 +1471,8 @@ cselib_expand_value_rtx_1 (rtx orig, struct expand_value_data *evd,
make the frame assumptions. */
if (regno == STACK_POINTER_REGNUM
|| regno == FRAME_POINTER_REGNUM
|| regno == HARD_FRAME_POINTER_REGNUM)
|| regno == HARD_FRAME_POINTER_REGNUM
|| regno == cfa_base_preserved_regno)
return orig;
bitmap_set_bit (evd->regs_active, regno);

4
gcc/var-tracking.c
View file

@ -7764,7 +7764,7 @@ vt_expand_var_loc_chain (variable var, bitmap regs, void *data, bool *pendrecp)
bool pending_recursion;
rtx loc_from = NULL;
struct elt_loc_list *cloc = NULL;
int depth, saved_depth = elcd->depth;
int depth = 0, saved_depth = elcd->depth;
/* Clear all backlinks pointing at this, so that we're not notified
while we're active. */
@ -7842,6 +7842,8 @@ vt_expand_var_loc_chain (variable var, bitmap regs, void *data, bool *pendrecp)
VAR_LOC_FROM (var) = loc_from;
VAR_LOC_DEPTH (var) = depth;
gcc_checking_assert (!depth == !result);
elcd->depth = update_depth (saved_depth, depth);
/* Indicate whether any of the dependencies are pending recursion