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| author | Alexandre Oliva <aoliva@redhat.com> | 2011-11-01 02:09:00 +0000 |
|---|---|---|
| committer | Alexandre Oliva <aoliva@gcc.gnu.org> | 2011-11-01 02:09:00 +0000 |
| commit | 5a9fbcf14adbf0aef998c7b205298a96a7bd8841 (patch) | |
| tree | 312250e8d8088ea8f413facab65cc217f6170c86 /gcc/cselib.c | |
| parent | 03e0010d71efedb4a5a9718a68fc4ffdd9e24f5b (diff) | |
| download | gcc-5a9fbcf14adbf0aef998c7b205298a96a7bd8841.zip gcc-5a9fbcf14adbf0aef998c7b205298a96a7bd8841.tar.gz gcc-5a9fbcf14adbf0aef998c7b205298a96a7bd8841.tar.bz2 | |
re PR debug/50869 (ice in vt_expand_var_loc_chain)
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
Diffstat (limited to 'gcc/cselib.c')
| -rw-r--r-- | gcc/cselib.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/cselib.c b/gcc/cselib.c index b96c0cd..ef397db 100644 --- a/gcc/cselib.c +++ b/gcc/cselib.c @@ -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); |