* Patch to fix PR93561
@ 2020-02-06 22:16 Vladimir Makarov
2020-02-07 21:46 ` Segher Boessenkool
0 siblings, 1 reply; 2+ messages in thread
From: Vladimir Makarov @ 2020-02-06 22:16 UTC (permalink / raw)
To: gcc-patches
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The following patch fixes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93561
The patch was successfully bootstrapped on x86-64.
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commit d26f37a16e3ed3d75a93ffb1da10c44c36a8a36d (HEAD -> master)
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1754aa76399..aec58a06529 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2020-02-06 <zhongyunde@huawei.com>
+ Vladimir Makarov <vmakarov@redhat.com>
+
+ PR rtl-optimization/93561
+ * lra-assigns.c (spill_for): Check that tested hard regno is not out of
+ hard register range.
+
2020-02-06 Richard Sandiford <richard.sandiford@arm.com>
* config/aarch64/aarch64.md (aarch64_movk<mode>): Add a type
diff --git a/gcc/lra-assigns.c b/gcc/lra-assigns.c
index 031ce402c32..40e323c2a64 100644
--- a/gcc/lra-assigns.c
+++ b/gcc/lra-assigns.c
@@ -964,6 +964,8 @@ spill_for (int regno, bitmap spilled_pseudo_bitmap, bool first_p)
bitmap_clear (&spill_pseudos_bitmap);
for (j = hard_regno_nregs (hard_regno, mode) - 1; j >= 0; j--)
{
+ if (hard_regno + j >= FIRST_PSEUDO_REGISTER)
+ break;
if (try_hard_reg_pseudos_check[hard_regno + j] != curr_pseudo_check)
continue;
lra_assert (!bitmap_empty_p (&try_hard_reg_pseudos[hard_regno + j]));
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Patch to fix PR93561
2020-02-06 22:16 Patch to fix PR93561 Vladimir Makarov
@ 2020-02-07 21:46 ` Segher Boessenkool
0 siblings, 0 replies; 2+ messages in thread
From: Segher Boessenkool @ 2020-02-07 21:46 UTC (permalink / raw)
To: Vladimir Makarov; +Cc: gcc-patches
Hi!
On Thu, Feb 06, 2020 at 05:16:14PM -0500, Vladimir Makarov wrote:
> --- a/gcc/lra-assigns.c
> +++ b/gcc/lra-assigns.c
> @@ -964,6 +964,8 @@ spill_for (int regno, bitmap spilled_pseudo_bitmap, bool first_p)
> bitmap_clear (&spill_pseudos_bitmap);
> for (j = hard_regno_nregs (hard_regno, mode) - 1; j >= 0; j--)
> {
> + if (hard_regno + j >= FIRST_PSEUDO_REGISTER)
> + break;
if (!HARD_REGISTER_NUM_P (hard_regno + j))
?
Segher
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