blob: 198136b98a5b86b8d3135583730b48336de9a5c4 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
From patchwork Wed Nov 25 17:59:13 2015
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: patch to fix PR67954
From: Vladimir Makarov <vmakarov@redhat.com>
X-Patchwork-Id: 548683
Message-Id: <5655F6F1.4020304@redhat.com>
To: gcc-patches <gcc-patches@gcc.gnu.org>
Date: Wed, 25 Nov 2015 12:59:13 -0500
The following patch fixes
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67954
The patch was bootstrapped on x86/x86-64. The test is too big and was
not included to the patch.
Committed as rev. 230893 to gcc-5 branch and as rev. 230894 to trunk.
Index: lra-constraints.c
===================================================================
--- a/gcc/lra-constraints.c (revision 230887)
+++ b/gcc/lra-constraints.c (working copy)
@@ -3738,7 +3738,8 @@ curr_insn_transform (bool check_only_p)
assigment pass and the scratch pseudo will be
spilled. Spilled scratch pseudos are transformed
back to scratches at the LRA end. */
- && lra_former_scratch_operand_p (curr_insn, i))
+ && lra_former_scratch_operand_p (curr_insn, i)
+ && lra_former_scratch_p (REGNO (op)))
{
int regno = REGNO (op);
lra_change_class (regno, NO_REGS, " Change to", true);
@@ -3747,6 +3748,8 @@ curr_insn_transform (bool check_only_p)
spilled pseudo as there is only one such insn, the
current one. */
reg_renumber[regno] = -1;
+ lra_assert (bitmap_single_bit_set_p
+ (&lra_reg_info[REGNO (op)].insn_bitmap));
}
/* We can do an optional reload. If the pseudo got a hard
reg, we might improve the code through inheritance. If
|
