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re PR middle-end/82556 (internal compiler error in curr_insn_transform, at lra-constraints.c:4307)

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2017-10-18  Vladimir Makarov  <vmakarov@redhat.com>

	PR middle-end/82556
	* lra-constraints.c (curr_insn_transform): Use non-input operand
	instead of output one for matched reload.

2017-10-18  Vladimir Makarov  <vmakarov@redhat.com>

	PR middle-end/82556
	* gcc.target/i386/pr82556.c: New.

From-SVN: r253862
This commit is contained in:
Vladimir Makarov 2017-10-18 16:44:27 +00:00 • committed by Vladimir Makarov
parent 957f0d8faf
commit 57d69a633c
4 changed files with 44 additions and 3 deletions
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6
gcc/ChangeLog
View file

@ -1,3 +1,9 @@
2017-10-18 Vladimir Makarov <vmakarov@redhat.com>
PR middle-end/82556
* lra-constraints.c (curr_insn_transform): Use non-input operand
instead of output one for matched reload.
2017-10-18 Bin Cheng <bin.cheng@arm.com>
* tree-loop-distribution.c (INCLUDE_ALGORITHM): New header file.

17
gcc/lra-constraints.c
View file

@ -4271,7 +4271,13 @@ curr_insn_transform (bool check_only_p)
}
else if (curr_static_id->operand[i].type == OP_IN
&& (curr_static_id->operand[goal_alt_matched[i][0]].type
== OP_OUT))
== OP_OUT
|| (curr_static_id->operand[goal_alt_matched[i][0]].type
== OP_INOUT
&& (operands_match_p
(*curr_id->operand_loc[i],
*curr_id->operand_loc[goal_alt_matched[i][0]],
-1)))))
{
/* generate reloads for input and matched outputs. */
match_inputs[0] = i;
@ -4282,9 +4288,14 @@ curr_insn_transform (bool check_only_p)
[goal_alt_number * n_operands + goal_alt_matched[i][0]]
.earlyclobber);
}
else if (curr_static_id->operand[i].type == OP_OUT
else if ((curr_static_id->operand[i].type == OP_OUT
|| (curr_static_id->operand[i].type == OP_INOUT
&& (operands_match_p
(*curr_id->operand_loc[i],
*curr_id->operand_loc[goal_alt_matched[i][0]],
-1))))
&& (curr_static_id->operand[goal_alt_matched[i][0]].type
== OP_IN))
== OP_IN))
/* Generate reloads for output and matched inputs. */
match_reload (i, goal_alt_matched[i], outputs, goal_alt[i], &before,
&after, curr_static_id->operand_alternative

5
gcc/testsuite/ChangeLog
View file

@ -1,3 +1,8 @@
2017-10-18 Vladimir Makarov <vmakarov@redhat.com>
PR middle-end/82556
* gcc.target/i386/pr82556.c: New.
2017-10-18 Bin Cheng <bin.cheng@arm.com>
* gcc.dg/tree-ssa/ldist-17.c: Adjust test string.

19
gcc/testsuite/gcc.target/i386/pr82556.c Normal file
View file

@ -0,0 +1,19 @@
/* { dg-do compile } */
/* { dg-options "-O2 -fno-strict-aliasing -fwrapv -fexcess-precision=standard" } */
extern int foo();
typedef struct {
char id;
unsigned char fork_flags;
short data_length;
} Header;
int a;
void X() {
do {
char* b;
Header c;
if (a)
c.fork_flags |= 1;
__builtin_memcpy(b, &c, __builtin_offsetof(Header, data_length));
b += foo();
} while (1);
}