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re PR tree-optimization/70169 (ICE at -O1 and above on x86_64-linux-gnu in gen_lsm_tmp_name, at tree-ssa-loop.c:791)

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PR tree-optimization/70169
	* tree-ssa-loop.c (gen_lsm_tmp_name): Handle FUNCTION_DECL and
	LABEL_DECL like VAR_DECL.  Emit nothing instead of gcc_unreachable
	for unknown codes.

	* gcc.dg/pr70169.c: New test.

From-SVN: r234136
This commit is contained in:
Jakub Jelinek 2016-03-11 13:05:58 +01:00 committed by Jakub Jelinek
parent 0f9befa141
commit 02d472a2cb
4 changed files with 55 additions and 3 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2016-03-11 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/70169
* tree-ssa-loop.c (gen_lsm_tmp_name): Handle FUNCTION_DECL and
LABEL_DECL like VAR_DECL. Emit nothing instead of gcc_unreachable
for unknown codes.
2016-03-11 Ilya Enkovich <enkovich.gnu@gmail.com>
Jakub Jelinek <jakub@redhat.com>

5
gcc/testsuite/ChangeLog
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@ -1,3 +1,8 @@
2016-03-11 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/70169
* gcc.dg/pr70169.c: New test.
2016-03-11 Ilya Enkovich <enkovich.gnu@gmail.com>
PR target/70160

40
gcc/testsuite/gcc.dg/pr70169.c Normal file
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@ -0,0 +1,40 @@
/* PR tree-optimization/70169 */
/* { dg-do compile } */
/* { dg-options "-O2 -fno-strict-aliasing -fno-tree-dce" } */
int printf (const char *, ...);
void
foo ()
{
unsigned char *p = (unsigned char *) &printf;
for (;;)
(*p)++;
}
void
bar (int x)
{
unsigned char *p = (unsigned char *) &printf;
int i;
for (i = 0; i < x; i++)
(*p)++;
}
void
baz (int x, int y)
{
unsigned char *p = (unsigned char *) &&lab;
int i;
if (y)
{
for (i = 0; i < x; i++)
(*p)++;
}
else
{
lab:
asm volatile ("");
foo ();
}
}

6
gcc/tree-ssa-loop.c
View File

@ -769,6 +769,8 @@ gen_lsm_tmp_name (tree ref)
case SSA_NAME:
case VAR_DECL:
case PARM_DECL:
case FUNCTION_DECL:
case LABEL_DECL:
name = get_name (ref);
if (!name)
name = "D";
@ -784,11 +786,9 @@ gen_lsm_tmp_name (tree ref)
break;
case INTEGER_CST:
default:
/* Nothing. */
break;
default:
gcc_unreachable ();
}
}