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re PR debug/45259 (ICE in save_call_clobbered_regs) 

PR debug/45259
	* caller-save.c (save_call_clobbered_regs): Only swap notes with
	DEBUG_INSNs if n_regs_saved.

	* gcc.dg/pr45259.c: New test.

From-SVN: r163185
This commit is contained in:
Jakub Jelinek 2010-08-12 11:04:48 +02:00 committed by Jakub Jelinek
parent 3565ffedc8
commit 49b48605c8
4 changed files with 57 additions and 1 deletions
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6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2010-08-12 Jakub Jelinek <jakub@redhat.com>
PR debug/45259
* caller-save.c (save_call_clobbered_regs): Only swap notes with
DEBUG_INSNs if n_regs_saved.
2010-08-12 Wei Guozhi <carrot@google.com>
PR target/44999

5
gcc/caller-save.c
View File

@ -868,7 +868,10 @@ save_call_clobbered_regs (void)
remain saved. If the last insn in the block is a JUMP_INSN, put
the restore before the insn, otherwise, put it after the insn. */
if (DEBUG_INSN_P (insn) && last && last->block == chain->block)
if (n_regs_saved
&& DEBUG_INSN_P (insn)
&& last
&& last->block == chain->block)
{
rtx ins, prev;
basic_block bb = BLOCK_FOR_INSN (insn);

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2010-08-12 Jakub Jelinek <jakub@redhat.com>
PR debug/45259
* gcc.dg/pr45259.c: New test.
2010-08-12 Wei Guozhi <carrot@google.com>
PR target/44999

42
gcc/testsuite/gcc.dg/pr45259.c Normal file
View File

@ -0,0 +1,42 @@
/* PR debug/45259 */
/* { dg-do compile } */
/* { dg-options "-g -O2 -fpic -w" { target fpic } } */
struct S { void (*bar) (long); };
struct T { struct S *t; };
int w;
extern int baz (int);
void
foo (int x, int u, char *z)
{
struct T *v;
static void *y[256] = { &&l1, &&l2 };
for (;;)
switch (x)
{
l2:
x = 9;
case 9:
goto *y[*z++];
case 10:
case 27:
case 54:
case 99:
case 100:
case 120:
case 122:
case 131:
case 132:
case 134:
case 141:
case 142:
v->t->bar (u);
v->t->bar (u);
case 143:
continue;
l1:
default:
baz (w);
}
}