mirror/gcc
2
0
Fork 0
mirror of git://gcc.gnu.org/git/gcc.git synced 2025-01-11 22:45:44 +08:00
Code Issues Packages Projects Releases Wiki Activity

re PR debug/51695 (NOTE_INSN_VAR_LOCATION notes are sometimes too large)

Browse Source 
PR debug/51695
	* dwarf2out.c (output_loc_list): For now drop >= 64KB expressions
	in .debug_loc on the floor.

	* gcc.dg/pr51695.c: New test.

From-SVN: r182886
This commit is contained in:
Jakub Jelinek 2012-01-04 20:58:03 +01:00 committed by Jakub Jelinek
parent 03a9ba1e28
commit 5dc28f42b4
4 changed files with 70 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
gcc/ChangeLog
View File

@ -1,3 +1,9 @@
2012-01-04 Jakub Jelinek <jakub@redhat.com>
PR debug/51695
* dwarf2out.c (output_loc_list): For now drop >= 64KB expressions
in .debug_loc on the floor.
2012-01-04 Andrew Pinski <apinski@cavium.com>
* doc/invoke.texi (-march=@var{arch}): Add octeon+ and octeon2.

8
gcc/dwarf2out.c
View File

@ -8166,6 +8166,13 @@ output_loc_list (dw_loc_list_ref list_head)
/* Don't output an entry that starts and ends at the same address. */
if (strcmp (curr->begin, curr->end) == 0 && !curr->force)
continue;
size = size_of_locs (curr->expr);
/* If the expression is too large, drop it on the floor. We could
perhaps put it into DW_TAG_dwarf_procedure and refer to that
in the expression, but >= 64KB expressions for a single value
in a single range are unlikely very useful. */
if (size > 0xffff)
continue;
if (!have_multiple_function_sections)
{
dw2_asm_output_delta (DWARF2_ADDR_SIZE, curr->begin, curr->section,
@ -8184,7 +8191,6 @@ output_loc_list (dw_loc_list_ref list_head)
"Location list end address (%s)",
list_head->ll_symbol);
}
size = size_of_locs (curr->expr);
/* Output the block length for this list of location operations. */
gcc_assert (size <= 0xffff);

5
gcc/testsuite/ChangeLog
View File

@ -1,3 +1,8 @@
2012-01-04 Jakub Jelinek <jakub@redhat.com>
PR debug/51695
* gcc.dg/pr51695.c: New test.
2012-01-04 Andrew Pinski <apinski@cavium.com>
* gcc.target/mips/mips64-dsp-ldx1.c: New test.

52
gcc/testsuite/gcc.dg/pr51695.c Normal file
View File

@ -0,0 +1,52 @@
/* PR debug/51695 */
/* { dg-do compile { target { int32plus } } } */
/* { dg-options "-O2 -g" } */
typedef struct
{
struct { unsigned int t1, t2, t3, t4, t5, t6; } t;
int p;
struct { double X, Y, Z; } r;
} T;
typedef struct { T *h; } S;
static unsigned int v = 0x12345678;
int
foo (void)
{
v = (v & 0x80000000) ? ((v << 1) ^ 0xa398655d) : (v << 1);
return 0;
}
double
bar (void)
{
unsigned int o;
v = (v & 0x80000000) ? ((v << 1) ^ 0xa398655d) : (v << 1);
o = v & 0xffff;
return (double) o / 32768.0;
}
int
baz (void)
{
foo ();
return 0;
}
void
test (S *x)
{
T *t = x->h;
t->t.t1 = foo ();
t->t.t2 = foo ();
t->t.t3 = foo ();
t->t.t4 = foo ();
t->t.t5 = foo ();
t->t.t6 = foo ();
t->p = baz ();
t->r.X = bar ();
t->r.Y = bar ();
t->r.Z = bar ();
}