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re PR target/29198 (Incorrect reference to __thread array with -fPIC -O2 on x86) 

PR target/29198
	* config/i386/i386.c (legitimize_pic_address): Reject TLS symbols.
	* config/i386/predicates.md (local_symbolic_operand): Likewise.

	* gcc.dg/tls/opt-12.c: New test.

From-SVN: r117483
This commit is contained in:
Jakub Jelinek 2006-10-06 09:25:02 +02:00 committed by Jakub Jelinek
parent 9eccb94dff
commit c1a46941d4
5 changed files with 61 additions and 1 deletions
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4
gcc/ChangeLog
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@ -1,5 +1,9 @@
2006-10-06 Jakub Jelinek <jakub@redhat.com>
PR target/29198
* config/i386/i386.c (legitimize_pic_address): Reject TLS symbols.
* config/i386/predicates.md (local_symbolic_operand): Likewise.
PR c/29091
* varasm.c (output_constant): If TREE_VECTOR_CST_ELTS chain is shorter than
the number of vector elements fill the rest with zeros.

2
gcc/config/i386/i386.c
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@ -6623,7 +6623,7 @@ legitimize_pic_address (rtx orig, rtx reg)
new = reg;
}
}
else if (GET_CODE (addr) == SYMBOL_REF)
else if (GET_CODE (addr) == SYMBOL_REF && SYMBOL_REF_TLS_MODEL (addr) == 0)
{
if (TARGET_64BIT)
{

3
gcc/config/i386/predicates.md
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@ -447,6 +447,9 @@
if (GET_CODE (op) != SYMBOL_REF)
return 0;
if (SYMBOL_REF_TLS_MODEL (op) != 0)
return 0;
if (SYMBOL_REF_LOCAL_P (op))
return 1;

3
gcc/testsuite/ChangeLog
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@ -1,5 +1,8 @@
2006-10-06 Jakub Jelinek <jakub@redhat.com>
PR target/29198
* gcc.dg/tls/opt-12.c: New test.
PR fortran/28415
* gfortran.dg/save_2.f90: New test.

50
gcc/testsuite/gcc.dg/tls/opt-12.c Normal file
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@ -0,0 +1,50 @@
/* PR target/29198 */
/* { dg-do run } */
/* { dg-options "-O2 -fpic" } */
/* { dg-require-effective-target tls_runtime } */
/* { dg-require-effective-target fpic } */
extern void abort (void);
int f2 (int, int, int, int);
struct s { char b[4]; };
__thread struct s thra[2];
void
__attribute__((noinline))
f1 (int a1, int a2)
{
int i, j;
for (i = 0; i < 4; i++)
{
int tot = 0;
for (j = 0; j < 4; j++)
tot += f2 (a1, a2, i, j);
*(&thra[0].b[0] + i) = tot;
}
}
int
__attribute__((noinline))
f2 (int a, int b, int c, int d)
{
return a + b + c + d;
}
int
main (void)
{
f1 (0, 0);
if (thra[0].b[0] != 6
|| thra[0].b[1] != 10
|| thra[0].b[2] != 14
|| thra[0].b[3] != 18)
abort ();
f1 (2, 3);
if (thra[0].b[0] != 26
|| thra[0].b[1] != 30
|| thra[0].b[2] != 34
|| thra[0].b[3] != 38)
abort ();
return 0;
}