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i386.c (legitimate_constant_p): UNSPEC_TP is not legitimate constant.

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* config/i386/i386.c (legitimate_constant_p): UNSPEC_TP is not
	legitimate constant.
	(legitimate_pic_operand_p): Neither pic operand.
	(legitimate_address_p): But legitimate address.
	(get_thread_pointer): Generate MEM/u instead of CONST around
	UNSPEC_TP.
	(print_operand): Remove printing of UNSPEC_TP.
	(print_operand_address): And print it here.

	* gcc.dg/tls/opt-2.c: New test.

From-SVN: r56143
This commit is contained in:
Jakub Jelinek 2002-08-09 02:01:12 +02:00
parent 7b9be5c7cb
commit 9e20be0cb2
4 changed files with 91 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
gcc/ChangeLog
View File

@ -1,4 +1,16 @@
2002-08-08 Jakub Jelinek <jakub@redhat.com>
* config/i386/i386.c (legitimate_constant_p): UNSPEC_TP is not
legitimate constant.
(legitimate_pic_operand_p): Neither pic operand.
(legitimate_address_p): But legitimate address.
(get_thread_pointer): Generate MEM/u instead of CONST around
UNSPEC_TP.
(print_operand): Remove printing of UNSPEC_TP.
(print_operand_address): And print it here.
2002-08-08 Devang Patel <dpatel@apple.com>
* objc/objc-act.c (build_selector_translation_table): Issue warning,
when -Wselector is used,if method for which selector is being
created does not exist.

36
gcc/config/i386/i386.c
View File

@ -4850,8 +4850,6 @@ legitimate_constant_p (x)
{
case UNSPEC_TPOFF:
return local_exec_symbolic_operand (XVECEXP (inner, 0, 0), Pmode);
case UNSPEC_TP:
return true;
default:
return false;
}
@ -4914,8 +4912,6 @@ legitimate_pic_operand_p (x)
{
case UNSPEC_TPOFF:
return local_exec_symbolic_operand (XVECEXP (inner, 0, 0), Pmode);
case UNSPEC_TP:
return true;
default:
return false;
}
@ -5054,6 +5050,13 @@ legitimate_address_p (mode, addr, strict)
debug_rtx (addr);
}
if (GET_CODE (addr) == UNSPEC && XINT (addr, 1) == UNSPEC_TP)
{
if (TARGET_DEBUG_ADDR)
fprintf (stderr, "Success.\n");
return TRUE;
}
if (ix86_decompose_address (addr, &parts) <= 0)
{
reason = "decomposition failed";
@ -5521,7 +5524,9 @@ get_thread_pointer ()
rtx tp;
tp = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, const0_rtx), UNSPEC_TP);
tp = gen_rtx_CONST (Pmode, tp);
tp = gen_rtx_MEM (Pmode, tp);
RTX_UNCHANGING_P (tp) = 1;
set_mem_alias_set (tp, ix86_GOT_alias_set ());
tp = force_reg (Pmode, tp);
return tp;
@ -6611,17 +6616,6 @@ print_operand (file, x, code)
fprintf (file, "%s", dstr);
}
else if (GET_CODE (x) == CONST
&& GET_CODE (XEXP (x, 0)) == UNSPEC
&& XINT (XEXP (x, 0), 1) == UNSPEC_TP)
{
if (ASSEMBLER_DIALECT == ASM_INTEL)
fputs ("DWORD PTR ", file);
if (ASSEMBLER_DIALECT == ASM_ATT || USER_LABEL_PREFIX[0] == 0)
putc ('%', file);
fputs ("gs:0", file);
}
else
{
if (code != 'P')
@ -6660,6 +6654,16 @@ print_operand_address (file, addr)
rtx base, index, disp;
int scale;
if (GET_CODE (addr) == UNSPEC && XINT (addr, 1) == UNSPEC_TP)
{
if (ASSEMBLER_DIALECT == ASM_INTEL)
fputs ("DWORD PTR ", file);
if (ASSEMBLER_DIALECT == ASM_ATT || USER_LABEL_PREFIX[0] == 0)
putc ('%', file);
fputs ("gs:0", file);
return;
}
if (! ix86_decompose_address (addr, &parts))
abort ();

7
gcc/testsuite/ChangeLog
View File

@ -1,5 +1,10 @@
2002-08-08 Jakub Jelinek <jakub@redhat.com>
* gcc.dg/tls/opt-2.c: New test.
2002-08-08 Devang Patel <dpatel@apple.com>
*objc.dg/selector-1.m : New test
* objc.dg/selector-1.m : New test
2002-08-08 Nathan Sidwell <nathan@codesourcery.com>

53
gcc/testsuite/gcc.dg/tls/opt-2.c Normal file
View File

@ -0,0 +1,53 @@
/* This testcase generated invalid assembly on IA-32,
since %gs:0 memory load was not exposed to the compiler
as memory load and mem to mem moves are not possible
on IA-32. */
/* { dg-do link } */
/* { dg-options "-O2 -ftls-model=initial-exec" } */
/* { dg-options "-O2 -ftls-model=initial-exec -march=i686" { target i?86-*-* } } */
__thread int thr;
struct A
{
unsigned int a, b, c, d, e;
};
int bar (int x, unsigned long y, void *z)
{
return 0;
}
int
foo (int x, int y, const struct A *z)
{
struct A b;
int d;
b = *z;
d = bar (x, y, &b);
if (d == 0 && y == 0x5402)
{
int e = thr;
d = bar (x, 0x5401, &b);
if (d)
{
thr = e;
d = 0;
}
else if ((z->c & 0600) != (b.c & 0600)
|| ((z->c & 060) && ((z->c & 060) != (b.c & 060))))
{
thr = 22;
d = -1;
}
}
return d;
}
int main (void)
{
foo (1, 2, 0);
return 0;
}