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re PR target/18910 (unrecognisable insn in regclass on x86/amd64)

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PR target/18910
        * config/i386/i386.c (ix86_expand_move): Handle tls symbols
        with an offset.

Co-Authored-By: Richard Henderson <rth@redhat.com>

From-SVN: r92968
This commit is contained in:
Jan Hubicka 2005-01-05 21:29:06 +01:00 • committed by Richard Henderson
parent 2cdb314898
commit d2ad2c8a9c
3 changed files with 45 additions and 6 deletions
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7
gcc/ChangeLog
View file

@ -1,3 +1,10 @@
2005-01-05 Jan Hubicka <jh@suse.cz>
Richard Henderson <rth@redhat.com>
PR target/18910
* config/i386/i386.c (ix86_expand_move): Handle tls symbols
with an offset.
2005-01-05 Richard Henderson <rth@redhat.com>
PR target/12902

31
gcc/config/i386/i386.c
View file

@ -7472,13 +7472,32 @@ ix86_expand_move (enum machine_mode mode, rtx operands[])
op0 = operands[0];
op1 = operands[1];
model = GET_CODE (op1) == SYMBOL_REF ? SYMBOL_REF_TLS_MODEL (op1) : 0;
if (model)
if (GET_CODE (op1) == SYMBOL_REF)
{
op1 = legitimize_tls_address (op1, model, true);
op1 = force_operand (op1, op0);
if (op1 == op0)
return;
model = SYMBOL_REF_TLS_MODEL (op1);
if (model)
{
op1 = legitimize_tls_address (op1, model, true);
op1 = force_operand (op1, op0);
if (op1 == op0)
return;
}
}
else if (GET_CODE (op1) == CONST
&& GET_CODE (XEXP (op1, 0)) == PLUS
&& GET_CODE (XEXP (XEXP (op1, 0), 0)) == SYMBOL_REF)
{
model = SYMBOL_REF_TLS_MODEL (XEXP (XEXP (op1, 0), 0));
if (model)
{
rtx addend = XEXP (XEXP (op1, 0), 1);
op1 = legitimize_tls_address (XEXP (XEXP (op1, 0), 0), model, true);
op1 = force_operand (op1, NULL);
op1 = expand_simple_binop (Pmode, PLUS, op1, addend,
op0, 1, OPTAB_DIRECT);
if (op1 == op0)
return;
}
}
if (flag_pic && mode == Pmode && symbolic_operand (op1, Pmode))

13
gcc/testsuite/gcc.dg/tls/opt-8.c Normal file
View file

@ -0,0 +1,13 @@
/* PR 18910 */
/* { dg-do compile } */
/* { dg-options "-O2" } */
static __thread void *foo [2];
void
test1 (void)
{
unsigned int s;
for (s = 0; s < 2; ++s)
foo [s] = &foo[s];
}