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re PR target/21412 (ICE loading TLS address) 

PR target/21412
        * config/rs6000/rs6000.c (rs6000_emit_move): Look for tls addresses
        with constant offsets.

From-SVN: r99352
This commit is contained in:
Richard Henderson 2005-05-07 09:46:08 -07:00 committed by Richard Henderson
parent f2f84cbaeb
commit 84f52ebdf1
3 changed files with 35 additions and 4 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2005-05-07 Richard Henderson <rth@redhat.com>
PR target/21412
* config/rs6000/rs6000.c (rs6000_emit_move): Look for tls addresses
with constant offsets.
2005-05-07 Nathan Sidwell <nathan@codesourcery.com>
* config/v850/v850.c (print_operand): Use gcc_assert and

26
gcc/config/rs6000/rs6000.c
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@ -3575,11 +3575,29 @@ rs6000_emit_move (rtx dest, rtx source, enum machine_mode mode)
/* Recognize the case where operand[1] is a reference to thread-local
data and load its address to a register. */
if (GET_CODE (operands[1]) == SYMBOL_REF)
if (rs6000_tls_referenced_p (operands[1]))
{
enum tls_model model = SYMBOL_REF_TLS_MODEL (operands[1]);
if (model != 0)
operands[1] = rs6000_legitimize_tls_address (operands[1], model);
enum tls_model model;
rtx tmp = operands[1];
rtx addend = NULL;
if (GET_CODE (tmp) == CONST && GET_CODE (XEXP (tmp, 0)) == PLUS)
{
addend = XEXP (XEXP (tmp, 0), 1);
tmp = XEXP (XEXP (tmp, 0), 0);
}
gcc_assert (GET_CODE (tmp) == SYMBOL_REF);
model = SYMBOL_REF_TLS_MODEL (tmp);
gcc_assert (model != 0);
tmp = rs6000_legitimize_tls_address (tmp, model);
if (addend)
{
tmp = gen_rtx_PLUS (mode, tmp, addend);
tmp = force_operand (tmp, operands[0]);
}
operands[1] = tmp;
}
/* Handle the case where reload calls us with an invalid address. */

7
gcc/testsuite/gcc.dg/tls/opt-9.c Normal file
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@ -0,0 +1,7 @@
/* PR 21412 */
/* { dg-do compile */
/* { dg-options "-O2 -fPIC" } */
struct S { int x[10]; };
extern __thread struct S s;
int *foo() { return &s.x[2]; }