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| author | Vladimir Makarov <vmakarov@redhat.com> | 2013-02-08 21:59:11 +0000 |
|---|---|---|
| committer | Vladimir Makarov <vmakarov@gcc.gnu.org> | 2013-02-08 21:59:11 +0000 |
| commit | 25bb0bb5b0d6f5b0e23cd20f77cbddfcb41ca92a (patch) | |
| tree | 093ae21eea3793a243815803b375c53a1efbd413 /gcc/lra-constraints.c | |
| parent | a698cc0308468029029e0501815747284194e407 (diff) | |
| download | gcc-25bb0bb5b0d6f5b0e23cd20f77cbddfcb41ca92a.zip gcc-25bb0bb5b0d6f5b0e23cd20f77cbddfcb41ca92a.tar.gz gcc-25bb0bb5b0d6f5b0e23cd20f77cbddfcb41ca92a.tar.bz2 | |
re PR rtl-optimization/56246 (ICE in assign_by_spills, at lra-assigns.c:1262)
2013-02-08 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/56246
* lra-constraints.c (simplify_operand_subreg): Try tor reuse
reload pseudo.
* lra.c (lra): Clear lra_optional_reload_pseudos only when all
constraints are satisfied.
2013-02-08 Vladimir Makarov <vmakarov@redhat.com>
PR rtl-optimization/56246
* gcc.target/i386/pr56246.c: New test.
From-SVN: r195902
Diffstat (limited to 'gcc/lra-constraints.c')
| -rw-r--r-- | gcc/lra-constraints.c | 36 |
1 files changed, 19 insertions, 17 deletions
diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c index 13420eb..49c9723 100644 --- a/gcc/lra-constraints.c +++ b/gcc/lra-constraints.c @@ -1213,24 +1213,26 @@ simplify_operand_subreg (int nop, enum machine_mode reg_mode) enum reg_class rclass = (enum reg_class) targetm.preferred_reload_class (reg, ALL_REGS); - new_reg = lra_create_new_reg_with_unique_value (reg_mode, reg, rclass, - "subreg reg"); - bitmap_set_bit (&lra_optional_reload_pseudos, REGNO (new_reg)); - if (type != OP_OUT - || GET_MODE_SIZE (GET_MODE (reg)) > GET_MODE_SIZE (mode)) + if (get_reload_reg (curr_static_id->operand[nop].type, reg_mode, reg, + rclass, "subreg reg", &new_reg)) { - push_to_sequence (before); - lra_emit_move (new_reg, reg); - before = get_insns (); - end_sequence (); - } - if (type != OP_IN) - { - start_sequence (); - lra_emit_move (reg, new_reg); - emit_insn (after); - after = get_insns (); - end_sequence (); + bitmap_set_bit (&lra_optional_reload_pseudos, REGNO (new_reg)); + if (type != OP_OUT + || GET_MODE_SIZE (GET_MODE (reg)) > GET_MODE_SIZE (mode)) + { + push_to_sequence (before); + lra_emit_move (new_reg, reg); + before = get_insns (); + end_sequence (); + } + if (type != OP_IN) + { + start_sequence (); + lra_emit_move (reg, new_reg); + emit_insn (after); + after = get_insns (); + end_sequence (); + } } SUBREG_REG (operand) = new_reg; lra_process_new_insns (curr_insn, before, after, |