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| author | John David Anglin <danglin@gcc.gnu.org> | 2015-02-20 00:33:24 +0000 |
|---|---|---|
| committer | John David Anglin <danglin@gcc.gnu.org> | 2015-02-20 00:33:24 +0000 |
| commit | 283b768c860d632cb50af82a459a9f4c985f3cbf (patch) | |
| tree | 9b0325cc8820c69c2f665d7ce9701f0a9ba47f02 /gcc/config/pa/pa.c | |
| parent | 6e6938b476f5fb298cdb5d1c71d41cec8f352515 (diff) | |
| download | gcc-283b768c860d632cb50af82a459a9f4c985f3cbf.zip gcc-283b768c860d632cb50af82a459a9f4c985f3cbf.tar.gz gcc-283b768c860d632cb50af82a459a9f4c985f3cbf.tar.bz2 | |
pa.c (pa_emit_move_sequence): Always force (const (plus (symbol) (const_int))) to const mem.
* config/pa/pa.c (pa_emit_move_sequence): Always force
(const (plus (symbol) (const_int))) to const mem. Put REG_EQUAL
note on insn.
From-SVN: r220833
Diffstat (limited to 'gcc/config/pa/pa.c')
| -rw-r--r-- | gcc/config/pa/pa.c | 27 |
1 files changed, 15 insertions, 12 deletions
diff --git a/gcc/config/pa/pa.c b/gcc/config/pa/pa.c index ecb1724..2f2735c 100644 --- a/gcc/config/pa/pa.c +++ b/gcc/config/pa/pa.c @@ -2008,6 +2008,7 @@ pa_emit_move_sequence (rtx *operands, machine_mode mode, rtx scratch_reg) if (flag_pic) { + rtx_insn *insn; rtx temp; if (reload_in_progress || reload_completed) @@ -2021,29 +2022,31 @@ pa_emit_move_sequence (rtx *operands, machine_mode mode, rtx scratch_reg) else temp = gen_reg_rtx (Pmode); - /* (const (plus (symbol) (const_int))) must be forced to - memory during/after reload if the const_int will not fit - in 14 bits. */ + /* Force (const (plus (symbol) (const_int))) to memory + if the const_int will not fit in 14 bits. Although + this requires a relocation, the instruction sequence + needed to load the value is shorter. */ if (GET_CODE (operand1) == CONST && GET_CODE (XEXP (operand1, 0)) == PLUS && GET_CODE (XEXP (XEXP (operand1, 0), 1)) == CONST_INT - && !INT_14_BITS (XEXP (XEXP (operand1, 0), 1)) - && (reload_completed || reload_in_progress) - && flag_pic) + && !INT_14_BITS (XEXP (XEXP (operand1, 0), 1))) { - rtx const_mem = force_const_mem (mode, operand1); - operands[1] = legitimize_pic_address (XEXP (const_mem, 0), - mode, temp); - operands[1] = replace_equiv_address (const_mem, operands[1]); - pa_emit_move_sequence (operands, mode, temp); + rtx x, m = force_const_mem (mode, operand1); + + x = legitimize_pic_address (XEXP (m, 0), mode, temp); + x = replace_equiv_address (m, x); + insn = emit_move_insn (operand0, x); } else { operands[1] = legitimize_pic_address (operand1, mode, temp); if (REG_P (operand0) && REG_P (operands[1])) copy_reg_pointer (operand0, operands[1]); - emit_insn (gen_rtx_SET (VOIDmode, operand0, operands[1])); + insn = emit_move_insn (operand0, operands[1]); } + + /* Put a REG_EQUAL note on this insn. */ + set_unique_reg_note (insn, REG_EQUAL, operand1); } /* On the HPPA, references to data space are supposed to use dp, register 27, but showing it in the RTL inhibits various cse |