arm.c (pic_labelno): New.
* config/arm/arm.c (pic_labelno): New. (arm_load_pic_register): Use an UNSPEC_PIC_LABEL instead of a LABEL_REF. Pass only the labelno to PIC insns. (arm_call_tls_get_addr, legitimize_tls_address): Likewise. (arm_output_addr_const_extra): Handle UNSPEC_PIC_LABEL. * arm.md (UNSPEC_PIC_LABEL): New constant. (pic_add_dot_plus_four, pic_add_dot_plus_eight) (tls_load_dot_plus_eight): Expect a labelno instead of a LABEL_REF. Use the correct label prefix. From-SVN: r106893
This commit is contained in:
parent
e66e1c6806
commit
f16fe45f32
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@ -1,3 +1,15 @@
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2005-11-14 Daniel Jacobowitz <dan@codesourcery.com>
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* config/arm/arm.c (pic_labelno): New.
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(arm_load_pic_register): Use an UNSPEC_PIC_LABEL instead of a
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LABEL_REF. Pass only the labelno to PIC insns.
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(arm_call_tls_get_addr, legitimize_tls_address): Likewise.
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(arm_output_addr_const_extra): Handle UNSPEC_PIC_LABEL.
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* arm.md (UNSPEC_PIC_LABEL): New constant.
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(pic_add_dot_plus_four, pic_add_dot_plus_eight)
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(tls_load_dot_plus_eight): Expect a labelno instead of a LABEL_REF.
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Use the correct label prefix.
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2005-11-14 Daniel Jacobowitz <dan@codesourcery.com>
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* config/arm/arm.c (legitimize_tls_address): Use correct rtx for
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@ -3340,6 +3340,7 @@ thumb_find_work_register (unsigned long pushed_regs_mask)
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gcc_unreachable ();
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}
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static GTY(()) int pic_labelno;
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/* Generate code to load the PIC register. In thumb mode SCRATCH is a
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low register. */
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@ -3348,7 +3349,7 @@ void
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arm_load_pic_register (unsigned long saved_regs ATTRIBUTE_UNUSED)
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{
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#ifndef AOF_ASSEMBLER
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rtx l1, pic_tmp, pic_tmp2, pic_rtx;
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rtx l1, labelno, pic_tmp, pic_tmp2, pic_rtx;
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rtx global_offset_table;
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if (current_function_uses_pic_offset_table == 0 || TARGET_SINGLE_PIC_BASE)
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@ -3356,12 +3357,17 @@ arm_load_pic_register (unsigned long saved_regs ATTRIBUTE_UNUSED)
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gcc_assert (flag_pic);
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l1 = gen_label_rtx ();
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/* We use an UNSPEC rather than a LABEL_REF because this label never appears
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in the code stream. */
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labelno = GEN_INT (pic_labelno++);
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l1 = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, labelno), UNSPEC_PIC_LABEL);
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l1 = gen_rtx_CONST (VOIDmode, l1);
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global_offset_table = gen_rtx_SYMBOL_REF (Pmode, "_GLOBAL_OFFSET_TABLE_");
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/* On the ARM the PC register contains 'dot + 8' at the time of the
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addition, on the Thumb it is 'dot + 4'. */
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pic_tmp = plus_constant (gen_rtx_LABEL_REF (Pmode, l1), TARGET_ARM ? 8 : 4);
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pic_tmp = plus_constant (l1, TARGET_ARM ? 8 : 4);
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if (GOT_PCREL)
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pic_tmp2 = gen_rtx_CONST (VOIDmode,
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gen_rtx_PLUS (Pmode, global_offset_table, pc_rtx));
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@ -3374,7 +3380,7 @@ arm_load_pic_register (unsigned long saved_regs ATTRIBUTE_UNUSED)
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{
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emit_insn (gen_pic_load_addr_arm (pic_offset_table_rtx, pic_rtx));
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emit_insn (gen_pic_add_dot_plus_eight (pic_offset_table_rtx,
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pic_offset_table_rtx, l1));
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pic_offset_table_rtx, labelno));
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}
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else
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{
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@ -3390,7 +3396,7 @@ arm_load_pic_register (unsigned long saved_regs ATTRIBUTE_UNUSED)
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else
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emit_insn (gen_pic_load_addr_thumb (pic_offset_table_rtx, pic_rtx));
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emit_insn (gen_pic_add_dot_plus_four (pic_offset_table_rtx,
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pic_offset_table_rtx, l1));
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pic_offset_table_rtx, labelno));
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}
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/* Need to emit this whether or not we obey regdecls,
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@ -3822,22 +3828,24 @@ load_tls_operand (rtx x, rtx reg)
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static rtx
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arm_call_tls_get_addr (rtx x, rtx reg, rtx *valuep, int reloc)
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{
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rtx insns, label, sum;
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rtx insns, label, labelno, sum;
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start_sequence ();
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label = gen_label_rtx ();
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labelno = GEN_INT (pic_labelno++);
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label = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, labelno), UNSPEC_PIC_LABEL);
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label = gen_rtx_CONST (VOIDmode, label);
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sum = gen_rtx_UNSPEC (Pmode,
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gen_rtvec (4, x, GEN_INT (reloc),
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gen_rtx_LABEL_REF (Pmode, label),
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gen_rtvec (4, x, GEN_INT (reloc), label,
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GEN_INT (TARGET_ARM ? 8 : 4)),
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UNSPEC_TLS);
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reg = load_tls_operand (sum, reg);
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if (TARGET_ARM)
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emit_insn (gen_pic_add_dot_plus_eight (reg, reg, label));
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emit_insn (gen_pic_add_dot_plus_eight (reg, reg, labelno));
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else
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emit_insn (gen_pic_add_dot_plus_four (reg, reg, label));
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emit_insn (gen_pic_add_dot_plus_four (reg, reg, labelno));
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*valuep = emit_library_call_value (get_tls_get_addr (), NULL_RTX, LCT_PURE, /* LCT_CONST? */
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Pmode, 1, reg, Pmode);
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@ -3851,7 +3859,7 @@ arm_call_tls_get_addr (rtx x, rtx reg, rtx *valuep, int reloc)
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rtx
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legitimize_tls_address (rtx x, rtx reg)
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{
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rtx dest, tp, label, sum, insns, ret, eqv, addend;
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rtx dest, tp, label, labelno, sum, insns, ret, eqv, addend;
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unsigned int model = SYMBOL_REF_TLS_MODEL (x);
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switch (model)
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@ -3879,19 +3887,20 @@ legitimize_tls_address (rtx x, rtx reg)
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return gen_rtx_PLUS (Pmode, dest, addend);
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case TLS_MODEL_INITIAL_EXEC:
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label = gen_label_rtx ();
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labelno = GEN_INT (pic_labelno++);
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label = gen_rtx_UNSPEC (Pmode, gen_rtvec (1, labelno), UNSPEC_PIC_LABEL);
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label = gen_rtx_CONST (VOIDmode, label);
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sum = gen_rtx_UNSPEC (Pmode,
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gen_rtvec (4, x, GEN_INT (TLS_IE32),
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gen_rtx_LABEL_REF (Pmode, label),
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gen_rtvec (4, x, GEN_INT (TLS_IE32), label,
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GEN_INT (TARGET_ARM ? 8 : 4)),
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UNSPEC_TLS);
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reg = load_tls_operand (sum, reg);
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if (TARGET_ARM)
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emit_insn (gen_tls_load_dot_plus_eight (reg, reg, label));
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emit_insn (gen_tls_load_dot_plus_eight (reg, reg, labelno));
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else
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{
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emit_insn (gen_pic_add_dot_plus_four (reg, reg, label));
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emit_insn (gen_pic_add_dot_plus_four (reg, reg, labelno));
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emit_move_insn (reg, gen_const_mem (SImode, reg));
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}
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@ -15431,6 +15440,16 @@ arm_output_addr_const_extra (FILE *fp, rtx x)
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{
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if (GET_CODE (x) == UNSPEC && XINT (x, 1) == UNSPEC_TLS)
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return arm_emit_tls_decoration (fp, x);
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else if (GET_CODE (x) == UNSPEC && XINT (x, 1) == UNSPEC_PIC_LABEL)
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{
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char label[256];
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int labelno = INTVAL (XVECEXP (x, 0, 0));
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ASM_GENERATE_INTERNAL_LABEL (label, "LPIC", labelno);
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assemble_name_raw (fp, label);
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return TRUE;
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}
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else if (GET_CODE (x) == CONST_VECTOR)
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return arm_emit_vector_const (fp, x);
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@ -91,6 +91,8 @@
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(UNSPEC_WMADDS 18) ; Used by the intrinsic form of the iWMMXt WMADDS instruction.
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(UNSPEC_WMADDU 19) ; Used by the intrinsic form of the iWMMXt WMADDU instruction.
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(UNSPEC_TLS 20) ; A symbol that has been treated properly for TLS usage.
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(UNSPEC_PIC_LABEL 21) ; A label used for PIC access that does not appear in the
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; instruction stream.
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]
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)
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(unspec:SI [(plus:SI (match_operand:SI 1 "register_operand" "0")
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(const (plus:SI (pc) (const_int 4))))]
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UNSPEC_PIC_BASE))
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(use (label_ref (match_operand 2 "" "")))]
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(use (match_operand 2 "" ""))]
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"TARGET_THUMB"
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"*
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(*targetm.asm_out.internal_label) (asm_out_file, \"L\",
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CODE_LABEL_NUMBER (operands[2]));
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(*targetm.asm_out.internal_label) (asm_out_file, \"LPIC\",
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INTVAL (operands[2]));
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return \"add\\t%0, %|pc\";
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"
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[(set_attr "length" "2")]
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(unspec:SI [(plus:SI (match_operand:SI 1 "register_operand" "r")
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(const (plus:SI (pc) (const_int 8))))]
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UNSPEC_PIC_BASE))
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(use (label_ref (match_operand 2 "" "")))]
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(use (match_operand 2 "" ""))]
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"TARGET_ARM"
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"*
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(*targetm.asm_out.internal_label) (asm_out_file, \"L\",
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CODE_LABEL_NUMBER (operands[2]));
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(*targetm.asm_out.internal_label) (asm_out_file, \"LPIC\",
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INTVAL (operands[2]));
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return \"add%?\\t%0, %|pc, %1\";
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"
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[(set_attr "predicable" "yes")]
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(mem:SI (unspec:SI [(plus:SI (match_operand:SI 1 "register_operand" "r")
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(const (plus:SI (pc) (const_int 8))))]
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UNSPEC_PIC_BASE)))
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(use (label_ref (match_operand 2 "" "")))]
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(use (match_operand 2 "" ""))]
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"TARGET_ARM"
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"*
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(*targetm.asm_out.internal_label) (asm_out_file, \"L\",
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CODE_LABEL_NUMBER (operands[2]));
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(*targetm.asm_out.internal_label) (asm_out_file, \"LPIC\",
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INTVAL (operands[2]));
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return \"ldr%?\\t%0, [%|pc, %1]\t\t@ tls_load_dot_plus_eight\";
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"
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[(set_attr "predicable" "yes")]
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