static bool
sparc_cannot_force_const_mem (machine_mode mode, rtx x)
{
- /* After IRA has run in PIC mode, it is too late to put anything into the
- constant pool if the PIC register hasn't already been initialized. */
- if ((lra_in_progress || reload_in_progress)
- && flag_pic
- && !crtl->uses_pic_offset_table)
- return true;
-
switch (GET_CODE (x))
{
case CONST_INT:
}
\f
/* Global Offset Table support. */
-static GTY(()) rtx got_helper_rtx = NULL_RTX;
-static GTY(()) rtx got_register_rtx = NULL_RTX;
static GTY(()) rtx got_symbol_rtx = NULL_RTX;
+static GTY(()) rtx got_register_rtx = NULL_RTX;
+static GTY(()) rtx got_helper_rtx = NULL_RTX;
+
+static GTY(()) bool got_helper_needed = false;
/* Return the SYMBOL_REF for the Global Offset Table. */
return got_symbol_rtx;
}
-#ifdef HAVE_GAS_HIDDEN
-# define USE_HIDDEN_LINKONCE 1
-#else
-# define USE_HIDDEN_LINKONCE 0
-#endif
-
-static void
-get_pc_thunk_name (char name[32], unsigned int regno)
-{
- const char *reg_name = reg_names[regno];
-
- /* Skip the leading '%' as that cannot be used in a
- symbol name. */
- reg_name += 1;
-
- if (USE_HIDDEN_LINKONCE)
- sprintf (name, "__sparc_get_pc_thunk.%s", reg_name);
- else
- ASM_GENERATE_INTERNAL_LABEL (name, "LADDPC", regno);
-}
-
/* Wrapper around the load_pcrel_sym{si,di} patterns. */
static rtx
return insn;
}
+/* Output the load_pcrel_sym{si,di} patterns. */
+
+const char *
+output_load_pcrel_sym (rtx *operands)
+{
+ if (flag_delayed_branch)
+ {
+ output_asm_insn ("sethi\t%%hi(%a1-4), %0", operands);
+ output_asm_insn ("call\t%a2", operands);
+ output_asm_insn (" add\t%0, %%lo(%a1+4), %0", operands);
+ }
+ else
+ {
+ output_asm_insn ("sethi\t%%hi(%a1-8), %0", operands);
+ output_asm_insn ("add\t%0, %%lo(%a1-4), %0", operands);
+ output_asm_insn ("call\t%a2", operands);
+ output_asm_insn (" nop", NULL);
+ }
+
+ if (operands[2] == got_helper_rtx)
+ got_helper_needed = true;
+
+ return "";
+}
+
+#ifdef HAVE_GAS_HIDDEN
+# define USE_HIDDEN_LINKONCE 1
+#else
+# define USE_HIDDEN_LINKONCE 0
+#endif
+
/* Emit code to load the GOT register. */
void
load_got_register (void)
{
- if (!got_register_rtx)
- got_register_rtx = gen_rtx_REG (Pmode, GLOBAL_OFFSET_TABLE_REGNUM);
+ rtx insn;
if (TARGET_VXWORKS_RTP)
- emit_insn (gen_vxworks_load_got ());
+ {
+ if (!got_register_rtx)
+ got_register_rtx = pic_offset_table_rtx;
+
+ insn = gen_vxworks_load_got ();
+ }
else
{
+ if (!got_register_rtx)
+ got_register_rtx = gen_rtx_REG (Pmode, GLOBAL_OFFSET_TABLE_REGNUM);
+
/* The GOT symbol is subject to a PC-relative relocation so we need a
helper function to add the PC value and thus get the final value. */
if (!got_helper_rtx)
{
char name[32];
- get_pc_thunk_name (name, GLOBAL_OFFSET_TABLE_REGNUM);
+
+ /* Skip the leading '%' as that cannot be used in a symbol name. */
+ if (USE_HIDDEN_LINKONCE)
+ sprintf (name, "__sparc_get_pc_thunk.%s",
+ reg_names[REGNO (got_register_rtx)] + 1);
+ else
+ ASM_GENERATE_INTERNAL_LABEL (name, "LADDPC",
+ REGNO (got_register_rtx));
+
got_helper_rtx = gen_rtx_SYMBOL_REF (Pmode, ggc_strdup (name));
}
- emit_insn (gen_load_pcrel_sym (got_register_rtx, sparc_got (),
- got_helper_rtx));
+ insn
+ = gen_load_pcrel_sym (got_register_rtx, sparc_got (), got_helper_rtx);
}
+
+ emit_insn (insn);
}
/* Ensure that we are not using patterns that are not OK with PIC. */
return true;
/* GOT register (%l7) if needed. */
- if (regno == GLOBAL_OFFSET_TABLE_REGNUM && got_register_rtx)
+ if (got_register_rtx && regno == REGNO (got_register_rtx))
return true;
/* If the function accesses prior frames, the frame pointer and the return
sparc_file_end (void)
{
/* If we need to emit the special GOT helper function, do so now. */
- if (got_helper_rtx)
+ if (got_helper_needed)
{
const char *name = XSTR (got_helper_rtx, 0);
- const char *reg_name = reg_names[GLOBAL_OFFSET_TABLE_REGNUM];
#ifdef DWARF2_UNWIND_INFO
bool do_cfi;
#endif
#ifdef DWARF2_UNWIND_INFO
do_cfi = dwarf2out_do_cfi_asm ();
if (do_cfi)
- fprintf (asm_out_file, "\t.cfi_startproc\n");
+ output_asm_insn (".cfi_startproc", NULL);
#endif
if (flag_delayed_branch)
- fprintf (asm_out_file, "\tjmp\t%%o7+8\n\t add\t%%o7, %s, %s\n",
- reg_name, reg_name);
+ {
+ output_asm_insn ("jmp\t%%o7+8", NULL);
+ output_asm_insn (" add\t%%o7, %0, %0", &got_register_rtx);
+ }
else
- fprintf (asm_out_file, "\tadd\t%%o7, %s, %s\n\tjmp\t%%o7+8\n\t nop\n",
- reg_name, reg_name);
+ {
+ output_asm_insn ("add\t%%o7, %0, %0", &got_register_rtx);
+ output_asm_insn ("jmp\t%%o7+8", NULL);
+ output_asm_insn (" nop", NULL);
+ }
#ifdef DWARF2_UNWIND_INFO
if (do_cfi)
- fprintf (asm_out_file, "\t.cfi_endproc\n");
+ output_asm_insn (".cfi_endproc", NULL);
#endif
}
edge entry_edge;
rtx_insn *seq;
- if (!crtl->uses_pic_offset_table)
+ /* In PIC mode, we need to always initialize the PIC register if optimization
+ is enabled, because we are called from IRA and LRA may later force things
+ to the constant pool for optimization purposes. */
+ if (!flag_pic || (!crtl->uses_pic_offset_table && !optimize))
return;
start_sequence ();
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