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sparc.c (sparc_flat_expand_prologue): Use emit_use. 

* config/sparc/sparc.c (sparc_flat_expand_prologue): Use emit_use.
	* config/sparc/sparc.md (UNSPECV_GOTO): Delete.
	(nonlocal_goto_internal): Likewise.
	(nonlocal_goto): Emit a use and an indirect jump directly.

From-SVN: r184116
This commit is contained in:
Eric Botcazou 2012-02-11 00:14:08 +00:00 committed by Eric Botcazou
parent 41da64ed3a
commit 8c92f3e81b
3 changed files with 12 additions and 30 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2012-02-10 Eric Botcazou <ebotcazou@adacore.com>
* config/sparc/sparc.c (sparc_flat_expand_prologue): Use emit_use.
* config/sparc/sparc.md (UNSPECV_GOTO): Delete.
(nonlocal_goto_internal): Likewise.
(nonlocal_goto): Emit a use and an indirect jump directly.
2012-02-10 Andrew MacLeod <amacleod@redhat.com>
PR c/52190

2
gcc/config/sparc/sparc.c
View File

@ -5131,7 +5131,7 @@ sparc_flat_expand_prologue (void)
/* Prevent this instruction from ever being considered dead,
even if this function has no epilogue. */
emit_insn (gen_rtx_USE (VOIDmode, i7));
emit_use (i7);
}
}

33
gcc/config/sparc/sparc.md
View File

@ -99,7 +99,6 @@
(define_constants
[(UNSPECV_BLOCKAGE 0)
(UNSPECV_FLUSHW 1)
(UNSPECV_GOTO 2)
(UNSPECV_FLUSH 4)
(UNSPECV_SAVEW 6)
(UNSPECV_CAS 8)
@ -6524,6 +6523,7 @@
(match_operand 3 "memory_operand" "")]
""
{
rtx i7 = gen_rtx_REG (Pmode, RETURN_ADDR_REGNUM);
rtx r_label = copy_to_reg (operands[1]);
rtx r_sp = adjust_address_nv (operands[2], Pmode, 0);
rtx r_fp = operands[3];
@ -6540,44 +6540,19 @@
/* Restore frame pointer for containing function. */
emit_move_insn (hard_frame_pointer_rtx, r_fp);
emit_stack_restore (SAVE_NONLOCAL, r_sp);
emit_move_insn (i7, r_i7);
/* USE of hard_frame_pointer_rtx added for consistency;
not clear if really needed. */
emit_use (hard_frame_pointer_rtx);
emit_use (stack_pointer_rtx);
emit_use (i7);
/* We need to smuggle the load of %i7 as it is a fixed register. */
emit_jump_insn (gen_nonlocal_goto_internal (r_label, r_i7));
emit_jump_insn (gen_indirect_jump (r_label));
emit_barrier ();
DONE;
})
(define_insn "nonlocal_goto_internal"
[(unspec_volatile [(match_operand 0 "register_operand" "r")
(match_operand 1 "memory_operand" "m")] UNSPECV_GOTO)]
"GET_MODE (operands[0]) == Pmode && GET_MODE (operands[1]) == Pmode"
{
if (flag_delayed_branch)
{
if (TARGET_ARCH64)
return "jmp\t%0\n\t ldx\t%1, %%i7";
else
return "jmp\t%0\n\t ld\t%1, %%i7";
}
else
{
if (TARGET_ARCH64)
return "ldx\t%1, %%i7\n\tjmp\t%0\n\t nop";
else
return "ld\t%1, %%i7\n\tjmp\t%0\n\t nop";
}
}
[(set (attr "type") (const_string "multi"))
(set (attr "length")
(if_then_else (eq_attr "delayed_branch" "true")
(const_int 2)
(const_int 3)))])
(define_expand "builtin_setjmp_receiver"
[(label_ref (match_operand 0 "" ""))]
"flag_pic"