(expand_builtin...

(expand_builtin, case BUILT_IN_SETJMP): Set CONST_CALL_P on
NOTE_INSN_SETJMP instead of emitting USE insns for call-saved regs.

From-SVN: r11340

diff --git a/gcc/expr.c b/gcc/expr.c
index 41fc899eb13727978e8656b50a386b001cec5fc9..34209b7c0345d73800d2e153ce8b162d827f05cc 100644 (file)
--- a/gcc/expr.c
+++ b/gcc/expr.c
@@ -8522,7 +8522,7 @@ expand_builtin (exp, target, subtarget, mode, ignore)
 
        emit_queue ();
 
-       emit_note (NULL_PTR, NOTE_INSN_SETJMP);
+       CONST_CALL_P (emit_note (NULL_PTR, NOTE_INSN_SETJMP)) = 1;
        current_function_calls_setjmp = 1;
 
        /* We store the frame pointer and the address of lab1 in the buffer
@@ -8553,16 +8553,9 @@ expand_builtin (exp, target, subtarget, mode, ignore)
        emit_label (lab1);
 
        /* Note that setjmp clobbers FP when we get here, so we have to
-          make sure it's marked as used by this function.  Also,
-          some inner function might use a call-saved register, so we
-          have to set up to save all of them here.  */
+          make sure it's marked as used by this function.   */
        emit_insn (gen_rtx (USE, VOIDmode, hard_frame_pointer_rtx));
 
-       for (i = 0; i < FIRST_PSEUDO_REGISTER; i++)
-         if (! call_used_regs[i])
-           emit_insn (gen_rtx (USE, VOIDmode,
-                               gen_rtx (REG, reg_raw_mode[i], i)));
-
        /* Now put in the code to restore the frame pointer, and argument
           pointer, if needed.  The code below is from expand_end_bindings
           in stmt.c; see detailed documentation there.  */