@@ -1057,29 +1057,35 @@ gen_reg_rtx (machine_mode mode)
/* Do not call gen_reg_rtx with uninitialized crtl. */
gcc_assert (crtl->emit.regno_pointer_align_length);
- /* Make sure regno_pointer_align, and regno_reg_rtx are large
- enough to have an element for this pseudo reg number. */
+ int cur_size = crtl->emit.regno_pointer_align_length;
+ if (reg_rtx_no == cur_size)
+ crtl->emit.ensure_regno_capacity (cur_size * 2);
- if (reg_rtx_no == crtl->emit.regno_pointer_align_length)
- {
- int old_size = crtl->emit.regno_pointer_align_length;
- char *tmp;
- rtx *new1;
+ val = gen_raw_REG (mode, reg_rtx_no);
+ regno_reg_rtx[reg_rtx_no++] = val;
+ return val;
+}
+
+/* Make sure m_regno_pointer_align, and regno_reg_rtx are large
+ enough to have elements in the range 0 <= idx < NEW_SIZE. */
+
+void
+emit_status::ensure_regno_capacity (int new_size)
+{
+ if (new_size < regno_pointer_align_length)
+ return;
- tmp = XRESIZEVEC (char, crtl->emit.regno_pointer_align, old_size * 2);
- memset (tmp + old_size, 0, old_size);
- crtl->emit.regno_pointer_align = (unsigned char *) tmp;
+ int old_size = regno_pointer_align_length;
- new1 = GGC_RESIZEVEC (rtx, regno_reg_rtx, old_size * 2);
- memset (new1 + old_size, 0, old_size * sizeof (rtx));
- regno_reg_rtx = new1;
+ char *tmp = XRESIZEVEC (char, regno_pointer_align, new_size);
+ memset (tmp + old_size, 0, new_size - old_size);
+ regno_pointer_align = (unsigned char *) tmp;
- crtl->emit.regno_pointer_align_length = old_size * 2;
- }
+ rtx *new1 = GGC_RESIZEVEC (rtx, regno_reg_rtx, new_size);
+ memset (new1 + old_size, 0, (new_size - old_size) * sizeof (rtx));
+ regno_reg_rtx = new1;
- val = gen_raw_REG (mode, reg_rtx_no);
- regno_reg_rtx[reg_rtx_no++] = val;
- return val;
+ crtl->emit.regno_pointer_align_length = new_size;
}
/* Return TRUE if REG is a PARM_DECL, FALSE otherwise. */
@@ -5667,7 +5673,8 @@ init_emit (void)
crtl->emit.regno_pointer_align
= XCNEWVEC (unsigned char, crtl->emit.regno_pointer_align_length);
- regno_reg_rtx = ggc_vec_alloc<rtx> (crtl->emit.regno_pointer_align_length);
+ regno_reg_rtx =
+ ggc_cleared_vec_alloc<rtx> (crtl->emit.regno_pointer_align_length);
/* Put copies of all the hard registers into regno_reg_rtx. */
memcpy (regno_reg_rtx,
@@ -34,6 +34,8 @@ struct GTY(()) sequence_stack {
};
struct GTY(()) emit_status {
+ void ensure_regno_capacity (int new_size);
+
/* This is reset to LAST_VIRTUAL_REGISTER + 1 at the start of each function.
After rtl generation, it is 1 plus the largest register number used. */
int x_reg_rtx_no;