Re: toolchain, was Re: bogl: don't know screen type 1

[mike <localgost@gmail.com>]

Seems im not the only soul feeling the bloat
http://news.cnet.com/8301-13505_3-10358024-16.html

I havent seen any 68k linux benchmarks for this yet
http://cshandley.co.uk/temp/membench/
http://amigaworld.net/modules/newbb/viewtopic.php?topic_id=29569&forum=14

It would be interesting if someone could compare a binary compiled
with gcc 2.95 to 3.33 3.40 and or 4.4 for linux, on various systems
even. To see if the slowdown has any consistency.

-Mike


2009/9/14  <fthain@telegraphics.com.au>:
>
> On Sun, 13 Sep 2009, Maxim Kuvyrkov wrote:
>
>> fthain@telegraphics.com.au wrote:
>>
>> > On Sat, 5 Sep 2009, Maxim Kuvyrkov wrote:
>> >
>> > > Finn Thain wrote: ...
>> > >
>> > > > I understand that the current GCC (4.4) lacks the necessary
>> > > > patches, and 4.5 is still uncooked (and that's a scary prospect).
>> > > > Can someone confirm that this is the necessary patch for 4.4:
>> > > > http://gcc.gnu.org/ml/gcc-patches/2009-05/msg01024.html
>> > > I think GCC 4.4 should be good enough.
>> >
>> > I tried patching 4.4.1 and the patch was rejected. It expects
>> > m68k_legitimize_address() to have been declared and defined, but that
>> > routine isn't in gcc-4.4.
>>
>> m68k.c:m68k_legitimize_address() was macro m68k.h:LEGITIMIZE_ADDRESS(),
>> you need to move the hunk to m68k.h.
>>
>
> Thanks for the tip.
>
> Here's a second cut. This one removes the m68k_tls_symbol_p() routine and
> inlines that logic in the LEGITIMIZE_ADDRESS macro (avoids a reference to
> m68k_tls_symbol_p() from explow.o). The TARGET_HAVE_TLS macro wasn't
> defined in explow.c so I changed it to HAVE_AS_TLS.
>
> It appears to work, but I won't be able to test any binary produced by
> this compiler for a week or so.
>
> Finn
>
>
> --- gcc-m68k-support-for-tls.patch      2009-09-14 15:11:39.893286532 +1000
> +++ gcc-m68k-support-for-tls-backport.patch     2009-09-14 15:11:34.563287784 +1000
> @@ -574,13 +574,7 @@
>
>  enum reg_class regno_reg_class[] =
>  {
> -@@ -143,11 +144,13 @@ static tree m68k_handle_fndecl_attribute
> - static void m68k_compute_frame_layout (void);
> - static bool m68k_save_reg (unsigned int regno, bool interrupt_handler);
> - static bool m68k_ok_for_sibcall_p (tree, tree);
> -+static bool m68k_tls_symbol_p (rtx);
> - static rtx m68k_legitimize_address (rtx, rtx, enum machine_mode);
> - static bool m68k_rtx_costs (rtx, int, int, int *, bool);
> +@@ -146,6 +147,7 @@ static tree m68k_handle_fndecl_attribute
>  #if M68K_HONOR_TARGET_STRICT_ALIGNMENT
>  static bool m68k_return_in_memory (const_tree, const_tree);
>  #endif
> @@ -613,16 +607,6 @@
>        && crtl->uses_pic_offset_table)
>      insn = emit_insn (gen_load_got (pic_offset_table_rtx));
>  }
> -@@ -1431,6 +1441,9 @@ m68k_legitimize_sibcall_address (rtx x)
> - rtx
> - m68k_legitimize_address (rtx x, rtx oldx, enum machine_mode mode)
> - {
> -+  if (m68k_tls_symbol_p (x))
> -+    return m68k_legitimize_tls_address (x);
> -+
> -   if (GET_CODE (x) == PLUS)
> -     {
> -       int ch = (x) != (oldx);
>  @@ -1849,7 +1862,7 @@ m68k_illegitimate_symbolic_constant_p (r
>          && !offset_within_block_p (base, INTVAL (offset)))
>        return true;
> @@ -957,7 +941,7 @@
>        return orig;
>
>        gcc_assert (reg);
> -@@ -2196,13 +2421,257 @@ legitimize_pic_address (rtx orig, enum m
> +@@ -2196,13 +2421,244 @@ legitimize_pic_address (rtx orig, enum m
>                                     base == reg ? 0 : reg);
>
>        if (GET_CODE (orig) == CONST_INT)
> @@ -1164,19 +1148,6 @@
>  +  return orig;
>  +}
>  +
> -+/* Return true if X is a TLS symbol.  */
> -+
> -+static bool
> -+m68k_tls_symbol_p (rtx x)
> -+{
> -+  if (!TARGET_HAVE_TLS)
> -+    return false;
> -+
> -+  if (GET_CODE (x) != SYMBOL_REF)
> -+    return false;
> -+
> -+  return SYMBOL_REF_TLS_MODEL (x) != 0;
> -+}
>  +
>  +/* Helper for m68k_tls_referenced_p.  */
>  +
> @@ -1414,6 +1385,18 @@
>
>  #define REG_OK_FOR_BASE_P(X) \
>    m68k_legitimate_base_reg_p (X, REG_STRICT_P)
> +@@ -777,7 +778,10 @@ __transfer_from_trampoline ()                                     \
> + #define COPY_ONCE(Y) if (!copied) { Y = copy_rtx (Y); copied = ch = 1; }
> + #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN)   \
> + { register int ch = (X) != (OLDX);                                    \
> +-  if (GET_CODE (X) == PLUS)                                           \
> ++  if (HAVE_AS_TLS && (GET_CODE (X) == SYMBOL_REF) &&                  \
> ++      (SYMBOL_REF_TLS_MODEL (X) != 0))                                        \
> ++    m68k_legitimize_tls_address (X);                                  \
> ++  else if (GET_CODE (X) == PLUS)                                      \
> +     { int copied = 0;                                                 \
> +       if (GET_CODE (XEXP (X, 0)) == MULT)                             \
> +       { COPY_ONCE (X); XEXP (X, 0) = force_operand (XEXP (X, 0), 0);} \
>  @@ -974,6 +975,9 @@ do { if (cc_prev_status.flags & CC_IN_68
>    assemble_name ((FILE), (NAME)),             \
>    fprintf ((FILE), ",%u\n", (int)(ROUNDED)))
> --
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