Hi!
On Fri, Feb 09, 2018 at 09:37:28AM +0000, Nick Clifton wrote:
> > I thought you were going to do a patch like the following, to make the
> > e500 cores less special (they are not):
>
> Sorry - my bad. I defer to your patch then. Whatever it takes to get
> the BZ fixed and off the books... :-)
So does it work? :-) (I cannot reproduce the problem, there must be
something in your configuration I'm overlooking).
Segher
[ Here it is again, with changelog this time: ]
>From 44c3b661ef75e57415b10ca2cec5ac6427bbed8f Mon Sep 17 00:00:00 2001
Message-Id:
<44c3b661ef75e57415b10ca2cec5ac6427bbed8f.1518109128.git.seg...@kernel.crashing.org>
From: Segher Boessenkool <seg...@kernel.crashing.org>
Date: Thu, 8 Feb 2018 16:58:33 +0000
Subject: [PATCH] Do not mess with rs6000_{single,double}_float (PR68028)
For e500 family cores we do some questionable things with those flags,
which does not work with LTO. So don't.
2018-02-10 Segher Boessenkool <seg...@kernel.crashing.org>
* config/rs6000/rs6000.c (rs6000_option_override_internal): Don't
handle rs6000_single_float and rs6000_double_float specially for
e500 family CPUs.
---
gcc/config/rs6000/rs6000.c | 19 -------------------
1 file changed, 19 deletions(-)
diff --git a/gcc/config/rs6000/rs6000.c b/gcc/config/rs6000/rs6000.c
index 5adccd2..73de617 100644
--- a/gcc/config/rs6000/rs6000.c
+++ b/gcc/config/rs6000/rs6000.c
@@ -4809,25 +4809,6 @@ rs6000_option_override_internal (bool global_init_p)
if (TARGET_DEBUG_REG || TARGET_DEBUG_TARGET)
rs6000_print_isa_options (stderr, 0, "after subtarget", rs6000_isa_flags);
- /* For the E500 family of cores, reset the single/double FP flags to let us
- check that they remain constant across attributes or pragmas. */
-
- switch (rs6000_cpu)
- {
- case PROCESSOR_PPC8540:
- case PROCESSOR_PPC8548:
- case PROCESSOR_PPCE500MC:
- case PROCESSOR_PPCE500MC64:
- case PROCESSOR_PPCE5500:
- case PROCESSOR_PPCE6500:
- rs6000_single_float = 0;
- rs6000_double_float = 0;
- break;
-
- default:
- break;
- }
-
if (main_target_opt)
{
if (main_target_opt->x_rs6000_single_float != rs6000_single_float)
--
1.8.3.1
