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Re: [PATCH PR65161]



On Tue, 24 Feb 2015, Yuri Rumyantsev wrote:

> Hi All!
> 
> Here is a simple patch to not perform instruction reordering for
> selective scheduling since it uses interface of list scheduling
> defined in "sched-int.h".

As I see, the exact problem is that swap_top_of_ready_list accesses HID, so
please use the more specialized patch below instead.

Thanks.
Alexander

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 7f5796a..6eccd54 100644
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -26615,6 +26615,12 @@ swap_top_of_ready_list (rtx_insn **ready, int n_ready)
   dep_t dep;
   int clock1 = -1;
   int clock2 = -1;
+
+  /* The following heuristic inspects h_i_d, but it is not extended for insns
+     created when doing selective scheduling.  */
+  if (sel_sched_p())
+    return false;
+
   #define INSN_TICK(INSN) (HID (INSN)->tick)
 
   if (!TARGET_SILVERMONT && !TARGET_INTEL)


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