Attachment 35342 Details for Bug 65779 – prototype patch

[patch] prototype patch

pr65779.diff (text/plain), 1.52 KB, created by Alan Modra on 2015-04-17 05:19:50 UTC

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Creator: Alan Modra

Created: 2015-04-17 05:19:50 UTC

Size: 1.52 KB

patch

obsolete

>Index: gcc/shrink-wrap.c
>===================================================================
>--- gcc/shrink-wrap.c	(revision 222160)
>+++ gcc/shrink-wrap.c	(working copy)
>@@ -182,6 +182,19 @@ live_edge_for_reg (basic_block bb, int regno, int
>   return live_edge;
> }
> 
>+bool
>+debug_uses_reg (rtx pat, unsigned int regno)
>+{
>+  subrtx_iterator::array_type array;
>+  FOR_EACH_SUBRTX (iter, array, pat, NONCONST)
>+    {
>+      const_rtx x = *iter;
>+      if (REG_P (x) && REGNO (x) == regno)
>+	return true;
>+    }
>+  return false;
>+}
>+
> /* Try to move INSN from BB to a successor.  Return true on success.
>    USES and DEFS are the set of registers that are used and defined
>    after INSN in BB.  SPLIT_P indicates whether a live edge from BB
>@@ -200,6 +213,7 @@ move_insn_for_shrink_wrap (basic_block bb, rtx_ins
>   unsigned int end_sregno = FIRST_PSEUDO_REGISTER;
>   basic_block next_block;
>   edge live_edge;
>+  rtx_insn *dinsn;
> 
>   /* Look for a simple register assignment.  We don't use single_set here
>      because we can't deal with any CLOBBERs, USEs, or REG_UNUSED secondary
>@@ -427,6 +441,17 @@ move_insn_for_shrink_wrap (basic_block bb, rtx_ins
>     }
> 
>   emit_insn_after (PATTERN (insn), bb_note (bb));
>+  for (dinsn = insn;
>+       dinsn && dinsn != NEXT_INSN (BB_END (bb));
>+       dinsn = NEXT_INSN (dinsn))
>+    {
>+      if (DEBUG_INSN_P (dinsn)
>+	  && (debug_uses_reg (INSN_VAR_LOCATION_LOC (dinsn), dregno)))
>+	{
>+	  INSN_VAR_LOCATION_LOC (dinsn) = gen_rtx_UNKNOWN_VAR_LOC ();
>+	  break;
>+	}
>+    }
>   delete_insn (insn);
>   return true;
> }

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Attachments on bug 65779: 35323 | 35342 | 37389