flow.c (mark_set_1): Handle CLOBBERs like SETs if the register is live afterwards.

2005-11-09 Andreas Krebbel <krebbel1@de.ibm.com> * flow.c (mark_set_1): Handle CLOBBERs like SETs if the register is live afterwards. From-SVN: r106686

flow.c (mark_set_1): Handle CLOBBERs like SETs if the register is live afterwards.
2005-11-09 Andreas Krebbel <krebbel1@de.ibm.com> * flow.c (mark_set_1): Handle CLOBBERs like SETs if the register is live afterwards. From-SVN: r106686
7221b4a1 · Andreas Krebbel · Andreas Krebbel · f98ae2ab · 7221b4a1 · 7221b4a1
Commit 7221b4a1 authored Nov 09, 2005 by Andreas Krebbel Committed by Andreas Krebbel Nov 09, 2005
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gcc/ChangeLog
+5 -0

gcc/flow.c
+1 -1

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2005-11-09  Andreas Krebbel  <krebbel1@de.ibm.com>
+
+	* flow.c (mark_set_1): Handle CLOBBERs like SETs if the register
+	is live afterwards.
+
 2005-11-08  Bernd Schmidt  <bernd.schmidt@analog.com>

 	* config/bfin/t-bfin-elf (MULTILIB_OPTIONS, MULTILIB_DEFAULTS,

--- a/gcc/flow.c
+++ b/gcc/flow.c
@@ -2816,7 +2816,7 @@ mark_set_1 (struct propagate_block_info *pbi, enum rtx_code code, rtx reg, rtx c
 	      else
 		SET_REGNO_REG_SET (pbi->local_set, i);
 	    }
-	  if (code != CLOBBER)
+	  if (code != CLOBBER || needed_regno)
 	    SET_REGNO_REG_SET (pbi->new_set, i);

 	  some_was_live |= needed_regno;