flow.c (mark_set_1): Don't update conditional life info if the register is not_dead.

* flow.c (mark_set_1): Don't update conditional life info if the register is not_dead. From-SVN: r33749

flow.c (mark_set_1): Don't update conditional life info if the register is not_dead.
* flow.c (mark_set_1): Don't update conditional life info if the register is not_dead. From-SVN: r33749
f0acaf02 · Richard Henderson · Richard Henderson · 179977c1 · f0acaf02 · f0acaf02
Commit f0acaf02 authored May 06, 2000 by Richard Henderson Committed by Richard Henderson May 06, 2000
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gcc/ChangeLog
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gcc/flow.c
+1 -1

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2000-05-06  Richard Henderson  <rth@cygnus.com>
+
+	* flow.c (mark_set_1): Don't update conditional life info
+	if the register is not_dead.
+
 2000-05-06  Zack Weinberg  <zack@wolery.cumb.org>

 	* Makefile.in (STAGESTUFF): Add genrtl.c and genrtl.h.

--- a/gcc/flow.c
+++ b/gcc/flow.c
@@ -4252,7 +4252,7 @@ mark_set_1 (pbi, code, reg, cond, insn, flags)
 #ifdef HAVE_conditional_execution
      /* Consider conditional death in deciding that the register needs
 	 a death note.  */
-      if (some_was_live
+      if (some_was_live && ! not_dead
 	  /* The stack pointer is never dead.  Well, not strictly true,
 	     but it's very difficult to tell from here.  Hopefully
 	     combine_stack_adjustments will fix up the most egregious