* flow.c (mark_set_1): Respect not_dead when updating reg_live.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@33736 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index ad5ebc5..a249777 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -3,6 +3,8 @@
        * flow.c (split_edge): Don't allocate global_live_at_start for
        the new block unless the old blocks had them as well.
 
+       * flow.c (mark_set_1): Respect not_dead when updating reg_live.
+
 2000-05-06  Zack Weinberg  <zack@wolery.cumb.org>
 
        * cpphash.h: Remove conditional #define of __extension__.

diff --git a/gcc/flow.c b/gcc/flow.c
index fa4e11a..2adad8c 100644 (file)
--- a/gcc/flow.c
+++ b/gcc/flow.c
@@ -4373,6 +4373,7 @@ mark_set_1 (pbi, code, reg, cond, insn, flags)
 
       /* Mark the register as being dead.  */
       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