jump.c (jump_optimize_1): Remove inactive but real insns in jump-to-next-insn optimization.

        * jump.c (jump_optimize_1): Remove inactive but real insns
        in jump-to-next-insn optimization.

From-SVN: r33966

2 files changed, 12 insertions, 0 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 577189f..ba7e67a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,10 @@
 2000-05-17  Richard Henderson  <rth@cygnus.com>
 
+	* jump.c (jump_optimize_1): Remove inactive but real insns
+	in jump-to-next-insn optimization.
+
+2000-05-17  Richard Henderson  <rth@cygnus.com>
+
 	* toplev.c (rest_of_compilation): Don't call optimize_mode_switching
 	unless OPTIMIZE_MODE_SWITCHING.  Conditionally set no_new_pseudos.
 	Don't call recompute_reg_usage if no_new_pseudos is true.
diff --git a/gcc/jump.c b/gcc/jump.c
index 7f42235..bdc1b1a 100644
--- a/gcc/jump.c
+++ b/gcc/jump.c
@@ -390,6 +390,13 @@ jump_optimize_1 (f, cross_jump, noop_moves, after_regscan,
 	    {
 	      next = next_real_insn (JUMP_LABEL (insn));
 	      delete_jump (insn);
+
+	      /* Remove the "inactive" but "real" insns (i.e. uses and
+	         clobbers) in between here and there.  */
+	      temp = insn;
+	      while ((temp = next_real_insn (temp)) != next)
+		delete_insn (temp);
+
 	      changed = 1;
 	      continue;
 	    }