Reorg reg-stack to use the standard CFG.

Co-Authored-By: Richard Henderson <rth@cygnus.com>

From-SVN: r30201

1 files changed, 28 insertions, 0 deletions

diff --git a/gcc/emit-rtl.c b/gcc/emit-rtl.c
index 1918a43..4e45985 100644
--- a/gcc/emit-rtl.c
+++ b/gcc/emit-rtl.c
@@ -50,6 +50,7 @@ Boston, MA 02111-1307, USA.  */
 #include "real.h"
 #include "obstack.h"
 #include "bitmap.h"
+#include "basic-block.h"
 #include "ggc.h"
 
 /* Commonly used modes.  */
@@ -2600,6 +2601,20 @@ emit_insn_before (pattern, before)
   return insn;
 }
 
+/* Similar to emit_insn_before, but update basic block boundaries as well.  */
+
+rtx
+emit_block_insn_before (pattern, before, block)
+     rtx pattern, before;
+     basic_block block;
+{
+  rtx prev = PREV_INSN (before);
+  rtx r = emit_insn_before (pattern, before);
+  if (block && block->head == before)
+    block->head = NEXT_INSN (prev);
+  return r;
+}
+
 /* Make an instruction with body PATTERN and code JUMP_INSN
    and output it before the instruction BEFORE.  */
 
@@ -2742,6 +2757,19 @@ emit_insn_after_with_line_notes (pattern, after, from)
 			  insn);
 }
 
+/* Similar to emit_insn_after, but update basic block boundaries as well.  */
+
+rtx
+emit_block_insn_after (pattern, after, block)
+     rtx pattern, after;
+     basic_block block;
+{
+  rtx r = emit_insn_after (pattern, after);
+  if (block && block->end == after)
+    block->end = r;
+  return r;
+}
+
 /* Make an insn of code JUMP_INSN with body PATTERN
    and output it after the insn AFTER.  */