From: Götz Lindenmaier <goetz@ipd.info.uni-karlsruhe.de>
Date: Fri, 28 Mar 2003 09:31:25 +0000 (+0000)
Subject: *** empty log message ***
X-Git-Url: http://nsz.repo.hu/git/?a=commitdiff_plain;h=4d2013dc57776f3d97a74801c3d29eed7ed76a82;p=libfirm

*** empty log message ***

[r1004]
---

diff --git a/TODO b/TODO
index 8dade4735..d462dc73a 100644
--- a/TODO
+++ b/TODO
@@ -1,3 +1,27 @@
+  * 24.3.2003 Goetz
+    tarval requirements:
+    zu register_mode:
+    Ich haette ganz gerne
+      new_ir_mode(ident* name, int size, int alignment, mode_sort sort);
+    modecode ist der naechste frei int > maxenum.
+    Und der konstruktor sollte auch nach den zwei inits aufgerufen werden koennen.
+    was spricht dagegen?  (die zwei inits stehen in init_firm(), ein benutzer kann
+    schwer dazwischen andere methoden aufrufen.)
+
+  * 24.3.2003 Goetz
+    tarval requirements:
+    - if overflow either return no tarval or return result of overflow
+      computation.  Offer to output a warning. (configurable)
+    - Div:  configure rounding (up/down) in init_firm, remark in each Div node
+      rounding sheme, default by initializations, pass rounding sheme
+      to tarval module
+    - impelement tarval_bitpattern
+    - make routine that outputs parts < 32 bits from any tarval
+      at given position in a C type that is exactly 32 bits.
+      For this test C types for their size or use int32 in integer.h
+      (is this standard C??)
+    - add routine that outputs the position of the largest set bit.
+
   * 29.10.2002 Goetz
     Representation of value compounds is not good, especially with
     calls.
diff --git a/ir/tv/tv.h b/ir/tv/tv.h
index e33bd3c4d..321739bb8 100644
--- a/ir/tv/tv.h
+++ b/ir/tv/tv.h
@@ -483,6 +483,11 @@ tarval *tarval_rot(tarval *a, tarval *b);  /* bitwise rotation */
  ******/
 char *tarval_bitpattern(tarval *tv);
 
+/**
+ * returns bitpattern [from, to[
+ */
+char *tarval_sub_bitpattern(tarval *tv, int from, int to);
+
 /* Identifying some tarvals ??? */
 /* This function is deprecated and its use strongly discouraged */
 long tarval_classify(tarval *tv);