disable some illegal blackfin patterns. sext from i32 to i32 can never

match.  Jakob, please take a look when you get a chance.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98931 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/Blackfin/BlackfinInstrInfo.td b/lib/Target/Blackfin/BlackfinInstrInfo.td
index 88ff85f5d4f813c74d32431b54988bf949324052..1d7e190bb7c65299900e68b21531107f119d553b 100644 (file)
--- a/lib/Target/Blackfin/BlackfinInstrInfo.td
+++ b/lib/Target/Blackfin/BlackfinInstrInfo.td
@@ -610,7 +610,7 @@ def MOVE_ncccc : F1<(outs NotCC:$cc), (ins JustCC:$sb),
 
 def MOVECC_zext : F1<(outs D:$dst), (ins JustCC:$cc),
                       "$dst = $cc;",
-                      [(set D:$dst, (zext JustCC:$cc))]>;
+                     [/*(set D:$dst, (zext JustCC:$cc))*/]>;
 
 def MOVENCC_z : F1<(outs D:$dst), (ins NotCC:$cc),
                    "$dst = cc;", []>;
@@ -859,10 +859,10 @@ def : Pat<(BfinCall (i32 tglobaladdr:$dst)),
 def : Pat<(BfinCall (i32 texternalsym:$dst)),
           (CALLa texternalsym:$dst)>;
 
-def : Pat<(sext JustCC:$cc),
-          (NEG (MOVECC_zext JustCC:$cc))>;
-def : Pat<(anyext JustCC:$cc),
-          (MOVECC_zext JustCC:$cc)>;
+//def : Pat<(sext JustCC:$cc),
+//          (NEG (MOVECC_zext JustCC:$cc))>;
+//def : Pat<(anyext JustCC:$cc),
+//          (MOVECC_zext JustCC:$cc)>;
 def : Pat<(i16 (zext JustCC:$cc)),
           (EXTRACT_SUBREG (MOVECC_zext JustCC:$cc), bfin_subreg_lo16)>;
 def : Pat<(i16 (sext JustCC:$cc)),