X-Git-Url: http://wien.tomnetworks.com/gitweb/?a=blobdiff_plain;f=mono%2Fmini%2Fcfold.c;h=940c07ac8d825b9d0bb3886ec37d35b71319ef41;hb=5d97d9b6c91b8000a356f7cafeeb9747db2b3c9f;hp=a4910feb18003f48f13f6d6a994522daf1039c27;hpb=df9c98dda18083ec63171490267e08342621ef45;p=mono.git

diff --git a/mono/mini/cfold.c b/mono/mini/cfold.c
index a4910feb180..940c07ac8d8 100644
--- a/mono/mini/cfold.c
+++ b/mono/mini/cfold.c
@@ -1,5 +1,6 @@
-/*
- * cfold.c: Constant folding support
+/**
+ * \file
+ * Constant folding support
  *
  * Author:
  *   Paolo Molaro (lupus@ximian.com)
@@ -361,6 +362,24 @@ mono_constant_fold_ins (MonoCompile *cfg, MonoInst *ins, MonoInst *arg1, MonoIns
 				return NULL;
 			}
 		}
+		if ((arg1->opcode == OP_PCONST) && (arg2->opcode == OP_PCONST) && ins->next) {
+			MonoInst *next = ins->next;
+
+			if (next->opcode == OP_LCEQ) {
+				gboolean res = arg1->inst_p0 == arg2->inst_p0;
+				if (overwrite) {
+					NULLIFY_INS (ins);
+					next->opcode = OP_ICONST;
+					next->inst_c0 = res;
+					MONO_INST_NULLIFY_SREGS (next);
+				} else {
+					ALLOC_DEST (cfg, dest, ins);
+					dest->opcode = OP_ICONST;
+					dest->inst_c0 = res;
+				}
+				break;
+			}
+		}
 		break;
 	}
 	case OP_FMOVE: