Disable Subzero IR generation for performance testing.

Makefile.standalone

Index: Makefile.standalone
diff --git a/Makefile.standalone b/Makefile.standalone
index 29fcef942b90d322a5f0137f63f0ae0c43f248f2..b5b29138024114ee427b6d2d9855b4663a30a7ef 100644
--- a/Makefile.standalone
+++ b/Makefile.standalone
@@ -51,10 +51,12 @@ CXX_DEFINES =
 ifdef MINIMAL
   OBJDIR := $(OBJDIR)+Min
   CXX_DEFINES += -DALLOW_TEXT_ASM=0 -DALLOW_DUMP=0 -DALLOW_LLVM_CL=0 \
-                 -DALLOW_LLVM_IR=0 -DALLOW_LLVM_IR_AS_INPUT=0
+                 -DALLOW_LLVM_IR=0 -DALLOW_LLVM_IR_AS_INPUT=0 \
+		 -DALLOW_DISABLE_IR_GEN=0
 else
   CXX_DEFINES += -DALLOW_TEXT_ASM=1 -DALLOW_DUMP=1 -DALLOW_LLVM_CL=1 \
-                 -DALLOW_LLVM_IR=1 -DALLOW_LLVM_IR_AS_INPUT=1
+                 -DALLOW_LLVM_IR=1 -DALLOW_LLVM_IR_AS_INPUT=1 \
+		 -DALLOW_DISABLE_IR_GEN=1
 endif
 
 ifdef NOASSERT