missing file.

svn path=/trunk/mono/; revision=317

diff --git a/mono/interpreter/hacks.h b/mono/interpreter/hacks.h
new file mode 100644 (file)
index 0000000..405f583
--- /dev/null
+++ b/mono/interpreter/hacks.h
@@ -0,0 +1,74 @@
+/*
+ * Attempt at using the goto label construct of GNU GCC:
+ * it turns out this does give some benefit: 5-15% speedup.
+ * Don't look at these macros, it hurts...
+ */
+#define GOTO_LABEL
+#undef GOTO_LABEL
+#ifdef GOTO_LABEL
+
+#define SWITCH(a) goto *goto_map [(a)];
+#define BREAK SWITCH(*ip)
+#define CASE(l)        l ## _LABEL:
+#define DEFAULT        \
+       CEE_ILLEGAL_LABEL:      \
+       CEE_ENDMAC_LABEL:
+#define SUB_SWITCH \
+       CEE_PREFIX1_LABEL: \
+       CEE_ARGLIST_LABEL: \
+       CEE_CEQ_LABEL: \
+       CEE_CGT_LABEL: \
+       CEE_CGT_UN_LABEL: \
+       CEE_CLT_LABEL: \
+       CEE_CLT_UN_LABEL: \
+       CEE_LDFTN_LABEL: \
+       CEE_LDVIRTFTN_LABEL: \
+       CEE_UNUSED56_LABEL: \
+       CEE_LDARG_LABEL: \
+       CEE_LDARGA_LABEL: \
+       CEE_STARG_LABEL: \
+       CEE_LDLOC_LABEL: \
+       CEE_LDLOCA_LABEL: \
+       CEE_STLOC_LABEL: \
+       CEE_LOCALLOC_LABEL: \
+       CEE_UNUSED57_LABEL: \
+       CEE_ENDFILTER_LABEL: \
+       CEE_UNALIGNED__LABEL: \
+       CEE_VOLATILE__LABEL: \
+       CEE_TAIL__LABEL: \
+       CEE_INITOBJ_LABEL: \
+       CEE_UNUSED68_LABEL: \
+       CEE_CPBLK_LABEL: \
+       CEE_INITBLK_LABEL: \
+       CEE_UNUSED69_LABEL: \
+       CEE_RETHROW_LABEL: \
+       CEE_UNUSED_LABEL: \
+       CEE_SIZEOF_LABEL: \
+       CEE_REFANYTYPE_LABEL: \
+       CEE_UNUSED52_LABEL: \
+       CEE_UNUSED53_LABEL: \
+       CEE_UNUSED54_LABEL: \
+       CEE_UNUSED55_LABEL: \
+       CEE_UNUSED70_LABEL:
+#define GOTO_LABEL_VARS \
+       const static void * const goto_map [] = {\
+#define OPDEF(a,b,c,d,e,f,g,h,i,j) \   \
+       && a ## _LABEL, \
+#include "mono/cil/opcode.def" \
+#undef OPDEF   \
+       &&DUMMY_LABEL   \
+       };      \
+       DUMMY_LABEL:
+
+#else
+       
+#define SWITCH(a) switch(a)
+#define BREAK  break
+#define CASE(l)        case l:
+#define DEFAULT        \
+               default:        \
+                       g_error ("Unimplemented opcode: %x at 0x%x\n", *ip, ip-(unsigned char*)mh->header->code);
+#define SUB_SWITCH case 0xFE:
+#define GOTO_LABEL_VARS
+
+#endif