Add UBSAN build option and fix undefined behaviour errors.

src/IceTargetKinds.def

Index: src/IceTargetKinds.def
diff --git a/src/IceTargetKinds.def b/src/IceTargetKinds.def
new file mode 100644
index 0000000000000000000000000000000000000000..a17d729710c25224d0ad9a283766b8cae0193953
--- /dev/null
+++ b/src/IceTargetKinds.def
@@ -0,0 +1,135 @@
+//===- subzero/src/IceTargetKinds.def - target kind enumeration -*- C++ -*-===//
+//
+//                        The Subzero Code Generator
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// Some Kind enums leave space for target specific values however this is
+// undefined behaviour.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUBZERO_SRC_ICETARGETKINDS_DEF
+#define SUBZERO_SRC_ICETARGETKINDS_DEF
+
+#define TARGETKINDS_TABLE \
+  X(0)                    \
+  X(1)                    \
+  X(2)                    \
+  X(3)                    \
+  X(4)                    \
+  X(5)                    \
+  X(6)                    \
+  X(7)                    \
+  X(8)                    \
+  X(9)                    \
+  X(10)
+#define TARGETKINDS_TABLE_MAX 10
+
+#define TARGETKINDS_INSTS_TABLE \
+  X(0)                          \
+  X(1)                          \
+  X(2)                          \
+  X(3)                          \
+  X(4)                          \
+  X(5)                          \
+  X(6)                          \
+  X(7)                          \
+  X(8)                          \
+  X(9)                          \
+  X(10)                         \
+  X(11)                         \
+  X(12)                         \
+  X(13)                         \
+  X(14)                         \
+  X(15)                         \
+  X(16)                         \
+  X(17)                         \
+  X(18)                         \
+  X(19)                         \
+  X(20)                         \
+  X(21)                         \
+  X(22)                         \
+  X(23)                         \
+  X(24)                         \
+  X(25)                         \
+  X(26)                         \
+  X(27)                         \
+  X(28)                         \
+  X(29)                         \
+  X(30)                         \
+  X(31)                         \
+  X(32)                         \
+  X(33)                         \
+  X(34)                         \
+  X(35)                         \
+  X(36)                         \
+  X(37)                         \
+  X(38)                         \
+  X(39)                         \
+  X(40)                         \
+  X(41)                         \
+  X(42)                         \
+  X(43)                         \
+  X(44)                         \
+  X(45)                         \
+  X(46)                         \
+  X(47)                         \
+  X(48)                         \
+  X(49)                         \
+  X(50)                         \
+  X(51)                         \
+  X(52)                         \
+  X(53)                         \
+  X(54)                         \
+  X(55)                         \
+  X(56)                         \
+  X(57)                         \
+  X(58)                         \
+  X(59)                         \
+  X(60)                         \
+  X(61)                         \
+  X(62)                         \
+  X(63)                         \
+  X(64)                         \
+  X(65)                         \
+  X(66)                         \
+  X(67)                         \
+  X(68)                         \
+  X(69)                         \
+  X(70)                         \
+  X(71)                         \
+  X(72)                         \
+  X(73)                         \
+  X(74)                         \
+  X(75)                         \
+  X(76)                         \
+  X(77)                         \
+  X(78)                         \
+  X(79)                         \
+  X(80)                         \
+  X(81)                         \
+  X(82)                         \
+  X(83)                         \
+  X(84)                         \
+  X(85)                         \
+  X(86)                         \
+  X(87)                         \
+  X(88)                         \
+  X(89)                         \
+  X(90)                         \
+  X(91)                         \
+  X(92)                         \
+  X(93)                         \
+  X(94)                         \
+  X(95)                         \
+  X(96)                         \
+  X(97)                         \
+  X(98)                         \
+  X(99)                         \
+  X(100)
+
+#endif // SUBZERO_SRC_ICETARGETKINDS_DEF