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diff --git a/include/clang/Basic/X86Target.def b/include/clang/Basic/X86Target.def
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+//===--- X86Target.def - X86 Feature/Processor Database ---------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the X86-specific Features and Processors, as used by
+// the X86 Targets.
+//
+//===----------------------------------------------------------------------===//
+
+
+#ifndef PROC
+#define PROC(ENUM, STRING, IS64BIT)
+#endif
+
+#ifndef PROC_ALIAS
+#define PROC_ALIAS(ENUM, ALIAS)
+#endif
+
+#define PROC_64_BIT true
+#define PROC_32_BIT false
+
+/// \name i386
+/// i386-generation processors.
+//@{
+PROC(i386, "i386", PROC_32_BIT)
+//@}
+
+/// \name i486
+/// i486-generation processors.
+//@{
+PROC(i486, "i486", PROC_32_BIT)
+PROC(WinChipC6, "winchip-c6", PROC_32_BIT)
+PROC(WinChip2, "winchip2", PROC_32_BIT)
+PROC(C3, "c3", PROC_32_BIT)
+//@}
+
+/// \name i586
+/// i586-generation processors, P5 microarchitecture based.
+//@{
+PROC(i586, "i586", PROC_32_BIT)
+PROC(Pentium, "pentium", PROC_32_BIT)
+PROC(PentiumMMX, "pentium-mmx", PROC_32_BIT)
+//@}
+
+/// \name i686
+/// i686-generation processors, P6 / Pentium M microarchitecture based.
+//@{
+PROC(PentiumPro, "pentiumpro", PROC_32_BIT)
+PROC_ALIAS(PentiumPro, "i686")
+PROC(Pentium2, "pentium2", PROC_32_BIT)
+PROC(Pentium3, "pentium3", PROC_32_BIT)
+PROC_ALIAS(Pentium3, "pentium3m")
+PROC(PentiumM, "pentium-m", PROC_32_BIT)
+PROC(C3_2, "c3-2", PROC_32_BIT)
+
+/// This enumerator is a bit odd, as GCC no longer accepts -march=yonah.
+/// Clang however has some logic to support this.
+// FIXME: Warn, deprecate, and potentially remove this.
+PROC(Yonah, "yonah", PROC_32_BIT)
+//@}
+
+/// \name Netburst
+/// Netburst microarchitecture based processors.
+//@{
+PROC(Pentium4, "pentium4", PROC_32_BIT)
+PROC_ALIAS(Pentium4, "pentium4m")
+
+PROC(Prescott, "prescott", PROC_32_BIT)
+PROC(Nocona, "nocona", PROC_64_BIT)
+//@}
+
+/// \name Core
+/// Core microarchitecture based processors.
+//@{
+PROC(Core2, "core2", PROC_64_BIT)
+
+/// This enumerator, like Yonah, is a bit odd. It is another
+/// codename which GCC no longer accepts as an option to -march, but Clang
+/// has some logic for recognizing it.
+// FIXME: Warn, deprecate, and potentially remove this.
+PROC(Penryn, "penryn", PROC_64_BIT)
+//@}
+
+/// \name Atom
+/// Atom processors
+//@{
+PROC(Bonnell, "bonnell", PROC_64_BIT)
+PROC_ALIAS(Bonnell, "atom")
+
+PROC(Silvermont, "silvermont", PROC_64_BIT)
+PROC_ALIAS(Silvermont, "slm")
+
+PROC(Goldmont, "goldmont", PROC_64_BIT)
+//@}
+
+/// \name Nehalem
+/// Nehalem microarchitecture based processors.
+PROC(Nehalem, "nehalem", PROC_64_BIT)
+PROC_ALIAS(Nehalem, "corei7")
+
+/// \name Westmere
+/// Westmere microarchitecture based processors.
+PROC(Westmere, "westmere", PROC_64_BIT)
+
+/// \name Sandy Bridge
+/// Sandy Bridge microarchitecture based processors.
+PROC(SandyBridge, "sandybridge", PROC_64_BIT)
+PROC_ALIAS(SandyBridge, "corei7-avx")
+
+/// \name Ivy Bridge
+/// Ivy Bridge microarchitecture based processors.
+PROC(IvyBridge, "ivybridge", PROC_64_BIT)
+PROC_ALIAS(IvyBridge, "core-avx-i")
+
+/// \name Haswell
+/// Haswell microarchitecture based processors.
+PROC(Haswell, "haswell", PROC_64_BIT)
+PROC_ALIAS(Haswell, "core-avx2")
+
+/// \name Broadwell
+/// Broadwell microarchitecture based processors.
+PROC(Broadwell, "broadwell", PROC_64_BIT)
+
+/// \name Skylake Client
+/// Skylake client microarchitecture based processors.
+PROC(SkylakeClient, "skylake", PROC_64_BIT)
+
+/// \name Skylake Server
+/// Skylake server microarchitecture based processors.
+PROC(SkylakeServer, "skylake-avx512", PROC_64_BIT)
+PROC_ALIAS(SkylakeServer, "skx")
+
+/// \name Cannonlake Client
+/// Cannonlake client microarchitecture based processors.
+PROC(Cannonlake, "cannonlake", PROC_64_BIT)
+
+/// \name Icelake Client
+/// Icelake client microarchitecture based processors.
+PROC(Icelake, "icelake", PROC_64_BIT)
+
+/// \name Knights Landing
+/// Knights Landing processor.
+PROC(KNL, "knl", PROC_64_BIT)
+
+/// \name Knights Mill
+/// Knights Mill processor.
+PROC(KNM, "knm", PROC_64_BIT)
+
+/// \name Lakemont
+/// Lakemont microarchitecture based processors.
+PROC(Lakemont, "lakemont", PROC_32_BIT)
+
+/// \name K6
+/// K6 architecture processors.
+//@{
+PROC(K6, "k6", PROC_32_BIT)
+PROC(K6_2, "k6-2", PROC_32_BIT)
+PROC(K6_3, "k6-3", PROC_32_BIT)
+//@}
+
+/// \name K7
+/// K7 architecture processors.
+//@{
+PROC(Athlon, "athlon", PROC_32_BIT)
+PROC_ALIAS(Athlon, "athlon-tbird")
+
+PROC(AthlonXP, "athlon-xp", PROC_32_BIT)
+PROC_ALIAS(AthlonXP, "athlon-mp")
+PROC_ALIAS(AthlonXP, "athlon-4")
+//@}
+
+/// \name K8
+/// K8 architecture processors.
+//@{
+PROC(K8, "k8", PROC_64_BIT)
+PROC_ALIAS(K8, "athlon64")
+PROC_ALIAS(K8, "athlon-fx")
+PROC_ALIAS(K8, "opteron")
+
+PROC(K8SSE3, "k8-sse3", PROC_64_BIT)
+PROC_ALIAS(K8SSE3, "athlon64-sse3")
+PROC_ALIAS(K8SSE3, "opteron-sse3")
+
+PROC(AMDFAM10, "amdfam10", PROC_64_BIT)
+PROC_ALIAS(AMDFAM10, "barcelona")
+//@}
+
+/// \name Bobcat
+/// Bobcat architecture processors.
+//@{
+PROC(BTVER1, "btver1", PROC_64_BIT)
+PROC(BTVER2, "btver2", PROC_64_BIT)
+//@}
+
+/// \name Bulldozer
+/// Bulldozer architecture processors.
+//@{
+PROC(BDVER1, "bdver1", PROC_64_BIT)
+PROC(BDVER2, "bdver2", PROC_64_BIT)
+PROC(BDVER3, "bdver3", PROC_64_BIT)
+PROC(BDVER4, "bdver4", PROC_64_BIT)
+//@}
+
+/// \name zen
+/// Zen architecture processors.
+//@{
+PROC(ZNVER1, "znver1", PROC_64_BIT)
+//@}
+
+/// This specification is deprecated and will be removed in the future.
+/// Users should prefer K8.
+// FIXME: Warn on this when the CPU is set to it.
+//@{
+PROC(x86_64, "x86-64", PROC_64_BIT)
+//@}
+
+/// \name Geode
+/// Geode processors.
+//@{
+PROC(Geode, "geode", PROC_32_BIT)
+//@}
+
+
+#undef PROC_64_BIT
+#undef PROC_32_BIT
+#undef PROC
+#undef PROC_ALIAS