3 files changed, 155 insertions, 0 deletions
diff --git a/lib/Headers/CMakeLists.txt b/lib/Headers/CMakeLists.txt
index 35aff4017e..6091db08a9 100644
--- a/lib/Headers/CMakeLists.txt
+++ b/lib/Headers/CMakeLists.txt
@@ -45,6 +45,7 @@ set(files
   inttypes.h
   iso646.h
   limits.h
+  lwpintrin.h
   lzcntintrin.h
   mm3dnow.h
   mmintrin.h
diff --git a/lib/Headers/lwpintrin.h b/lib/Headers/lwpintrin.h
new file mode 100644
index 0000000000..c95fdd9a20
--- /dev/null
+++ b/lib/Headers/lwpintrin.h
@@ -0,0 +1,150 @@
+/*===---- lwpintrin.h - LWP intrinsics -------------------------------------===
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ *===-----------------------------------------------------------------------===
+ */
+
+#ifndef __X86INTRIN_H
+#error "Never use <lwpintrin.h> directly; include <x86intrin.h> instead."
+#endif
+
+#ifndef __LWPINTRIN_H
+#define __LWPINTRIN_H
+
+/* Define the default attributes for the functions in this file. */
+#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("lwp")))
+
+/// \brief Parses the LWPCB at the specified address and enables
+///        profiling if valid.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the <c> LLWPCB </c> instruction.
+///
+/// \param __addr
+///    Address to the new Lightweight Profiling Control Block (LWPCB). If the
+///    LWPCB is valid, writes the address into the LWP_CBADDR MSR and enables
+///    Lightweight Profiling.
+static __inline__ void __DEFAULT_FN_ATTRS
+__llwpcb (void *__addr)
+{
+  __builtin_ia32_llwpcb(__addr);
+}
+
+/// \brief Flushes the LWP state to memory and returns the address of the LWPCB.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the <c> SLWPCB </c> instruction.
+///
+/// \return
+///    Address to the current Lightweight Profiling Control Block (LWPCB).
+///    If LWP is not currently enabled, returns NULL.
+static __inline__ void* __DEFAULT_FN_ATTRS
+__slwpcb ()
+{
+  return __builtin_ia32_slwpcb();
+}
+
+/// \brief Inserts programmed event record into the LWP event ring buffer
+///        and advances the ring buffer pointer.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the <c> LWPINS </c> instruction.
+///
+/// \param DATA2
+///    A 32-bit value is zero-extended and inserted into the 64-bit Data2 field.
+/// \param DATA1
+///    A 32-bit value is inserted into the 32-bit Data1 field.
+/// \param FLAGS
+///    A 32-bit immediate value is inserted into the 32-bit Flags field.
+/// \returns If the ring buffer is full and LWP is running in Synchronized Mode,
+///    the event record overwrites the last record in the buffer, the MissedEvents
+///    counter in the LWPCB is incremented, the head pointer is not advanced, and
+///    1 is returned. Otherwise 0 is returned.
+#define __lwpins32(DATA2, DATA1, FLAGS) \
+  (__builtin_ia32_lwpins32((unsigned int) (DATA2), (unsigned int) (DATA1), \
+                           (unsigned int) (FLAGS)))
+
+/// \brief Decrements the LWP programmed value sample event counter. If the result is 
+///        negative, inserts an event record into the LWP event ring buffer in memory
+///        and advances the ring buffer pointer.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the <c> LWPVAL </c> instruction.
+///
+/// \param DATA2
+///    A 32-bit value is zero-extended and inserted into the 64-bit Data2 field.
+/// \param DATA1
+///    A 32-bit value is inserted into the 32-bit Data1 field.
+/// \param FLAGS
+///    A 32-bit immediate value is inserted into the 32-bit Flags field.
+#define __lwpval32(DATA2, DATA1, FLAGS) \
+  (__builtin_ia32_lwpval32((unsigned int) (DATA2), (unsigned int) (DATA1), \
+                           (unsigned int) (FLAGS)))
+
+#ifdef __x86_64__
+
+/// \brief Inserts programmed event record into the LWP event ring buffer
+///        and advances the ring buffer pointer.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the <c> LWPINS </c> instruction.
+///
+/// \param DATA2
+///    A 64-bit value is inserted into the 64-bit Data2 field.
+/// \param DATA1
+///    A 32-bit value is inserted into the 32-bit Data1 field.
+/// \param FLAGS
+///    A 32-bit immediate value is inserted into the 32-bit Flags field.
+/// \returns If the ring buffer is full and LWP is running in Synchronized Mode,
+///    the event record overwrites the last record in the buffer, the MissedEvents
+///    counter in the LWPCB is incremented, the head pointer is not advanced, and
+///    1 is returned. Otherwise 0 is returned.
+#define __lwpins64(DATA2, DATA1, FLAGS) \
+  (__builtin_ia32_lwpins64((unsigned long long) (DATA2), (unsigned int) (DATA1), \
+                           (unsigned int) (FLAGS)))
+
+/// \brief Decrements the LWP programmed value sample event counter. If the result is 
+///        negative, inserts an event record into the LWP event ring buffer in memory
+///        and advances the ring buffer pointer.
+///
+/// \headerfile <x86intrin.h>
+///
+/// This intrinsic corresponds to the <c> LWPVAL </c> instruction.
+///
+/// \param DATA2
+///    A 64-bit value is and inserted into the 64-bit Data2 field.
+/// \param DATA1
+///    A 32-bit value is inserted into the 32-bit Data1 field.
+/// \param FLAGS
+///    A 32-bit immediate value is inserted into the 32-bit Flags field.
+#define __lwpval64(DATA2, DATA1, FLAGS) \
+  (__builtin_ia32_lwpval64((unsigned long long) (DATA2), (unsigned int) (DATA1), \
+                           (unsigned int) (FLAGS)))
+
+#endif
+
+#undef __DEFAULT_FN_ATTRS
+
+#endif /* __LWPINTRIN_H */
diff --git a/lib/Headers/x86intrin.h b/lib/Headers/x86intrin.h
index 2003029cb5..ef1d02948c 100644
--- a/lib/Headers/x86intrin.h
+++ b/lib/Headers/x86intrin.h
@@ -72,6 +72,10 @@
 #include <tbmintrin.h>
 #endif
 
+#if !defined(_MSC_VER) || __has_feature(modules) || defined(__LWP__)
+#include <lwpintrin.h>
+#endif
+
 #if !defined(_MSC_VER) || __has_feature(modules) || defined(__F16C__)
 #include <f16cintrin.h>
 #endif