[X86][PKU] add clang intrinsic for {RD|WR}PKRU

Differential Revision: http://reviews.llvm.org/D15837

llvm-svn: 256672

clang/include/clang/Basic/BuiltinsX86.def

@@ -917,6 +917,9 @@ TARGET_BUILTIN(__builtin_ia32_xtest, "i", "", "rtm")
 BUILTIN(__builtin_ia32_rdpmc, "ULLii", "")
 BUILTIN(__builtin_ia32_rdtsc, "ULLi", "")
 BUILTIN(__builtin_ia32_rdtscp, "ULLiUi*", "")
+// PKU
+TARGET_BUILTIN(__builtin_ia32_rdpkru, "Ui", "", "pku")
+TARGET_BUILTIN(__builtin_ia32_wrpkru, "vUi", "", "pku")
 
 // AVX-512
 TARGET_BUILTIN(__builtin_ia32_sqrtpd512_mask, "V8dV8dV8dUcIi", "", "avx512f")

clang/include/clang/Driver/Options.td

@@ -1369,6 +1369,7 @@ def mno_xsave : Flag<["-"], "mno-xsave">, Group<m_x86_Features_Group>;
 def mno_xsaveopt : Flag<["-"], "mno-xsaveopt">, Group<m_x86_Features_Group>;
 def mno_xsavec : Flag<["-"], "mno-xsavec">, Group<m_x86_Features_Group>;
 def mno_xsaves : Flag<["-"], "mno-xsaves">, Group<m_x86_Features_Group>;
+def mno_pku : Flag<["-"], "mno-pku">, Group<m_x86_Features_Group>;
 
 def munaligned_access : Flag<["-"], "munaligned-access">, Group<m_arm_Features_Group>,
   HelpText<"Allow memory accesses to be unaligned (AArch32/AArch64 only)">;
@@ -1520,6 +1521,7 @@ def mf16c : Flag<["-"], "mf16c">, Group<m_x86_Features_Group>;
 def mrtm : Flag<["-"], "mrtm">, Group<m_x86_Features_Group>;
 def mprfchw : Flag<["-"], "mprfchw">, Group<m_x86_Features_Group>;
 def mrdseed : Flag<["-"], "mrdseed">, Group<m_x86_Features_Group>;
+def mpku : Flag<["-"], "mpku">, Group<m_x86_Features_Group>;
 def madx : Flag<["-"], "madx">, Group<m_x86_Features_Group>;
 def msha : Flag<["-"], "msha">, Group<m_x86_Features_Group>;
 def mcx16 : Flag<["-"], "mcx16">, Group<m_x86_Features_Group>;

clang/lib/Basic/Targets.cpp

@@ -2095,6 +2095,7 @@ class X86TargetInfo : public TargetInfo {
   bool HasXSAVEOPT = false;
   bool HasXSAVEC = false;
   bool HasXSAVES = false;
+  bool HasPKU = false;
 
   /// \brief Enumeration of all of the X86 CPUs supported by Clang.
   ///
@@ -2596,6 +2597,7 @@ bool X86TargetInfo::initFeatureMap(
     setFeatureEnabledImpl(Features, "avx512vl", true);
     setFeatureEnabledImpl(Features, "xsavec", true);
     setFeatureEnabledImpl(Features, "xsaves", true);
+    setFeatureEnabledImpl(Features, "pku", true);
     // FALLTHROUGH
   case CK_Broadwell:
     setFeatureEnabledImpl(Features, "rdseed", true);
@@ -3021,6 +3023,8 @@ bool X86TargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
       HasXSAVEC = true;
     } else if (Feature == "+xsaves") {
       HasXSAVES = true;
+    } else if (Feature == "+pku") {
+      HasPKU = true;
     }
 
     X86SSEEnum Level = llvm::StringSwitch<X86SSEEnum>(Feature)
@@ -3322,7 +3326,8 @@ void X86TargetInfo::getTargetDefines(const LangOptions &Opts,
     Builder.defineMacro("__XSAVEC__");
   if (HasXSAVES)
     Builder.defineMacro("__XSAVES__");
-
+  if (HasPKU)
+    Builder.defineMacro("__PKU__");
   if (HasCX16)
     Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16");
 
@@ -3440,6 +3445,7 @@ bool X86TargetInfo::hasFeature(StringRef Feature) const {
       .Case("xsavec", HasXSAVEC)
       .Case("xsaves", HasXSAVES)
       .Case("xsaveopt", HasXSAVEOPT)
+      .Case("pku", HasPKU)
       .Default(false);
 }
 

clang/lib/Headers/CMakeLists.txt

@@ -12,6 +12,7 @@ set(files
   avx512vlintrin.h
   avx512dqintrin.h
   avx512vldqintrin.h
+  pkuintrin.h
   avxintrin.h
   bmi2intrin.h
   bmiintrin.h

clang/lib/Headers/immintrin.h

@@ -79,6 +79,8 @@ _mm256_cvtph_ps(__m128i __a)
 
 #include <avx512erintrin.h>
 
+#include <pkuintrin.h>
+
 static __inline__ int __attribute__((__always_inline__, __nodebug__, __target__("rdrnd")))
 _rdrand16_step(unsigned short *__p)
 {

clang/lib/Headers/pkuintrin.h

@@ -0,0 +1,48 @@
+/*===------------- pkuintrin.h - PKU 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 __IMMINTRIN_H
+#error "Never use <pkuintrin.h> directly; include <immintrin.h> instead."
+#endif
+
+#ifndef __PKUINTRIN_H
+#define __PKUINTRIN_H
+
+/* Define the default attributes for the functions in this file. */
+#define __DEFAULT_FN_ATTRS __attribute__((__always_inline__, __nodebug__, __target__("pku")))
+
+static __inline__ unsigned int __DEFAULT_FN_ATTRS
+_rdpkru_u32(void)
+{
+  return __builtin_ia32_rdpkru();
+}
+
+static __inline__ void __DEFAULT_FN_ATTRS
+_wrpkru(unsigned int val)
+{
+  return __builtin_ia32_wrpkru(val);
+}
+
+#undef __DEFAULT_FN_ATTRS
+
+#endif

clang/test/CodeGen/pku.c

@@ -0,0 +1,18 @@
+// RUN: %clang_cc1 %s -triple=x86_64-apple-darwin -target-feature +pku -emit-llvm -o - -Werror | FileCheck %s
+
+// Don't include mm_malloc.h, it's system specific.
+#define __MM_MALLOC_H
+
+#include <immintrin.h>
+
+unsigned int test_rdpkru_u32() {
+  // CHECK-LABEL: @test_rdpkru_u32
+  // CHECK: @llvm.x86.rdpkru
+  return _rdpkru_u32(); 
+}
+void test_wrpkru(unsigned int __A) {
+  // CHECK-LABEL: @test_wrpkru
+  // CHECK: @llvm.x86.wrpkru
+  _wrpkru(__A);
+  return ;
+}