diff --git a/clang/include/clang/Basic/LangStandards.def b/clang/include/clang/Basic/LangStandards.def
--- a/clang/include/clang/Basic/LangStandards.def
+++ b/clang/include/clang/Basic/LangStandards.def
@@ -167,6 +167,9 @@
 LANGSTANDARD(opencl20, "cl2.0",
              OpenCL, "OpenCL 2.0",
              LineComment | C99 | Digraphs | HexFloat | OpenCL)
+LANGSTANDARD(opencl30, "cl3.0",
+             OpenCL, "OpenCL 3.0",
+             LineComment | C99 | Digraphs | HexFloat | OpenCL)
 LANGSTANDARD(openclcpp, "clc++",
              OpenCL, "C++ for OpenCL",
              LineComment | CPlusPlus | CPlusPlus11 | CPlusPlus14 | CPlusPlus17 |
@@ -176,6 +179,7 @@
 LANGSTANDARD_ALIAS_DEPR(opencl11, "CL1.1")
 LANGSTANDARD_ALIAS_DEPR(opencl12, "CL1.2")
 LANGSTANDARD_ALIAS_DEPR(opencl20, "CL2.0")
+LANGSTANDARD_ALIAS_DEPR(opencl30, "CL3.0")
 LANGSTANDARD_ALIAS_DEPR(openclcpp, "CLC++")
 
 // CUDA
diff --git a/clang/include/clang/Driver/Options.td b/clang/include/clang/Driver/Options.td
--- a/clang/include/clang/Driver/Options.td
+++ b/clang/include/clang/Driver/Options.td
@@ -573,7 +573,7 @@
 def cl_no_signed_zeros : Flag<["-"], "cl-no-signed-zeros">, Group<opencl_Group>, Flags<[CC1Option]>,
   HelpText<"OpenCL only. Allow use of less precise no signed zeros computations in the generated binary.">;
 def cl_std_EQ : Joined<["-"], "cl-std=">, Group<opencl_Group>, Flags<[CC1Option]>,
-  HelpText<"OpenCL language standard to compile for.">, Values<"cl,CL,cl1.1,CL1.1,cl1.2,CL1.2,cl2.0,CL2.0,clc++,CLC++">;
+  HelpText<"OpenCL language standard to compile for.">, Values<"cl,CL,cl1.1,CL1.1,cl1.2,CL1.2,cl2.0,CL2.0,cl3.0,CL3.0,clc++,CLC++">;
 def cl_denorms_are_zero : Flag<["-"], "cl-denorms-are-zero">, Group<opencl_Group>,
   HelpText<"OpenCL only. Allow denormals to be flushed to zero.">;
 def cl_fp32_correctly_rounded_divide_sqrt : Flag<["-"], "cl-fp32-correctly-rounded-divide-sqrt">, Group<opencl_Group>, Flags<[CC1Option]>,
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -2368,6 +2368,8 @@
     Opts.OpenCLVersion = 120;
   else if (LangStd == LangStandard::lang_opencl20)
     Opts.OpenCLVersion = 200;
+  else if (LangStd == LangStandard::lang_opencl30)
+    Opts.OpenCLVersion = 300;
   else if (LangStd == LangStandard::lang_openclcpp)
     Opts.OpenCLCPlusPlusVersion = 100;
 
@@ -2574,6 +2576,7 @@
         .Cases("cl1.1", "CL1.1", LangStandard::lang_opencl11)
         .Cases("cl1.2", "CL1.2", LangStandard::lang_opencl12)
         .Cases("cl2.0", "CL2.0", LangStandard::lang_opencl20)
+        .Cases("cl3.0", "CL3.0", LangStandard::lang_opencl30)
         .Cases("clc++", "CLC++", LangStandard::lang_openclcpp)
         .Default(LangStandard::lang_unspecified);
 
diff --git a/clang/lib/Frontend/InitPreprocessor.cpp b/clang/lib/Frontend/InitPreprocessor.cpp
--- a/clang/lib/Frontend/InitPreprocessor.cpp
+++ b/clang/lib/Frontend/InitPreprocessor.cpp
@@ -445,6 +445,9 @@
       case 200:
         Builder.defineMacro("__OPENCL_C_VERSION__", "200");
         break;
+      case 300:
+        Builder.defineMacro("__OPENCL_C_VERSION__", "300");
+        break;
       default:
         llvm_unreachable("Unsupported OpenCL version");
       }
@@ -453,6 +456,7 @@
     Builder.defineMacro("CL_VERSION_1_1", "110");
     Builder.defineMacro("CL_VERSION_1_2", "120");
     Builder.defineMacro("CL_VERSION_2_0", "200");
+    Builder.defineMacro("CL_VERSION_3_0", "300");
 
     if (TI.isLittleEndian())
       Builder.defineMacro("__ENDIAN_LITTLE__");
diff --git a/clang/test/Driver/autocomplete.c b/clang/test/Driver/autocomplete.c
--- a/clang/test/Driver/autocomplete.c
+++ b/clang/test/Driver/autocomplete.c
@@ -43,6 +43,8 @@
 // CLSTDALL-NEXT: CL1.2
 // CLSTDALL-NEXT: cl2.0
 // CLSTDALL-NEXT: CL2.0
+// CLSTDALL-NEXT: cl3.0
+// CLSTDALL-NEXT: CL3.0
 // CLSTDALL-NEXT: clc++
 // CLSTDALL-NEXT: CLC++
 // RUN: %clang --autocomplete=-fno-sanitize-coverage=,f | FileCheck %s -check-prefix=FNOSANICOVER
diff --git a/clang/test/Driver/opencl.cl b/clang/test/Driver/opencl.cl
--- a/clang/test/Driver/opencl.cl
+++ b/clang/test/Driver/opencl.cl
@@ -2,6 +2,7 @@
 // RUN: %clang -S -### -cl-std=CL1.1 %s 2>&1 | FileCheck --check-prefix=CHECK-CL11 %s
 // RUN: %clang -S -### -cl-std=CL1.2 %s 2>&1 | FileCheck --check-prefix=CHECK-CL12 %s
 // RUN: %clang -S -### -cl-std=CL2.0 %s 2>&1 | FileCheck --check-prefix=CHECK-CL20 %s
+// RUN: %clang -S -### -cl-std=CL3.0 %s 2>&1 | FileCheck --check-prefix=CHECK-CL30 %s
 // RUN: %clang -S -### -cl-std=clc++ %s 2>&1 | FileCheck --check-prefix=CHECK-CLCPP %s
 // RUN: %clang -S -### -cl-opt-disable %s 2>&1 | FileCheck --check-prefix=CHECK-OPT-DISABLE %s
 // RUN: %clang -S -### -cl-strict-aliasing %s 2>&1 | FileCheck --check-prefix=CHECK-STRICT-ALIASING %s
@@ -22,6 +23,7 @@
 // CHECK-CL11: "-cc1" {{.*}} "-cl-std=CL1.1"
 // CHECK-CL12: "-cc1" {{.*}} "-cl-std=CL1.2"
 // CHECK-CL20: "-cc1" {{.*}} "-cl-std=CL2.0"
+// CHECK-CL30: "-cc1" {{.*}} "-cl-std=CL3.0"
 // CHECK-CLCPP: "-cc1" {{.*}} "-cl-std=clc++"
 // CHECK-OPT-DISABLE: "-cc1" {{.*}} "-cl-opt-disable"
 // CHECK-STRICT-ALIASING: "-cc1" {{.*}} "-cl-strict-aliasing"
diff --git a/clang/test/Driver/unknown-std.cl b/clang/test/Driver/unknown-std.cl
--- a/clang/test/Driver/unknown-std.cl
+++ b/clang/test/Driver/unknown-std.cl
@@ -10,6 +10,7 @@
 // CHECK-NEXT: note: use 'cl1.1' for 'OpenCL 1.1' standard
 // CHECK-NEXT: note: use 'cl1.2' for 'OpenCL 1.2' standard
 // CHECK-NEXT: note: use 'cl2.0' for 'OpenCL 2.0' standard
+// CHECK-NEXT: note: use 'cl3.0' for 'OpenCL 3.0' standard
 // CHECK-NEXT: note: use 'clc++' for 'C++ for OpenCL' standard
 
 // Make sure that no other output is present.
diff --git a/clang/test/Frontend/stdlang.c b/clang/test/Frontend/stdlang.c
--- a/clang/test/Frontend/stdlang.c
+++ b/clang/test/Frontend/stdlang.c
@@ -4,11 +4,13 @@
 // RUN: %clang_cc1 -x cl -cl-std=cl1.1 -DOPENCL %s
 // RUN: %clang_cc1 -x cl -cl-std=cl1.2 -DOPENCL %s
 // RUN: %clang_cc1 -x cl -cl-std=cl2.0 -DOPENCL %s
+// RUN: %clang_cc1 -x cl -cl-std=cl3.0 -DOPENCL %s
 // RUN: %clang_cc1 -x cl -cl-std=clc++ -DOPENCL %s
 // RUN: %clang_cc1 -x cl -cl-std=CL -DOPENCL %s
 // RUN: %clang_cc1 -x cl -cl-std=CL1.1 -DOPENCL %s
 // RUN: %clang_cc1 -x cl -cl-std=CL1.2 -DOPENCL %s
 // RUN: %clang_cc1 -x cl -cl-std=CL2.0 -DOPENCL %s
+// RUN: %clang_cc1 -x cl -cl-std=CL3.0 -DOPENCL %s
 // RUN: %clang_cc1 -x cl -cl-std=CLC++ -DOPENCL %s
 // RUN: not %clang_cc1 -x cl -std=c99 -DOPENCL %s 2>&1 | FileCheck --check-prefix=CHECK-C99 %s
 // RUN: not %clang_cc1 -x cl -cl-std=invalid -DOPENCL %s 2>&1 | FileCheck --check-prefix=CHECK-INVALID %s
diff --git a/clang/test/Preprocessor/predefined-macros.c b/clang/test/Preprocessor/predefined-macros.c
--- a/clang/test/Preprocessor/predefined-macros.c
+++ b/clang/test/Preprocessor/predefined-macros.c
@@ -129,6 +129,8 @@
 // RUN:   | FileCheck -match-full-lines %s --check-prefix=CHECK-CL12
 // RUN: %clang_cc1 %s -E -dM -o - -x cl -cl-std=CL2.0 \
 // RUN:   | FileCheck -match-full-lines %s --check-prefix=CHECK-CL20
+// RUN: %clang_cc1 %s -E -dM -o - -x cl -cl-std=CL3.0 \
+// RUN:   | FileCheck -match-full-lines %s --check-prefix=CHECK-CL30
 // RUN: %clang_cc1 %s -E -dM -o - -x cl -cl-fast-relaxed-math \
 // RUN:   | FileCheck -match-full-lines %s --check-prefix=CHECK-FRM
 // RUN: %clang_cc1 %s -E -dM -o - -x cl -cl-std=clc++ \
@@ -137,26 +139,37 @@
 // CHECK-CL10: #define CL_VERSION_1_1 110
 // CHECK-CL10: #define CL_VERSION_1_2 120
 // CHECK-CL10: #define CL_VERSION_2_0 200
+// CHECK-CL10: #define CL_VERSION_3_0 300
 // CHECK-CL10: #define __OPENCL_C_VERSION__ 100
 // CHECK-CL10-NOT: #define __FAST_RELAXED_MATH__ 1
 // CHECK-CL11: #define CL_VERSION_1_0 100
 // CHECK-CL11: #define CL_VERSION_1_1 110
 // CHECK-CL11: #define CL_VERSION_1_2 120
 // CHECK-CL11: #define CL_VERSION_2_0 200
+// CHECK-CL11: #define CL_VERSION_3_0 300
 // CHECK-CL11: #define __OPENCL_C_VERSION__ 110
 // CHECK-CL11-NOT: #define __FAST_RELAXED_MATH__ 1
 // CHECK-CL12: #define CL_VERSION_1_0 100
 // CHECK-CL12: #define CL_VERSION_1_1 110
 // CHECK-CL12: #define CL_VERSION_1_2 120
 // CHECK-CL12: #define CL_VERSION_2_0 200
+// CHECK-CL12: #define CL_VERSION_3_0 300
 // CHECK-CL12: #define __OPENCL_C_VERSION__ 120
 // CHECK-CL12-NOT: #define __FAST_RELAXED_MATH__ 1
 // CHECK-CL20: #define CL_VERSION_1_0 100
 // CHECK-CL20: #define CL_VERSION_1_1 110
 // CHECK-CL20: #define CL_VERSION_1_2 120
 // CHECK-CL20: #define CL_VERSION_2_0 200
+// CHECK-CL20: #define CL_VERSION_3_0 300
 // CHECK-CL20: #define __OPENCL_C_VERSION__ 200
 // CHECK-CL20-NOT: #define __FAST_RELAXED_MATH__ 1
+// CHECK-CL30: #define CL_VERSION_1_0 100
+// CHECK-CL30: #define CL_VERSION_1_1 110
+// CHECK-CL30: #define CL_VERSION_1_2 120
+// CHECK-CL30: #define CL_VERSION_2_0 200
+// CHECK-CL30: #define CL_VERSION_3_0 300
+// CHECK-CL30: #define __OPENCL_C_VERSION__ 300
+// CHECK-CL30-NOT: #define __FAST_RELAXED_MATH__ 1
 // CHECK-FRM: #define __FAST_RELAXED_MATH__ 1
 // CHECK-CLCPP10: #define __CL_CPP_VERSION_1_0__ 100
 // CHECK-CLCPP10: #define __OPENCL_CPP_VERSION__ 100