Merge from 'master' to 'sycl-web' (#1)

  CONFLICT (content): Merge conflict in clang/lib/Sema/SemaSYCL.cpp
  CONFLICT (content): Merge conflict in clang/include/clang/Sema/Sema.h

Author: mlychkov

clang/docs/CommandGuide/clang.rst

@@ -385,7 +385,7 @@ Code Generation Options
     :option:`-Og` Like :option:`-O1`. In future versions, this option might
     disable different optimizations in order to improve debuggability.
 
-    :option:`-O` Equivalent to :option:`-O2`.
+    :option:`-O` Equivalent to :option:`-O1`.
 
     :option:`-O4` and higher
 

clang/include/clang/Basic/Diagnostic.td

@@ -45,6 +45,7 @@ class TextSubstitution<string Text> {
   // diagnostics
   string Component = "";
   string CategoryName = "";
+  bit Deferrable = 0;
 }
 
 // Diagnostic Categories.  These can be applied to groups or individual
@@ -83,6 +84,7 @@ class Diagnostic<string text, DiagClass DC, Severity defaultmapping> {
   bit            AccessControl = 0;
   bit            WarningNoWerror = 0;
   bit            ShowInSystemHeader = 0;
+  bit            Deferrable = 0;
   Severity       DefaultSeverity = defaultmapping;
   DiagGroup      Group;
   string         CategoryName = "";
@@ -106,6 +108,14 @@ class SuppressInSystemHeader {
   bit ShowInSystemHeader = 0;
 }
 
+class Deferrable {
+  bit Deferrable = 1;
+}
+
+class NonDeferrable {
+  bit Deferrable = 0;
+}
+
 // FIXME: ExtWarn and Extension should also be SFINAEFailure by default.
 class Error<string str>     : Diagnostic<str, CLASS_ERROR, SEV_Error>, SFINAEFailure {
   bit ShowInSystemHeader = 1;

clang/include/clang/Basic/DiagnosticAST.h

@@ -15,7 +15,7 @@ namespace clang {
 namespace diag {
 enum {
 #define DIAG(ENUM, FLAGS, DEFAULT_MAPPING, DESC, GROUP, SFINAE, NOWERROR,      \
-             SHOWINSYSHEADER, CATEGORY)                                        \
+             SHOWINSYSHEADER, DEFERRABLE, CATEGORY)                            \
   ENUM,
 #define ASTSTART
 #include "clang/Basic/DiagnosticASTKinds.inc"

clang/include/clang/Basic/DiagnosticAnalysis.h

@@ -15,7 +15,7 @@ namespace clang {
 namespace diag {
 enum {
 #define DIAG(ENUM, FLAGS, DEFAULT_MAPPING, DESC, GROUP, SFINAE, NOWERROR,      \
-             SHOWINSYSHEADER, CATEGORY)                                        \
+             SHOWINSYSHEADER, DEFERRABLE, CATEGORY)                            \
   ENUM,
 #define ANALYSISSTART
 #include "clang/Basic/DiagnosticAnalysisKinds.inc"

clang/include/clang/Basic/DiagnosticComment.h

@@ -15,7 +15,7 @@ namespace clang {
 namespace diag {
 enum {
 #define DIAG(ENUM, FLAGS, DEFAULT_MAPPING, DESC, GROUP, SFINAE, NOWERROR,      \
-             SHOWINSYSHEADER, CATEGORY)                                        \
+             SHOWINSYSHEADER, DEFERRABLE, CATEGORY)                            \
   ENUM,
 #define COMMENTSTART
 #include "clang/Basic/DiagnosticCommentKinds.inc"

clang/include/clang/Basic/DiagnosticCrossTU.h

@@ -15,7 +15,7 @@ namespace clang {
 namespace diag {
 enum {
 #define DIAG(ENUM, FLAGS, DEFAULT_MAPPING, DESC, GROUP, SFINAE, NOWERROR,      \
-             SHOWINSYSHEADER, CATEGORY)                                        \
+             SHOWINSYSHEADER, DEFERRABLE, CATEGORY)                            \
   ENUM,
 #define CROSSTUSTART
 #include "clang/Basic/DiagnosticCrossTUKinds.inc"

clang/include/clang/Basic/DiagnosticDriver.h

@@ -15,7 +15,7 @@ namespace clang {
 namespace diag {
 enum {
 #define DIAG(ENUM, FLAGS, DEFAULT_MAPPING, DESC, GROUP, SFINAE, NOWERROR,      \
-             SHOWINSYSHEADER, CATEGORY)                                        \
+             SHOWINSYSHEADER, DEFERRABLE, CATEGORY)                            \
   ENUM,
 #define DRIVERSTART
 #include "clang/Basic/DiagnosticDriverKinds.inc"

clang/include/clang/Basic/DiagnosticFrontend.h

@@ -15,7 +15,7 @@ namespace clang {
 namespace diag {
 enum {
 #define DIAG(ENUM, FLAGS, DEFAULT_MAPPING, DESC, GROUP, SFINAE, NOWERROR,      \
-             SHOWINSYSHEADER, CATEGORY)                                        \
+             SHOWINSYSHEADER, DEFERRABLE, CATEGORY)                            \
   ENUM,
 #define FRONTENDSTART
 #include "clang/Basic/DiagnosticFrontendKinds.inc"

clang/include/clang/Basic/DiagnosticIDs.h

@@ -64,8 +64,9 @@ namespace clang {
 
     // Get typedefs for common diagnostics.
     enum {
-#define DIAG(ENUM,FLAGS,DEFAULT_MAPPING,DESC,GROUP,\
-             SFINAE,CATEGORY,NOWERROR,SHOWINSYSHEADER) ENUM,
+#define DIAG(ENUM, FLAGS, DEFAULT_MAPPING, DESC, GROUP, SFINAE, CATEGORY,      \
+             NOWERROR, SHOWINSYSHEADER, DEFFERABLE)                            \
+  ENUM,
 #define COMMONSTART
 #include "clang/Basic/DiagnosticCommonKinds.inc"
       NUM_BUILTIN_COMMON_DIAGNOSTICS
@@ -280,6 +281,13 @@ class DiagnosticIDs : public RefCountedBase<DiagnosticIDs> {
   /// are not SFINAE errors.
   static SFINAEResponse getDiagnosticSFINAEResponse(unsigned DiagID);
 
+  /// Whether the diagnostic message can be deferred.
+  ///
+  /// For single source offloading languages, a diagnostic message occurred
+  /// in a device host function may be deferred until the function is sure
+  /// to be emitted.
+  static bool isDeferrable(unsigned DiagID);
+
   /// Get the string of all diagnostic flags.
   ///
   /// \returns A list of all diagnostics flags as they would be written in a

clang/include/clang/Basic/DiagnosticLex.h

@@ -15,7 +15,7 @@ namespace clang {
 namespace diag {
 enum {
 #define DIAG(ENUM, FLAGS, DEFAULT_MAPPING, DESC, GROUP, SFINAE, NOWERROR,      \
-             SHOWINSYSHEADER, CATEGORY)                                        \
+             SHOWINSYSHEADER, DEFERRABLE, CATEGORY)                            \
   ENUM,
 #define LEXSTART
 #include "clang/Basic/DiagnosticLexKinds.inc"