Merge branch 'master' into release-0.16.0

Author: redstar

dmd2/cond.c

@@ -205,6 +205,9 @@ bool VersionCondition::isPredefined(const char *ident)
         "SPARC64",
         "S390",
         "S390X",
+#if IN_LLVM
+        "SystemZ",
+#endif
         "HPPA",
         "HPPA64",
         "SH",
@@ -216,6 +219,9 @@ bool VersionCondition::isPredefined(const char *ident)
         "BigEndian",
         "ELFv1",
         "ELFv2",
+#if IN_LLVM
+        "CRuntime_Bionic",
+#endif
         "CRuntime_Digitalmars",
         "CRuntime_Glibc",
         "CRuntime_Microsoft",
@@ -235,10 +241,6 @@ bool VersionCondition::isPredefined(const char *ident)
         "assert",
         "all",
         "none",
-#if IN_LLVM
-        "darwin", "Thumb",
-        "NVPTX", "NVPTX64",
-#endif
         NULL
     };
 

driver/main.cpp

@@ -671,6 +671,13 @@ static void registerPredefinedTargetVersions() {
             VersionCondition::addPredefinedGlobalIdent("NVPTX64");
             VersionCondition::addPredefinedGlobalIdent("D_HardFloat");
             break;
+#endif
+#if LDC_LLVM_VER >= 303
+        case llvm::Triple::systemz:
+            VersionCondition::addPredefinedGlobalIdent("SystemZ");
+            VersionCondition::addPredefinedGlobalIdent("S390X"); // For backwards compatibility.
+            VersionCondition::addPredefinedGlobalIdent("D_HardFloat");
+            break;
 #endif
         default:
             error(Loc(), "invalid cpu architecture specified: %s", global.params.targetTriple.getArchName().str().c_str());
@@ -742,12 +749,14 @@ static void registerPredefinedTargetVersions() {
             if (global.params.targetTriple.getEnvironment() == llvm::Triple::Android)
             {
                 VersionCondition::addPredefinedGlobalIdent("Android");
+                VersionCondition::addPredefinedGlobalIdent("CRuntime_Bionic");
             }
             else
 #endif
             {
                 VersionCondition::addPredefinedGlobalIdent("linux");
                 VersionCondition::addPredefinedGlobalIdent("Posix");
+                VersionCondition::addPredefinedGlobalIdent("CRuntime_Glibc");
             }
             break;
         case llvm::Triple::Haiku:

gen/abi-x86.cpp

@@ -215,6 +215,31 @@ struct X86TargetABI : TargetABI
             // IMPLICIT PARAMETERS
 
             // EXPLICIT PARAMETERS
+
+            // Clang does not pass empty structs, while it seems that GCC does,
+            // at least on Linux x86.
+            if (isOSX)
+            {
+                size_t i = 0;
+                while (i < fty.args.size())
+                {
+                    Type *type = fty.args[i]->type->toBasetype();
+                    if (type->ty == Tstruct)
+                    {
+                        // Do not pass empty structs at all for C++ ABI compatibility.
+                        // Tests with clang reveal that more complex "empty" types, for
+                        // example a struct containing an empty struct, are not
+                        // optimized in the same way.
+                        StructDeclaration *sd = static_cast<TypeStruct *>(type)->sym;
+                        if (sd->fields.empty())
+                        {
+                            fty.args.erase(fty.args.begin() + i);
+                            continue;
+                        }
+                    }
+                    ++i;
+                }
+            }
         }
     }
 };

gen/asm-x86.h

@@ -92,7 +92,7 @@ namespace AsmParserx8664
         std::string gccName; // GAS will take upper case, but GCC won't (needed for the clobber list)
         Identifier * ident;
         char size;
-        char baseReg; // %% todo: Reg, Reg_XX
+        signed char baseReg; // %% todo: Reg, Reg_XX
     } regInfo[N_Regs] =
     {
         { "EAX",   NULL_TREE, NULL,  4, Reg_EAX },

gen/functions.cpp

@@ -164,17 +164,6 @@ llvm::FunctionType* DtoFunctionType(Type* type, IrFuncTy &irFty, Type* thistype,
         }
         else if (!passPointer)
         {
-            if (loweredDType->toBasetype()->ty == Tstruct)
-            {
-                // Do not pass empty structs at all for C++ ABI compatibility.
-                // Tests with clang reveal that more complex "empty" types, for
-                // example a struct containing an empty struct, are not
-                // optimized in the same way.
-                StructDeclaration *sd =
-                    static_cast<TypeStruct*>(loweredDType->toBasetype())->sym;
-                if (sd->fields.empty()) continue;
-            }
-
             if (abi->passByVal(loweredDType))
             {
                 attrBuilder.add(LDC_ATTRIBUTE(ByVal));

gen/pragma.cpp

@@ -570,10 +570,18 @@ bool DtoIsIntrinsic(FuncDeclaration *fd)
     switch (fd->llvmInternal)
     {
     case LLVMintrinsic:
+    case LLVMalloca:
+    case LLVMfence:
     case LLVMatomic_store:
     case LLVMatomic_load:
     case LLVMatomic_cmp_xchg:
     case LLVMatomic_rmw:
+    case LLVMbitop_bt:
+    case LLVMbitop_btc:
+    case LLVMbitop_btr:
+    case LLVMbitop_bts:
+    case LLVMbitop_vld:
+    case LLVMbitop_vst:
         return true;
 
     default: