varungandhi-apple updated this revision to Diff 321801.
varungandhi-apple added a comment.
Correct documentation on tail call behavior as pointed out by John.
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D95561/new/
https://reviews.llvm.org/D95561
Files:
clang/include/clang-c/Index.h
clang/include/clang/Basic/Attr.td
clang/include/clang/Basic/AttrDocs.td
clang/include/clang/Basic/DiagnosticSemaKinds.td
clang/include/clang/Basic/Specifiers.h
clang/include/clang/CodeGen/SwiftCallingConv.h
clang/lib/AST/ItaniumMangle.cpp
clang/lib/AST/MicrosoftMangle.cpp
clang/lib/AST/Type.cpp
clang/lib/AST/TypePrinter.cpp
clang/lib/Basic/Targets/AArch64.cpp
clang/lib/Basic/Targets/ARM.cpp
clang/lib/Basic/Targets/PPC.h
clang/lib/Basic/Targets/SystemZ.h
clang/lib/Basic/Targets/WebAssembly.h
clang/lib/Basic/Targets/X86.h
clang/lib/CodeGen/CGCall.cpp
clang/lib/CodeGen/CGDebugInfo.cpp
clang/lib/Sema/SemaDeclAttr.cpp
clang/lib/Sema/SemaType.cpp
clang/test/CodeGen/arm-swiftcall.c
clang/test/CodeGen/debug-info-cc.c
clang/test/Sema/attr-c2x.c
clang/test/Sema/attr-swiftcall.c
clang/test/Sema/no_callconv.cpp
clang/test/SemaCXX/attr-swiftcall.cpp
clang/tools/libclang/CXType.cpp
llvm/include/llvm/Demangle/MicrosoftDemangleNodes.h
llvm/lib/Demangle/MicrosoftDemangle.cpp
llvm/lib/Demangle/MicrosoftDemangleNodes.cpp
llvm/test/Demangle/ms-mangle.test
Index: llvm/test/Demangle/ms-mangle.test
===================================================================
--- llvm/test/Demangle/ms-mangle.test
+++ llvm/test/Demangle/ms-mangle.test
@@ -341,6 +341,9 @@
?swift_func@@YSXXZ
; CHECK: void __attribute__((__swiftcall__)) swift_func(void)
+?swift_async_func@@YTXXZ
+; CHECK: void __attribute__((__swiftasynccall__)) swift_async_func(void)
+
??$fn_tmpl@$1?extern_c_func@@YAXXZ@@YAXXZ
; CHECK: void __cdecl fn_tmpl<&void __cdecl extern_c_func(void)>(void)
Index: llvm/lib/Demangle/MicrosoftDemangleNodes.cpp
===================================================================
--- llvm/lib/Demangle/MicrosoftDemangleNodes.cpp
+++ llvm/lib/Demangle/MicrosoftDemangleNodes.cpp
@@ -110,6 +110,9 @@
case CallingConv::Swift:
OS << "__attribute__((__swiftcall__)) ";
break;
+ case CallingConv::SwiftAsync:
+ OS << "__attribute__((__swiftasynccall__)) ";
+ break;
default:
break;
}
Index: llvm/lib/Demangle/MicrosoftDemangle.cpp
===================================================================
--- llvm/lib/Demangle/MicrosoftDemangle.cpp
+++ llvm/lib/Demangle/MicrosoftDemangle.cpp
@@ -1713,6 +1713,8 @@
return CallingConv::Vectorcall;
case 'S':
return CallingConv::Swift;
+ case 'T':
+ return CallingConv::SwiftAsync;
}
return CallingConv::None;
Index: llvm/include/llvm/Demangle/MicrosoftDemangleNodes.h
===================================================================
--- llvm/include/llvm/Demangle/MicrosoftDemangleNodes.h
+++ llvm/include/llvm/Demangle/MicrosoftDemangleNodes.h
@@ -67,7 +67,8 @@
Eabi,
Vectorcall,
Regcall,
- Swift, // Clang-only
+ Swift, // Clang-only
+ SwiftAsync, // Clang-only
};
enum class ReferenceKind : uint8_t { None, LValueRef, RValueRef };
Index: clang/tools/libclang/CXType.cpp
===================================================================
--- clang/tools/libclang/CXType.cpp
+++ clang/tools/libclang/CXType.cpp
@@ -664,6 +664,7 @@
TCALLINGCONV(AAPCS_VFP);
TCALLINGCONV(IntelOclBicc);
TCALLINGCONV(Swift);
+ TCALLINGCONV(SwiftAsync);
TCALLINGCONV(PreserveMost);
TCALLINGCONV(PreserveAll);
case CC_SpirFunction: return CXCallingConv_Unexposed;
Index: clang/test/SemaCXX/attr-swiftcall.cpp
===================================================================
--- clang/test/SemaCXX/attr-swiftcall.cpp
+++ clang/test/SemaCXX/attr-swiftcall.cpp
@@ -1,14 +1,20 @@
// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsyntax-only -verify %s
#define SWIFTCALL __attribute__((swiftcall))
+#define SWIFTASYNCCALL __attribute__((swiftasynccall))
#define INDIRECT_RESULT __attribute__((swift_indirect_result))
#define ERROR_RESULT __attribute__((swift_error_result))
#define CONTEXT __attribute__((swift_context))
+#define ASYNC_CONTEXT __attribute__((swift_async_context))
int notAFunction SWIFTCALL; // expected-warning {{'swiftcall' only applies to function types; type here is 'int'}}
+int notAnAsyncFunction SWIFTASYNCCALL; // expected-warning {{'swiftasynccall' only applies to function types; type here is 'int'}}
void variadic(int x, ...) SWIFTCALL; // expected-error {{variadic function cannot use swiftcall calling convention}}
+void variadic_async(int x, ...) SWIFTASYNCCALL; // expected-error {{variadic function cannot use swiftasynccall calling convention}}
void multiple_ccs(int x) SWIFTCALL __attribute__((vectorcall)); // expected-error {{vectorcall and swiftcall attributes are not compatible}}
+void multiple_ccs_async(int x) SWIFTASYNCCALL __attribute__((vectorcall)); // expected-error {{vectorcall and swiftasynccall attributes are not compatible}}
void (*functionPointer)(void) SWIFTCALL;
+void (*asyncFunctionPointer)(void) SWIFTASYNCCALL;
void indirect_result_nonswift(INDIRECT_RESULT void *out); // expected-error {{'swift_indirect_result' parameter can only be used with swiftcall calling convention}}
void indirect_result_bad_position(int first, INDIRECT_RESULT void *out) SWIFTCALL; // expected-error {{'swift_indirect_result' parameters must be first parameters of function}}
@@ -28,6 +34,11 @@
void context_okay(CONTEXT void *context) SWIFTCALL;
void context_okay(CONTEXT void *context, void *selfType, char **selfWitnessTable) SWIFTCALL;
+void async_context_nonswift(ASYNC_CONTEXT void *context); // expected-error {{'swift_async_context' parameter can only be used with swiftasynccall calling convention}}
+void async_context_bad_type(ASYNC_CONTEXT int context) SWIFTASYNCCALL; // expected-error {{'swift_async_context' parameter must have pointer type; type here is 'int'}}
+void async_context_okay(ASYNC_CONTEXT void *context) SWIFTASYNCCALL;
+void async_context_okay(void *someArg, ASYNC_CONTEXT void *context, void *otherArg) SWIFTASYNCCALL;
+
template <class T> void indirect_result_temp_okay1(INDIRECT_RESULT T *out) SWIFTCALL;
template <class T> void indirect_result_temp_okay2(INDIRECT_RESULT T out) SWIFTCALL; // expected-note {{candidate template ignored: substitution failure [with T = int]: 'swift_indirect_result' parameter must have pointer type; type here is 'int'}}
void test_indirect_result_temp(void *out) {
Index: clang/test/Sema/no_callconv.cpp
===================================================================
--- clang/test/Sema/no_callconv.cpp
+++ clang/test/Sema/no_callconv.cpp
@@ -11,6 +11,7 @@
void __attribute__((ms_abi)) funcH() {} // expected-error {{'ms_abi' calling convention is not supported for this target}}
void __attribute__((intel_ocl_bicc)) funcJ() {} // expected-error {{'intel_ocl_bicc' calling convention is not supported for this target}}
void __attribute__((swiftcall)) funcK() {} // expected-error {{'swiftcall' calling convention is not supported for this target}}
+void __attribute__((swiftasynccall)) funcKK() {} // expected-error {{'swiftasynccall' calling convention is not supported for this target}}
void __attribute__((pascal)) funcG() {} // expected-error {{'pascal' calling convention is not supported for this target}}
void __attribute__((preserve_most)) funcL() {} // expected-error {{'preserve_most' calling convention is not supported for this target}}
void __attribute__((preserve_all)) funcM() {} // expected-error {{'preserve_all' calling convention is not supported for this target}}
@@ -26,6 +27,7 @@
void __attribute__((ms_abi)) funcH() {}
void __attribute__((intel_ocl_bicc)) funcJ() {}
void __attribute__((swiftcall)) funcK() {}
+void __attribute__((swiftasynccall)) funcKK() {}
void __attribute__((preserve_most)) funcL() {}
void __attribute__((preserve_all)) funcM() {}
Index: clang/test/Sema/attr-swiftcall.c
===================================================================
--- clang/test/Sema/attr-swiftcall.c
+++ clang/test/Sema/attr-swiftcall.c
@@ -2,16 +2,22 @@
// RUN: %clang_cc1 -triple x86_64-unknown-windows -fsyntax-only -verify %s
#define SWIFTCALL __attribute__((swiftcall))
+#define SWIFTASYNCCALL __attribute__((swiftasynccall))
#define INDIRECT_RESULT __attribute__((swift_indirect_result))
#define ERROR_RESULT __attribute__((swift_error_result))
#define CONTEXT __attribute__((swift_context))
#define ASYNC_CONTEXT __attribute__((swift_async_context))
int notAFunction SWIFTCALL; // expected-warning {{'swiftcall' only applies to function types; type here is 'int'}}
+int notAnAsyncFunction SWIFTASYNCCALL; // expected-warning {{'swiftasynccall' only applies to function types; type here is 'int'}}
void variadic(int x, ...) SWIFTCALL; // expected-error {{variadic function cannot use swiftcall calling convention}}
+void variadic_async(int x, ...) SWIFTASYNCCALL; // expected-error {{variadic function cannot use swiftasynccall calling convention}}
void unprototyped() SWIFTCALL; // expected-error {{function with no prototype cannot use the swiftcall calling convention}}
+void unprototyped_async() SWIFTASYNCCALL; // expected-error {{function with no prototype cannot use the swiftasynccall calling convention}}
void multiple_ccs(int x) SWIFTCALL __attribute__((vectorcall)); // expected-error {{vectorcall and swiftcall attributes are not compatible}}
+void multiple_ccs_async(int x) SWIFTASYNCCALL __attribute__((vectorcall)); // expected-error {{vectorcall and swiftasynccall attributes are not compatible}}
void (*functionPointer)(void) SWIFTCALL;
+void (*asyncFunctionPointer)(void) SWIFTASYNCCALL;
void indirect_result_nonswift(INDIRECT_RESULT void *out); // expected-error {{'swift_indirect_result' parameter can only be used with swiftcall calling convention}}
void indirect_result_bad_position(int first, INDIRECT_RESULT void *out) SWIFTCALL; // expected-error {{'swift_indirect_result' parameters must be first parameters of function}}
@@ -31,7 +37,7 @@
void context_okay(CONTEXT void *context) SWIFTCALL;
void context_okay2(CONTEXT void *context, void *selfType, char **selfWitnessTable) SWIFTCALL;
-void async_context_okay_for_now(ASYNC_CONTEXT void *context);
-void async_context_bad_type(ASYNC_CONTEXT int context) SWIFTCALL; // expected-error {{'swift_async_context' parameter must have pointer type; type here is 'int'}}
-void async_context_okay(ASYNC_CONTEXT void *context) SWIFTCALL;
-void async_context_okay2(ASYNC_CONTEXT void *context, void *selfType, char **selfWitnessTable) SWIFTCALL;
+void async_context_nonswift(ASYNC_CONTEXT void *context); // expected-error {{'swift_async_context' parameter can only be used with swiftasynccall calling convention}}
+void async_context_bad_type(ASYNC_CONTEXT int context) SWIFTASYNCCALL; // expected-error {{'swift_async_context' parameter must have pointer type; type here is 'int'}}
+void async_context_okay(ASYNC_CONTEXT void *context) SWIFTASYNCCALL;
+void async_context_okay2(void *someArg, ASYNC_CONTEXT void *context, void *otherArg) SWIFTASYNCCALL;
Index: clang/test/Sema/attr-c2x.c
===================================================================
--- clang/test/Sema/attr-c2x.c
+++ clang/test/Sema/attr-c2x.c
@@ -16,6 +16,8 @@
void context_okay(void *context [[clang::swift_context]]) [[clang::swiftcall]];
void context_okay2(void *context [[clang::swift_context]], void *selfType, char **selfWitnessTable) [[clang::swiftcall]];
+void context_async_okay(void *context [[clang::swift_async_context]]) [[clang::swiftasynccall]];
+void context_async_okay2(void *context [[clang::swift_async_context]], void *selfType, char **selfWitnessTable) [[clang::swiftasynccall]];
void *f1(void) [[clang::ownership_returns(foo)]];
void *f2() [[clang::ownership_returns(foo)]]; // expected-warning {{'ownership_returns' attribute only applies to non-K&R-style functions}}
Index: clang/test/CodeGen/debug-info-cc.c
===================================================================
--- clang/test/CodeGen/debug-info-cc.c
+++ clang/test/CodeGen/debug-info-cc.c
@@ -19,6 +19,7 @@
// CC_SpirFunction, // default for OpenCL functions on SPIR target
// CC_OpenCLKernel, // inferred for OpenCL kernels
// CC_Swift, // __attribute__((swiftcall))
+// CC_SwiftAsync, // __attribute__((swiftasynccall))
// CC_PreserveMost, // __attribute__((preserve_most))
// CC_PreserveAll, // __attribute__((preserve_all))
// };
@@ -56,6 +57,13 @@
return a+b;
}
+// [FIXME: swiftasynccc] Update debuginfo tag to SwiftAsync once LLVM support lands.
+// LINUX: !DISubprogram({{.*}}"add_swiftasynccall", {{.*}}type: ![[FTY:[0-9]+]]
+// LINUX: ![[FTY]] = !DISubroutineType({{.*}}cc: DW_CC_LLVM_Swift,
+__attribute__((swiftasynccall)) int add_swiftasynccall(int a, int b) {
+ return a+b;
+}
+
// LINUX: !DISubprogram({{.*}}"add_inteloclbicc", {{.*}}type: ![[FTY:[0-9]+]]
// LINUX: ![[FTY]] = !DISubroutineType({{.*}}cc: DW_CC_LLVM_IntelOclBicc,
__attribute__((intel_ocl_bicc)) int add_inteloclbicc(int a, int b) {
Index: clang/test/CodeGen/arm-swiftcall.c
===================================================================
--- clang/test/CodeGen/arm-swiftcall.c
+++ clang/test/CodeGen/arm-swiftcall.c
@@ -3,6 +3,7 @@
// RUN: %clang_cc1 -triple armv7k-apple-ios9 -emit-llvm -o - %s | FileCheck %s
#define SWIFTCALL __attribute__((swiftcall))
+#define SWIFTASYNCCALL __attribute__((swiftasynccall))
#define OUT __attribute__((swift_indirect_result))
#define ERROR __attribute__((swift_error_result))
#define CONTEXT __attribute__((swift_context))
@@ -54,7 +55,7 @@
SWIFTCALL void context_error_2(short s, CONTEXT int *self, ERROR float **error) {}
// CHECK-LABEL: define{{.*}} void @context_error_2(i16{{.*}}, i32* swiftself{{.*}}, float** swifterror %0)
-SWIFTCALL void async_context_1(ASYNC_CONTEXT void *self) {}
+SWIFTASYNCCALL void async_context_1(ASYNC_CONTEXT void *self) {}
// CHECK-LABEL: define {{.*}} void @async_context_1(i8* swiftasync
/*****************************************************************************/
Index: clang/lib/Sema/SemaType.cpp
===================================================================
--- clang/lib/Sema/SemaType.cpp
+++ clang/lib/Sema/SemaType.cpp
@@ -117,6 +117,7 @@
case ParsedAttr::AT_RegCall: \
case ParsedAttr::AT_Pascal: \
case ParsedAttr::AT_SwiftCall: \
+ case ParsedAttr::AT_SwiftAsyncCall: \
case ParsedAttr::AT_VectorCall: \
case ParsedAttr::AT_AArch64VectorPcs: \
case ParsedAttr::AT_MSABI: \
@@ -2759,13 +2760,18 @@
assert(EPI.ExtParameterInfos && "shouldn't get here without param infos");
bool hasCheckedSwiftCall = false;
+ bool hasCheckedSwiftAsyncCall = false;
+ auto reportWrongABI = [&](unsigned paramIndex, bool shouldBeAsync) {
+ S.Diag(getParamLoc(paramIndex), diag::err_swift_param_attr_not_swiftcall)
+ << getParameterABISpelling(EPI.ExtParameterInfos[paramIndex].getABI())
+ << shouldBeAsync;
+ };
auto checkForSwiftCC = [&](unsigned paramIndex) {
// Only do this once.
if (hasCheckedSwiftCall) return;
hasCheckedSwiftCall = true;
if (EPI.ExtInfo.getCC() == CC_Swift) return;
- S.Diag(getParamLoc(paramIndex), diag::err_swift_param_attr_not_swiftcall)
- << getParameterABISpelling(EPI.ExtParameterInfos[paramIndex].getABI());
+ reportWrongABI(paramIndex, false);
};
for (size_t paramIndex = 0, numParams = paramTypes.size();
@@ -2792,7 +2798,10 @@
continue;
case ParameterABI::SwiftAsyncContext:
- // FIXME: might want to require swiftasynccc when it exists
+ if (!hasCheckedSwiftAsyncCall && EPI.ExtInfo.getCC() != CC_SwiftAsync) {
+ reportWrongABI(paramIndex, true);
+ }
+ hasCheckedSwiftAsyncCall = true;
continue;
// swift_error parameters must be preceded by a swift_context parameter.
@@ -7303,6 +7312,8 @@
return createSimpleAttr<PascalAttr>(Ctx, Attr);
case ParsedAttr::AT_SwiftCall:
return createSimpleAttr<SwiftCallAttr>(Ctx, Attr);
+ case ParsedAttr::AT_SwiftAsyncCall:
+ return createSimpleAttr<SwiftAsyncCallAttr>(Ctx, Attr);
case ParsedAttr::AT_VectorCall:
return createSimpleAttr<VectorCallAttr>(Ctx, Attr);
case ParsedAttr::AT_AArch64VectorPcs:
Index: clang/lib/Sema/SemaDeclAttr.cpp
===================================================================
--- clang/lib/Sema/SemaDeclAttr.cpp
+++ clang/lib/Sema/SemaDeclAttr.cpp
@@ -4645,6 +4645,9 @@
case ParsedAttr::AT_SwiftCall:
D->addAttr(::new (S.Context) SwiftCallAttr(S.Context, AL));
return;
+ case ParsedAttr::AT_SwiftAsyncCall:
+ D->addAttr(::new (S.Context) SwiftAsyncCallAttr(S.Context, AL));
+ return;
case ParsedAttr::AT_VectorCall:
D->addAttr(::new (S.Context) VectorCallAttr(S.Context, AL));
return;
@@ -4806,6 +4809,9 @@
case ParsedAttr::AT_SwiftCall:
CC = CC_Swift;
break;
+ case ParsedAttr::AT_SwiftAsyncCall:
+ CC = CC_SwiftAsync;
+ break;
case ParsedAttr::AT_VectorCall:
CC = CC_X86VectorCall;
break;
@@ -8097,6 +8103,7 @@
case ParsedAttr::AT_Pascal:
case ParsedAttr::AT_RegCall:
case ParsedAttr::AT_SwiftCall:
+ case ParsedAttr::AT_SwiftAsyncCall:
case ParsedAttr::AT_VectorCall:
case ParsedAttr::AT_MSABI:
case ParsedAttr::AT_SysVABI:
Index: clang/lib/CodeGen/CGDebugInfo.cpp
===================================================================
--- clang/lib/CodeGen/CGDebugInfo.cpp
+++ clang/lib/CodeGen/CGDebugInfo.cpp
@@ -1248,6 +1248,9 @@
return llvm::dwarf::DW_CC_LLVM_OpenCLKernel;
case CC_Swift:
return llvm::dwarf::DW_CC_LLVM_Swift;
+ case CC_SwiftAsync:
+ // [FIXME: swiftasynccc] Update to SwiftAsync once LLVM support lands.
+ return llvm::dwarf::DW_CC_LLVM_Swift;
case CC_PreserveMost:
return llvm::dwarf::DW_CC_LLVM_PreserveMost;
case CC_PreserveAll:
Index: clang/lib/CodeGen/CGCall.cpp
===================================================================
--- clang/lib/CodeGen/CGCall.cpp
+++ clang/lib/CodeGen/CGCall.cpp
@@ -66,6 +66,9 @@
case CC_PreserveMost: return llvm::CallingConv::PreserveMost;
case CC_PreserveAll: return llvm::CallingConv::PreserveAll;
case CC_Swift: return llvm::CallingConv::Swift;
+ // [FIXME: swiftasynccc] Update to SwiftAsync once LLVM support lands.
+ case CC_SwiftAsync:
+ return llvm::CallingConv::Swift;
}
}
@@ -773,7 +776,7 @@
// Force target independent argument handling for the host visible
// kernel functions.
computeSPIRKernelABIInfo(CGM, *FI);
- } else if (info.getCC() == CC_Swift) {
+ } else if (info.getCC() == CC_Swift || info.getCC() == CC_SwiftAsync) {
swiftcall::computeABIInfo(CGM, *FI);
} else {
getABIInfo().computeInfo(*FI);
@@ -3885,11 +3888,11 @@
// later, so we can't check it directly.
static bool hasInAllocaArgs(CodeGenModule &CGM, CallingConv ExplicitCC,
ArrayRef<QualType> ArgTypes) {
- // The Swift calling convention doesn't go through the target-specific
- // argument classification, so it never uses inalloca.
+ // The Swift calling conventions don't go through the target-specific
+ // argument classification, they never use inalloca.
// TODO: Consider limiting inalloca use to only calling conventions supported
// by MSVC.
- if (ExplicitCC == CC_Swift)
+ if (ExplicitCC == CC_Swift || ExplicitCC == CC_SwiftAsync)
return false;
if (!CGM.getTarget().getCXXABI().isMicrosoft())
return false;
Index: clang/lib/Basic/Targets/X86.h
===================================================================
--- clang/lib/Basic/Targets/X86.h
+++ clang/lib/Basic/Targets/X86.h
@@ -344,6 +344,7 @@
case CC_C:
case CC_PreserveMost:
case CC_Swift:
+ case CC_SwiftAsync:
case CC_X86Pascal:
case CC_IntelOclBicc:
case CC_OpenCLKernel:
@@ -702,6 +703,7 @@
switch (CC) {
case CC_C:
case CC_Swift:
+ case CC_SwiftAsync:
case CC_X86VectorCall:
case CC_IntelOclBicc:
case CC_Win64:
@@ -783,6 +785,7 @@
case CC_PreserveAll:
case CC_X86_64SysV:
case CC_Swift:
+ case CC_SwiftAsync:
case CC_X86RegCall:
case CC_OpenCLKernel:
return CCCR_OK;
Index: clang/lib/Basic/Targets/WebAssembly.h
===================================================================
--- clang/lib/Basic/Targets/WebAssembly.h
+++ clang/lib/Basic/Targets/WebAssembly.h
@@ -129,6 +129,7 @@
switch (CC) {
case CC_C:
case CC_Swift:
+ case CC_SwiftAsync:
return CCCR_OK;
default:
return CCCR_Warning;
Index: clang/lib/Basic/Targets/SystemZ.h
===================================================================
--- clang/lib/Basic/Targets/SystemZ.h
+++ clang/lib/Basic/Targets/SystemZ.h
@@ -141,6 +141,7 @@
switch (CC) {
case CC_C:
case CC_Swift:
+ case CC_SwiftAsync:
case CC_OpenCLKernel:
return CCCR_OK;
default:
Index: clang/lib/Basic/Targets/PPC.h
===================================================================
--- clang/lib/Basic/Targets/PPC.h
+++ clang/lib/Basic/Targets/PPC.h
@@ -450,6 +450,7 @@
CallingConvCheckResult checkCallingConvention(CallingConv CC) const override {
switch (CC) {
case CC_Swift:
+ case CC_SwiftAsync:
return CCCR_OK;
default:
return CCCR_Warning;
Index: clang/lib/Basic/Targets/ARM.cpp
===================================================================
--- clang/lib/Basic/Targets/ARM.cpp
+++ clang/lib/Basic/Targets/ARM.cpp
@@ -1120,6 +1120,7 @@
case CC_AAPCS:
case CC_AAPCS_VFP:
case CC_Swift:
+ case CC_SwiftAsync:
case CC_OpenCLKernel:
return CCCR_OK;
default:
@@ -1199,6 +1200,7 @@
case CC_PreserveMost:
case CC_PreserveAll:
case CC_Swift:
+ case CC_SwiftAsync:
return CCCR_OK;
default:
return CCCR_Warning;
Index: clang/lib/Basic/Targets/AArch64.cpp
===================================================================
--- clang/lib/Basic/Targets/AArch64.cpp
+++ clang/lib/Basic/Targets/AArch64.cpp
@@ -537,6 +537,7 @@
switch (CC) {
case CC_C:
case CC_Swift:
+ case CC_SwiftAsync:
case CC_PreserveMost:
case CC_PreserveAll:
case CC_OpenCLKernel:
@@ -810,6 +811,7 @@
case CC_PreserveMost:
case CC_PreserveAll:
case CC_Swift:
+ case CC_SwiftAsync:
case CC_Win64:
return CCCR_OK;
default:
Index: clang/lib/AST/TypePrinter.cpp
===================================================================
--- clang/lib/AST/TypePrinter.cpp
+++ clang/lib/AST/TypePrinter.cpp
@@ -976,6 +976,9 @@
case CC_Swift:
OS << " __attribute__((swiftcall))";
break;
+ case CC_SwiftAsync:
+ OS << "__attribute__((swiftasynccall))";
+ break;
case CC_PreserveMost:
OS << " __attribute__((preserve_most))";
break;
@@ -1704,6 +1707,7 @@
case attr::StdCall: OS << "stdcall"; break;
case attr::ThisCall: OS << "thiscall"; break;
case attr::SwiftCall: OS << "swiftcall"; break;
+ case attr::SwiftAsyncCall: OS << "swiftasynccall"; break;
case attr::VectorCall: OS << "vectorcall"; break;
case attr::Pascal: OS << "pascal"; break;
case attr::MSABI: OS << "ms_abi"; break;
Index: clang/lib/AST/Type.cpp
===================================================================
--- clang/lib/AST/Type.cpp
+++ clang/lib/AST/Type.cpp
@@ -3134,6 +3134,7 @@
case CC_SpirFunction: return "spir_function";
case CC_OpenCLKernel: return "opencl_kernel";
case CC_Swift: return "swiftcall";
+ case CC_SwiftAsync: return "swiftasynccall";
case CC_PreserveMost: return "preserve_most";
case CC_PreserveAll: return "preserve_all";
}
@@ -3550,6 +3551,7 @@
case attr::ThisCall:
case attr::RegCall:
case attr::SwiftCall:
+ case attr::SwiftAsyncCall:
case attr::VectorCall:
case attr::AArch64VectorPcs:
case attr::Pascal:
Index: clang/lib/AST/MicrosoftMangle.cpp
===================================================================
--- clang/lib/AST/MicrosoftMangle.cpp
+++ clang/lib/AST/MicrosoftMangle.cpp
@@ -2685,6 +2685,8 @@
// ::= J # __export __fastcall
// ::= Q # __vectorcall
// ::= S # __attribute__((__swiftcall__)) // Clang-only
+ // ::= T # __attribute__((__swiftasynccall__))
+ // // Clang-only
// ::= w # __regcall
// The 'export' calling conventions are from a bygone era
// (*cough*Win16*cough*) when functions were declared for export with
@@ -2704,6 +2706,7 @@
case CC_X86FastCall: Out << 'I'; break;
case CC_X86VectorCall: Out << 'Q'; break;
case CC_Swift: Out << 'S'; break;
+ case CC_SwiftAsync: Out << 'T'; break;
case CC_PreserveMost: Out << 'U'; break;
case CC_X86RegCall: Out << 'w'; break;
}
Index: clang/lib/AST/ItaniumMangle.cpp
===================================================================
--- clang/lib/AST/ItaniumMangle.cpp
+++ clang/lib/AST/ItaniumMangle.cpp
@@ -2908,6 +2908,8 @@
return "ms_abi";
case CC_Swift:
return "swiftcall";
+ case CC_SwiftAsync:
+ return "swiftasynccall";
}
llvm_unreachable("bad calling convention");
}
Index: clang/include/clang/CodeGen/SwiftCallingConv.h
===================================================================
--- clang/include/clang/CodeGen/SwiftCallingConv.h
+++ clang/include/clang/CodeGen/SwiftCallingConv.h
@@ -6,7 +6,8 @@
//
//===----------------------------------------------------------------------===//
//
-// Defines constants and types related to Swift ABI lowering.
+// Defines constants and types related to Swift ABI lowering. The same ABI
+// lowering applies to both sync and async functions.
//
//===----------------------------------------------------------------------===//
Index: clang/include/clang/Basic/Specifiers.h
===================================================================
--- clang/include/clang/Basic/Specifiers.h
+++ clang/include/clang/Basic/Specifiers.h
@@ -251,23 +251,24 @@
/// CallingConv - Specifies the calling convention that a function uses.
enum CallingConv {
- CC_C, // __attribute__((cdecl))
- CC_X86StdCall, // __attribute__((stdcall))
- CC_X86FastCall, // __attribute__((fastcall))
- CC_X86ThisCall, // __attribute__((thiscall))
- CC_X86VectorCall, // __attribute__((vectorcall))
- CC_X86Pascal, // __attribute__((pascal))
- CC_Win64, // __attribute__((ms_abi))
- CC_X86_64SysV, // __attribute__((sysv_abi))
- CC_X86RegCall, // __attribute__((regcall))
- CC_AAPCS, // __attribute__((pcs("aapcs")))
- CC_AAPCS_VFP, // __attribute__((pcs("aapcs-vfp")))
- CC_IntelOclBicc, // __attribute__((intel_ocl_bicc))
- CC_SpirFunction, // default for OpenCL functions on SPIR target
- CC_OpenCLKernel, // inferred for OpenCL kernels
- CC_Swift, // __attribute__((swiftcall))
- CC_PreserveMost, // __attribute__((preserve_most))
- CC_PreserveAll, // __attribute__((preserve_all))
+ CC_C, // __attribute__((cdecl))
+ CC_X86StdCall, // __attribute__((stdcall))
+ CC_X86FastCall, // __attribute__((fastcall))
+ CC_X86ThisCall, // __attribute__((thiscall))
+ CC_X86VectorCall, // __attribute__((vectorcall))
+ CC_X86Pascal, // __attribute__((pascal))
+ CC_Win64, // __attribute__((ms_abi))
+ CC_X86_64SysV, // __attribute__((sysv_abi))
+ CC_X86RegCall, // __attribute__((regcall))
+ CC_AAPCS, // __attribute__((pcs("aapcs")))
+ CC_AAPCS_VFP, // __attribute__((pcs("aapcs-vfp")))
+ CC_IntelOclBicc, // __attribute__((intel_ocl_bicc))
+ CC_SpirFunction, // default for OpenCL functions on SPIR target
+ CC_OpenCLKernel, // inferred for OpenCL kernels
+ CC_Swift, // __attribute__((swiftcall))
+ CC_SwiftAsync, // __attribute__((swiftasynccall))
+ CC_PreserveMost, // __attribute__((preserve_most))
+ CC_PreserveAll, // __attribute__((preserve_all))
CC_AArch64VectorCall, // __attribute__((aarch64_vector_pcs))
};
@@ -284,6 +285,7 @@
case CC_SpirFunction:
case CC_OpenCLKernel:
case CC_Swift:
+ case CC_SwiftAsync:
return false;
default:
return true;
Index: clang/include/clang/Basic/DiagnosticSemaKinds.td
===================================================================
--- clang/include/clang/Basic/DiagnosticSemaKinds.td
+++ clang/include/clang/Basic/DiagnosticSemaKinds.td
@@ -3049,7 +3049,8 @@
def note_nsdictionary_duplicate_key_here : Note<
"previous equal key is here">;
def err_swift_param_attr_not_swiftcall : Error<
- "'%0' parameter can only be used with swiftcall calling convention">;
+ "'%0' parameter can only be used with %select{swiftcall|swiftasynccall}1 "
+ "calling convention">;
def err_swift_indirect_result_not_first : Error<
"'swift_indirect_result' parameters must be first parameters of function">;
def err_swift_error_result_not_after_swift_context : Error<
Index: clang/include/clang/Basic/AttrDocs.td
===================================================================
--- clang/include/clang/Basic/AttrDocs.td
+++ clang/include/clang/Basic/AttrDocs.td
@@ -4392,11 +4392,35 @@
}];
}
+def SwiftAsyncCallDocs : Documentation {
+ let Category = DocCatVariable;
+ let Content = [{
+The ``swiftasynccall`` attribute indicates that a function is
+compatible with the low-level conventions of Swift async functions,
+provided it declares the right formal arguments.
+
+In most respects, this is similar to the ``swiftcall`` attribute, except for
+the following:
+- A parameter may be marked ``swift_async_context``, but the parameter
+ attributes ``swift_context``, ``swift_error_result`` and
+ ``swift_indirect_result`` are not permitted.
+- A ``swiftasynccall`` function must have return type ``void``.
+- Within a ``swiftasynccall`` function, a call to a ``swiftasynccall``
+ function that is the immediate operand of a ``return`` statement is
+ guaranteed to be performed as a tail call. This syntax is allowed even
+ in C as an extension (a call to a void-returning function cannot be a
+ return operand in standard C). If something in the calling function would
+ semantically be performed after a guaranteed tail call, such as the
+ non-trivial destruction of a local variable or temporary,
+ then the program is ill-formed.
+ }];
+}
+
def SwiftAsyncContextDocs : Documentation {
let Category = DocCatVariable;
let Content = [{
-The ``swift_async_context`` attribute marks a parameter as having the
-special asynchronous context-parameter ABI treatment.
+The ``swift_async_context`` attribute marks a parameter of a ``swiftasynccall``
+function as having the special asynchronous context-parameter ABI treatment.
This treatment generally passes the context value in a special register
which is normally callee-preserved.
Index: clang/include/clang/Basic/Attr.td
===================================================================
--- clang/include/clang/Basic/Attr.td
+++ clang/include/clang/Basic/Attr.td
@@ -2374,6 +2374,11 @@
let Documentation = [SwiftCallDocs];
}
+def SwiftAsyncCall : DeclOrTypeAttr {
+ let Spellings = [Clang<"swiftasynccall">];
+ let Documentation = [SwiftAsyncCallDocs];
+}
+
def SwiftContext : ParameterABIAttr {
let Spellings = [Clang<"swift_context">];
let Documentation = [SwiftContextDocs];
Index: clang/include/clang-c/Index.h
===================================================================
--- clang/include/clang-c/Index.h
+++ clang/include/clang-c/Index.h
@@ -33,7 +33,7 @@
* compatible, thus CINDEX_VERSION_MAJOR is expected to remain stable.
*/
#define CINDEX_VERSION_MAJOR 0
-#define CINDEX_VERSION_MINOR 61
+#define CINDEX_VERSION_MINOR 62
#define CINDEX_VERSION_ENCODE(major, minor) (((major)*10000) + ((minor)*1))
@@ -3394,6 +3394,7 @@
CXCallingConv_PreserveMost = 14,
CXCallingConv_PreserveAll = 15,
CXCallingConv_AArch64VectorCall = 16,
+ CXCallingConv_SwiftAsync = 17,
CXCallingConv_Invalid = 100,
CXCallingConv_Unexposed = 200
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