NeXT: Clean up dispatch method policy selection.

 - Replace -cc1 level -fobjc-legacy-dispatch with -fobjc-dispatch-method={legacy,non-legacy,mixed}.

 - Lift "mixed" vs "non-mixed" policy choice up to driver level, instead of being buried in CGObjCMac.cpp.

 - No intended functionality change.

llvm-svn: 102255

1 files changed, 73 insertions, 0 deletions

diff --git a/clang/test/CodeGenObjC/next-objc-dispatch.m b/clang/test/CodeGenObjC/next-objc-dispatch.m
new file mode 100644
index 00000000000..a3e8e19641e
--- /dev/null
+++ b/clang/test/CodeGenObjC/next-objc-dispatch.m
@@ -0,0 +1,73 @@
+// RUN: %clang_cc1 -triple x86_64-apple-darwin9 -emit-llvm -o - %s \
+// RUN:   -fobjc-dispatch-method=legacy | \
+// RUN:   FileCheck -check-prefix CHECK-FRAGILE_LEGACY %s
+//
+// RUN: %clang_cc1 -triple x86_64-apple-darwin9 -emit-llvm -o - %s    \
+// RUN:   -fobjc-nonfragile-abi -fobjc-dispatch-method=legacy | \
+// RUN:   FileCheck -check-prefix CHECK-NONFRAGILE_LEGACY %s
+//
+// RUN: %clang_cc1 -triple x86_64-apple-darwin9 -emit-llvm -o - %s    \
+// RUN:   -fobjc-nonfragile-abi -fobjc-dispatch-method=non-legacy | \
+// RUN:   FileCheck -check-prefix CHECK-NONFRAGILE_NONLEGACY %s
+//
+// RUN: %clang_cc1 -triple x86_64-apple-darwin9 -emit-llvm -o - %s    \
+// RUN:   -fobjc-nonfragile-abi -fobjc-dispatch-method=mixed | \
+// RUN:   FileCheck -check-prefix CHECK-NONFRAGILE_MIXED %s
+//
+// <rdar://problem/7866951>
+
+// There are basically four ways that we end up doing message dispatch for the
+// NeXT runtime. They are:
+//  (1) fragile ABI, legacy dispatch
+//  (2) non-fragile ABI, legacy dispatch
+//  (2) non-fragile ABI, non-legacy dispatch
+//  (2) non-fragile ABI, mixed dispatch
+//
+// Note that fragile ABI and non-fragile ABI legacy dispatch are not the same,
+// they use some different API calls (objc_msgSendSuper vs objc_msgSendSuper2).
+
+// CHECK-FRAGILE_LEGACY: ModuleID
+// CHECK-FRAGILE_LEGACY-NOT: declare i8* @objc_msgSendSuper2_fixup(
+// CHECK-FRAGILE_LEGACY-NOT: declare i8* @objc_msgSend_fixup(
+// CHECK-FRAGILE_LEGACY: declare i8* @objc_msgSendSuper(
+// CHECK-FRAGILE_LEGACY: declare i8* @objc_msgSend(
+
+// CHECK-NONFRAGILE_LEGACY: ModuleID
+// CHECK-NONFRAGILE_LEGACY-NOT: declare i8* @objc_msgSendSuper2_fixup(
+// CHECK-NONFRAGILE_LEGACY-NOT: declare i8* @objc_msgSend_fixup(
+// CHECK-NONFRAGILE_LEGACY: declare i8* @objc_msgSendSuper2(
+// CHECK-NONFRAGILE_LEGACY: declare i8* @objc_msgSend(
+
+// CHECK-NONFRAGILE_NONLEGACY: ModuleID
+// CHECK-NONFRAGILE_NONLEGACY: declare i8* @objc_msgSendSuper2_fixup(
+// CHECK-NONFRAGILE_NONLEGACY: declare i8* @objc_msgSend_fixup(
+
+// CHECK-NONFRAGILE_MIXED: declare i8* @objc_msgSendSuper2_fixup(
+// CHECK-NONFRAGILE_MIXED: declare i8* @objc_msgSendSuper2(
+// CHECK-NONFRAGILE_MIXED: declare i8* @objc_msgSend_fixup(
+// CHECK-NONFRAGILE_MIXED: declare i8* @objc_msgSend(
+
+@interface NSObject
++ (id)alloc;
+- (id)init;
+@end
+
+@interface I0 : NSObject
+-(void) im0;
+@end
+
+@implementation I0
++(id) alloc {
+  return [super alloc];
+}
+-(id) init {
+ [super init];
+ return self;
+}
+-(void) im0 {}
+@end
+
+void f0(I0 *a) {
+  [I0 alloc];
+  [a im0];
+}