llvm-project

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// RUN: %clang_cc1 -triple x86_64-apple-darwin10 -emit-llvm -fobjc-runtime-has-weak -fblocks -fobjc-arc -o - %s | FileCheck %s
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// A test to ensure that we generate fused calls at -O0.
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@class Test0;
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Test0 *test0(void) {
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  extern Test0 *test0_helper;
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  return test0_helper;
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  // CHECK:      [[LD:%.*]] = load ptr, ptr @test0_helper
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  // CHECK-NEXT: [[T1:%.*]] = tail call ptr @llvm.objc.retainAutoreleaseReturnValue(ptr [[LD]])
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  // CHECK-NEXT: ret ptr [[T1]]
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}
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id test1(void) {
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  extern id test1_helper;
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  return test1_helper;
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  // CHECK:      [[LD:%.*]] = load ptr, ptr @test1_helper
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  // CHECK-NEXT: [[T0:%.*]] = tail call ptr @llvm.objc.retainAutoreleaseReturnValue(ptr [[LD]])
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  // CHECK-NEXT: ret ptr [[T0]]
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}
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void test2(void) {
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  // CHECK:      [[X:%.*]] = alloca ptr
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  // CHECK-NEXT: store ptr null, ptr [[X]]
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  // CHECK-NEXT: call void @llvm.objc.destroyWeak(ptr [[X]])
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  // CHECK-NEXT: ret void
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  __weak id x;
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}
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id test3(void) {
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  extern id test3_helper(void);
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  // CHECK:      [[T0:%.*]] = call ptr @test3_helper()
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  // CHECK-NEXT: ret ptr [[T0]]
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  return test3_helper();
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}
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@interface Test4 { id x; } @end
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@interface Test4_sub : Test4 { id y; } @end
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Test4 *test4(void) {
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  extern Test4_sub *test4_helper(void);
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  // CHECK:      [[T0:%.*]] = call ptr @test4_helper()
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  // CHECK-NEXT: ret ptr [[T0]]
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  return test4_helper();
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}
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@class Test5;
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void test5(void) {
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  Test5 *x, *y;
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  if ((x = y))
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    y = 0;
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// CHECK-LABEL:    define{{.*}} void @test5()
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// CHECK:      [[X:%.*]] = alloca ptr,
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// CHECK-NEXT: [[Y:%.*]] = alloca ptr,
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// CHECK-NEXT: store ptr null, ptr [[X]],
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// CHECK-NEXT: store ptr null, ptr [[Y]],
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// CHECK-NEXT: [[T0:%.*]] = load ptr, ptr [[Y]],
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// CHECK-NEXT: call void @llvm.objc.storeStrong(ptr [[X]], ptr [[T0]])
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// CHECK-NEXT: [[T3:%.*]] = icmp ne ptr [[T0]], null
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// CHECK-NEXT: br i1 [[T3]],
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}
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