derek.holloway
7502bf64a4
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37 lines
2.2 KiB
C++
37 lines
2.2 KiB
C++
// RUN: %clang_cc1 -std=c++98 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s --check-prefixes CHECK
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// RUN: %clang_cc1 -std=c++11 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s --check-prefixes CHECK
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// RUN: %clang_cc1 -std=c++14 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s --check-prefixes CHECK
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// RUN: %clang_cc1 -std=c++17 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s --check-prefixes CHECK
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// RUN: %clang_cc1 -std=c++20 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s --check-prefixes CHECK
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// RUN: %clang_cc1 -std=c++23 %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s --check-prefixes CHECK
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// RUN: %clang_cc1 -std=c++2c %s -triple x86_64-linux-gnu -emit-llvm -o - -fexceptions -fcxx-exceptions -pedantic-errors | llvm-cxxfilt -n | FileCheck %s --check-prefixes CHECK
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namespace cwg519 { // cwg519: 2.7
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void f() {
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int *a = 0;
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void *v = a;
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bool c1 = v == static_cast<void *>(0);
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void *w = 0;
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int *b = static_cast<int*>(w);
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bool c2 = b == static_cast<int *>(0);
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}
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} // namespace cwg519
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// We're checking that `null`s that were initially stored in `a` and `w`
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// are simply copied over all the way to respective comparisons with `null`.
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// CHECK-LABEL: define {{.*}} void @cwg519::f()()
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// CHECK: store ptr null, ptr [[A:%.+]],
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// CHECK-NEXT: [[TEMP_A:%.+]] = load ptr, ptr [[A]]
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// CHECK-NEXT: store ptr [[TEMP_A]], ptr [[V:%.+]],
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// CHECK-NEXT: [[TEMP_V:%.+]] = load ptr, ptr [[V]]
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// CHECK-NEXT: {{.+}} = icmp eq ptr [[TEMP_V]], null
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// CHECK: store ptr null, ptr [[W:%.+]],
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// CHECK-NEXT: [[TEMP_W:%.+]] = load ptr, ptr [[W]]
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// CHECK-NEXT: store ptr [[TEMP_W]], ptr [[B:%.+]],
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// CHECK-NEXT: [[TEMP_B:%.+]] = load ptr, ptr [[B]]
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// CHECK-NEXT: {{.+}} = icmp eq ptr [[TEMP_B]], null
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// CHECK-LABEL: }
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