derek.holloway
7502bf64a4
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30 lines
1022 B
C++
30 lines
1022 B
C++
// RUN: %clang_cc1 -triple i686-pc-linux-gnu -emit-llvm -o %t-1.ll %s
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// RUN: FileCheck --check-prefix=ALL -check-prefix SANE --input-file=%t-1.ll %s
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// RUN: %clang_cc1 -triple i686-pc-linux-gnu -emit-llvm -fno-assume-sane-operator-new -o %t-2.ll %s
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// RUN: FileCheck --check-prefix=ALL -check-prefix SANENOT --input-file=%t-2.ll %s
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class teste {
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int A;
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public:
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teste() : A(2) {}
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};
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void f1() {
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// ALL: declare noundef nonnull ptr @_Znwj(
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new teste();
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}
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// operator new should check for overflow in multiply.
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void *f2(long N) {
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return new int[N];
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// ALL: [[UWO:%.*]] = call {{.*}} @llvm.umul.with.overflow
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// ALL-NEXT: [[OVER:%.*]] = extractvalue {{.*}} [[UWO]], 1
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// ALL-NEXT: [[SUM:%.*]] = extractvalue {{.*}} [[UWO]], 0
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// ALL-NEXT: [[RESULT:%.*]] = select i1 [[OVER]], i32 -1, i32 [[SUM]]
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// SANE-NEXT: call noalias noundef nonnull ptr @_Znaj(i32 noundef [[RESULT]])
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// SANENOT-NEXT: call noundef nonnull ptr @_Znaj(i32 noundef [[RESULT]])
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}
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// ALL: declare noundef nonnull ptr @_Znaj(
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