derek.holloway
7502bf64a4
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42 lines
1.4 KiB
C++
42 lines
1.4 KiB
C++
// RUN: %clang_cc1 -triple x86_64-unknown-unknown -fblocks %s -emit-llvm -o - | FileCheck %s -check-prefix=UNINIT
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -fblocks -ftrivial-auto-var-init=pattern %s -emit-llvm -o - | FileCheck %s -check-prefix=PATTERN
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// RUN: %clang_cc1 -triple x86_64-unknown-unknown -fblocks -ftrivial-auto-var-init=zero %s -emit-llvm -o - | FileCheck %s -check-prefix=ZERO
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template<typename T> void used(T &) noexcept;
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extern "C" {
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// UNINIT-LABEL: test_attribute_uninitialized(
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// UNINIT: alloca
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// UNINIT-NEXT: call void
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// ZERO-LABEL: test_attribute_uninitialized(
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// ZERO: alloca
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// ZERO-NOT: !annotation
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// ZERO-NEXT: call void
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// PATTERN-LABEL: test_attribute_uninitialized(
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// PATTERN: alloca
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// PATTERN-NOT: !annotation
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// PATTERN-NEXT: call void
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void test_attribute_uninitialized() {
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[[clang::uninitialized]] int i;
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used(i);
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}
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#pragma clang attribute push([[clang::uninitialized]], apply_to = variable(is_local))
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// UNINIT-LABEL: test_pragma_attribute_uninitialized(
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// UNINIT: alloca
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// UNINIT-NEXT: call void
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// ZERO-LABEL: test_pragma_attribute_uninitialized(
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// ZERO: alloca
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// ZERO-NEXT: call void
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// PATTERN-LABEL: test_pragma_attribute_uninitialized(
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// PATTERN: alloca
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// PATTERN-NEXT: call void
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void test_pragma_attribute_uninitialized() {
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int i;
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used(i);
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}
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#pragma clang attribute pop
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} // extern "C"
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