forked from OSchip/llvm-project
40 lines
1.1 KiB
C++
40 lines
1.1 KiB
C++
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// RUN: %clang -S -emit-llvm -O1 -mllvm -disable-llvm-optzns -S %s -o - | FileCheck %s
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// This test should not to generate llvm.lifetime.start/llvm.lifetime.end for
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// f function because all temporary objects in this function are used for the
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// final result
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class S {
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char *ptr;
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unsigned int len;
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};
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class T {
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S left;
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S right;
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public:
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T(const char s[]);
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T(S);
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T concat(const T &Suffix) const;
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const char * str() const;
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};
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const char * f(S s)
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{
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// CHECK: %1 = alloca %class.T, align 4
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// CHECK: %2 = alloca %class.T, align 4
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// CHECK: %3 = alloca %class.S, align 4
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// CHECK: %4 = alloca %class.T, align 4
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// CHECK: %5 = call x86_thiscallcc %class.T* @"\01??0T@@QAE@QBD@Z"
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// CHECK: %6 = bitcast %class.S* %3 to i8*
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// CHECK: %7 = bitcast %class.S* %s to i8*
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// CHECK: call void @llvm.memcpy.p0i8.p0i8.i32
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// CHECK: %8 = call x86_thiscallcc %class.T* @"\01??0T@@QAE@VS@@@Z"
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// CHECK: call x86_thiscallcc void @"\01?concat@T@@QBE?AV1@ABV1@@Z"
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// CHECK: %9 = call x86_thiscallcc i8* @"\01?str@T@@QBEPBDXZ"(%class.T* %4)
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return T("[").concat(T(s)).str();
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}
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