derek.holloway
7502bf64a4
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53 lines
1.8 KiB
C++
53 lines
1.8 KiB
C++
// RUN: %clang_cc1 -Wno-non-pod-varargs -emit-llvm %s -o - -triple=i686-pc-win32 -mconstructor-aliases -fno-rtti | FileCheck %s
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#include <stdarg.h>
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struct A {
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A(int a) : a(a) {}
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A(const A &o) : a(o.a) {}
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~A() {}
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int a;
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};
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int foo(A a, ...) {
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va_list ap;
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va_start(ap, a);
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int sum = 0;
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for (int i = 0; i < a.a; ++i)
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sum += va_arg(ap, int);
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va_end(ap);
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return sum;
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}
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// CHECK-LABEL: define dso_local noundef i32 @"?foo@@YAHUA@@ZZ"(ptr inalloca(<{ %struct.A }>) %0, ...)
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int main() {
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return foo(A(3), 1, 2, 3);
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}
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// CHECK-LABEL: define dso_local noundef i32 @main()
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// CHECK: %[[argmem:[^ ]*]] = alloca inalloca <{ %struct.A, i32, i32, i32 }>
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// CHECK: call noundef i32 (ptr, ...) @"?foo@@YAHUA@@ZZ"{{.*}}(ptr inalloca(<{ %struct.A, i32, i32, i32 }>) %[[argmem]])
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void varargs_zero(...);
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void varargs_one(int, ...);
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void varargs_two(int, int, ...);
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void varargs_three(int, int, int, ...);
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void call_var_args() {
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A x(3);
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varargs_zero(x);
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varargs_one(1, x);
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varargs_two(1, 2, x);
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varargs_three(1, 2, 3, x);
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}
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// CHECK-LABEL: define dso_local void @"?call_var_args@@YAXXZ"()
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// CHECK: call void {{.*varargs_zero.*}}(ptr inalloca(<{ %struct.A }>) %{{.*}})
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// CHECK: call void {{.*varargs_one.*}}(ptr inalloca(<{ i32, %struct.A }>) %{{.*}})
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// CHECK: call void {{.*varargs_two.*}}(ptr inalloca(<{ i32, i32, %struct.A }>) %{{.*}})
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// CHECK: call void {{.*varargs_three.*}}(ptr inalloca(<{ i32, i32, i32, %struct.A }>) %{{.*}})
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// CHECK-LABEL: declare dso_local void @"?varargs_zero@@YAXZZ"(...)
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// CHECK-LABEL: declare dso_local void @"?varargs_one@@YAXHZZ"(i32 noundef, ...)
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// CHECK-LABEL: declare dso_local void @"?varargs_two@@YAXHHZZ"(i32 noundef, i32 noundef, ...)
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// CHECK-LABEL: declare dso_local void @"?varargs_three@@YAXHHHZZ"(i32 noundef, i32 noundef, i32 noundef, ...)
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