llvm-project/clang/test/CodeGenCXX/debug-info-same-line.cpp

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// RUN: %clang_cc1 -g -emit-llvm -o - %s | FileCheck %s
// Make sure that clang outputs distinct debug info for a function
// that is inlined twice on the same line. Otherwise it would appear
// as if the function was only inlined once.
#define INLINE inline __attribute__((always_inline))
INLINE int
product (int x, int y)
{
int result = x * y;
return result;
}
INLINE int
sum (int a, int b)
{
int result = a + b;
return result;
}
int
strange_max (int m, int n)
{
if (m > n)
return m;
else if (n > m)
return n;
else
return 0;
}
int
foo (int i, int j)
{
if (strange_max (i, j) == i)
return product (i, j);
else if (strange_max (i, j) == j)
return sum (i, j);
else
return product (sum (i, i), sum (j, j));
}
int
main(int argc, char const *argv[])
{
int array[3];
int n;
array[0] = foo (1238, 78392);
array[1] = foo (379265, 23674);
array[2] = foo (872934, 234);
n = strange_max(array[0], strange_max(array[1], array[2]));
return n & 0xf;
}
// CHECK: define {{.*}} @_Z3fooii
// i
// CHECK: call void @llvm.dbg.declare
// j
// CHECK: call void @llvm.dbg.declare
// x
// CHECK: call void @llvm.dbg.declare
// y
// CHECK: call void @llvm.dbg.declare
// result
// CHECK: call void @llvm.dbg.declare
// CHECK: call void @llvm.dbg.declare(metadata !{i32* %{{.*}}}, metadata ![[A_MD:[0-9]+]]), !dbg ![[A_DI:[0-9]+]]
// CHECK: call void @llvm.dbg.declare(metadata !{i32* %{{.*}}}, metadata ![[B_MD:[0-9]+]]), !dbg ![[B_DI:[0-9]+]]
// result
// CHECK: call void @llvm.dbg.declare
// We want to see a distinct !dbg node.
// CHECK-NOT: call void @llvm.dbg.declare(metadata !{i32* %{{.*}}}, metadata ![[A_MD]]), !dbg ![[A_DI]]
// CHECK: call void @llvm.dbg.declare(metadata !{i32* %{{.*}}}, metadata ![[A_MD]]), !dbg !{{.*}}
// CHECK-NOT: call void @llvm.dbg.declare(metadata !{i32* %{{.*}}}, metadata ![[B_MD]]), !dbg ![[B_DI]]
// CHECK: call void @llvm.dbg.declare(metadata !{i32* %{{.*}}}, metadata ![[B_MD]]), !dbg !{{.*}}
// result
// CHECK: call void @llvm.dbg.declare
// We want to see a distinct !dbg node.
// CHECK-NOT: call void @llvm.dbg.declare(metadata !{i32* %{{.*}}}, metadata ![[A_MD]]), !dbg ![[A_DI]]
// CHECK: call void @llvm.dbg.declare(metadata !{i32* %{{.*}}}, metadata ![[A_MD]]), !dbg !{{.*}}
// CHECK-NOT: call void @llvm.dbg.declare(metadata !{i32* %{{.*}}}, metadata ![[B_MD]]), !dbg ![[B_DI]]
// CHECK: call void @llvm.dbg.declare(metadata !{i32* %{{.*}}}, metadata ![[B_MD]]), !dbg !{{.*}}
// result
// CHECK: call void @llvm.dbg.declare
// Again: we want to see a distinct !dbg node.
// CHECK: call void @llvm.dbg.declare(metadata !{i32* %{{.*}}}, metadata ![[X_MD:[0-9]+]]), !dbg ![[X_DI:[0-9]+]]
// CHECK: call void @llvm.dbg.declare(metadata !{i32* %{{.*}}}, metadata ![[Y_MD:[0-9]+]]), !dbg ![[Y_DI:[0-9]+]]
// result
// CHECK: call void @llvm.dbg.declare
// CHECK: define {{.*}} @main
// CHECK: call {{.*}} @_Z3fooii
// CHECK: call {{.*}} @_Z3fooii
// CHECK: call {{.*}} @_Z3fooii
// CHECK: store
// CHECK: getelementptr
// We want to see the same !dbg node for non-inlined functions.
// Needed for GDB compatibility.
// CHECK: load {{.*}} !dbg ![[DBG:.*]]
// CHECK: load {{.*}} !dbg ![[DBG]]
// CHECK: load {{.*}} !dbg ![[DBG]]
// CHECK: call {{.*}} @_Z11strange_maxii(i32 {{.*}}, i32 {{.*}}), !dbg ![[DBG]]
// CHECK: call {{.*}} @_Z11strange_maxii(i32 {{.*}}, i32 {{.*}}), !dbg ![[DBG]]
// Verify that product() has its own inlined_at location at column 15.
// CHECK-DAG: ![[A_MD]] = metadata{{.*}}[ DW_TAG_arg_variable ] [a]
// CHECK-DAG: ![[B_MD]] = metadata{{.*}}[ DW_TAG_arg_variable ] [b]
// CHECK-DAG: ![[X_MD]] = metadata{{.*}}[ DW_TAG_arg_variable ] [x]
// CHECK-DAG: ![[Y_MD]] = metadata{{.*}}[ DW_TAG_arg_variable ] [y]
// CHECK-DAG: ![[X_DI]] = metadata !{i32 {{[0-9]+}}, i32 {{[0-9]+}}, metadata !{{[0-9]+}}, metadata ![[PRODUCT:[0-9]+]]}
// CHECK-DAG: [[PRODUCT]] = metadata !{i32 {{.*}}, i32 16, metadata !{{.*}}, null}
// CHECK-DAG: ![[Y_DI]] = metadata !{i32 {{[0-9]+}}, i32 {{[0-9]+}}, metadata !{{[0-9]+}}, metadata ![[PRODUCT]]}