| // When entry values are emitted, expect a subprogram for extern decls so that |
| // the dwarf generator can describe call site parameters at extern call sites. |
| // |
| // Initial implementation relied on the 'retainedTypes:' from the corresponding |
| // DICompileUnit, so we also ensure that we do not store the extern declaration |
| // subprogram into the 'retainedTypes:'. |
| // |
| // RUN: %clang -g -O2 -target x86_64-none-linux-gnu -S -emit-llvm %s -o - \ |
| // RUN: | FileCheck %s -check-prefix=DECLS-FOR-EXTERN |
| |
| // Similarly, when the debugger tuning is gdb, expect a subprogram for extern |
| // decls so that the dwarf generator can describe information needed for tail |
| // call frame reconstrution. |
| // |
| // RUN: %clang -g -O2 -target x86_64-none-linux-gnu -ggdb -S -emit-llvm %s -o - \ |
| // RUN: | FileCheck %s -check-prefix=DECLS-FOR-EXTERN |
| // |
| // Do not emit a subprogram for extern decls when entry values are disabled and |
| // the tuning is not set to gdb. |
| // |
| // RUN: %clang -g -O2 -target x86_64-none-linux-gnu -gsce -S -emit-llvm %s -o - \ |
| // RUN: | FileCheck %s -check-prefix=NO-DECLS-FOR-EXTERN |
| |
| // DECLS-FOR-EXTERN-NOT: !DICompileUnit({{.*}}retainedTypes: !{{[0-9]+}} |
| // DECLS-FOR-EXTERN: !DISubprogram(name: "fn1" |
| // DECLS-FOR-EXTERN-NOT: !DISubprogram(name: "memcmp" |
| // DECLS-FOR-EXTERN-NOT: !DISubprogram(name: "__some_reserved_name" |
| |
| // NO-DECLS-FOR-EXTERN-NOT: !DISubprogram(name: "fn1" |
| // NO-DECLS-FOR-EXTERN-NOT: !DISubprogram(name: "memcmp" |
| // NO-DECLS-FOR-EXTERN-NOT: !DISubprogram(name: "__some_reserved_name" |
| |
| extern int fn1(int a, int b); |
| extern int memcmp(const void *s1, const void *s2, unsigned long n); |
| extern void __some_reserved_name(void); |
| |
| int fn2 (int *src, int *dst) { |
| int x = 4, y = 5; |
| int res = fn1(x, y); |
| int res2 = memcmp(dst, src, res); |
| __some_reserved_name(); |
| return res + res2; |
| } |
| |
