1 // When entry values are emitted, expect a subprogram for extern decls so that 2 // the dwarf generator can describe call site parameters at extern call sites. 3 // 4 // Initial implementation relied on the 'retainedTypes:' from the corresponding 5 // DICompileUnit, so we also ensure that we do not store the extern declaration 6 // subprogram into the 'retainedTypes:'. 7 // 8 // RUN: %clang -g -O2 -target x86_64-none-linux-gnu -S -emit-llvm %s -o - \ 9 // RUN: | FileCheck %s -check-prefix=DECLS-FOR-EXTERN 10 11 // Similarly, when the debugger tuning is gdb, expect a subprogram for extern 12 // decls so that the dwarf generator can describe information needed for tail 13 // call frame reconstrution. 14 // 15 // RUN: %clang -g -O2 -target x86_64-none-linux-gnu -ggdb -S -emit-llvm %s -o - \ 16 // RUN: | FileCheck %s -check-prefix=DECLS-FOR-EXTERN 17 // 18 // Do not emit a subprogram for extern decls when entry values are disabled and 19 // the tuning is not set to gdb. 20 // 21 // RUN: %clang -g -O2 -target x86_64-none-linux-gnu -gsce -S -emit-llvm %s -o - \ 22 // RUN: | FileCheck %s -check-prefix=NO-DECLS-FOR-EXTERN 23 24 // DECLS-FOR-EXTERN-NOT: !DICompileUnit({{.*}}retainedTypes: ![[RETTYPES:[0-9]+]] 25 // DECLS-FOR-EXTERN-NOT: ![[RETTYPES]] = !{ 26 // DECLS-FOR-EXTERN: !DISubprogram(name: "fn1" 27 // DECLS-FOR-EXTERN-NOT: !DISubprogram(name: "memcmp" 28 // DECLS-FOR-EXTERN-NOT: !DISubprogram(name: "__some_reserved_name" 29 30 // NO-DECLS-FOR-EXTERN-NOT: !DISubprogram(name: "fn1" 31 // NO-DECLS-FOR-EXTERN-NOT: !DISubprogram(name: "memcmp" 32 // NO-DECLS-FOR-EXTERN-NOT: !DISubprogram(name: "__some_reserved_name" 33 34 extern int fn1(int a, int b); 35 extern int memcmp(const void *s1, const void *s2, unsigned long n); 36 extern void __some_reserved_name(void); 37 38 int fn2 (int *src, int *dst) { 39 int x = 4, y = 5; 40 int res = fn1(x, y); 41 int res2 = memcmp(dst, src, res); 42 __some_reserved_name(); 43 return res + res2; 44 } 45 46