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authorAlexey Samsonov <samsonov@google.com>2012-05-04 07:39:27 +0000
committerAlexey Samsonov <samsonov@google.com>2012-05-04 07:39:27 +0000
commit74a3868dbba7f8b82fd2985a009713b239d237a9 (patch)
treea7fed5d515bab70dd166e15d5488142c1be2b18f /clang/test/CodeGen/debug-info-gline-tables-only.c
parentbdd2e34b1fcb1e69abeb075b18335a9dcefaf015 (diff)
downloadbcm5719-llvm-74a3868dbba7f8b82fd2985a009713b239d237a9.tar.gz
bcm5719-llvm-74a3868dbba7f8b82fd2985a009713b239d237a9.zip
This patch adds a new Clang compiler flag "-gline-tables-only".
It reduces the amount of emitted debug information: 1) DIEs in .debug_info have types DW_TAG_compile_unit, DW_TAG_subprogram, DW_TAG_inlined_subroutine (for opt builds) and DW_TAG_lexical_block only. 2) .debug_str contains only function names. 3) No debug data for types/namespaces/variables is emitted. 4) The data in .debug_line is enough to produce valid stack traces with function names and line numbers. Reviewed by Eric Christopher. llvm-svn: 156160
Diffstat (limited to 'clang/test/CodeGen/debug-info-gline-tables-only.c')
-rw-r--r--clang/test/CodeGen/debug-info-gline-tables-only.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/clang/test/CodeGen/debug-info-gline-tables-only.c b/clang/test/CodeGen/debug-info-gline-tables-only.c
new file mode 100644
index 00000000000..067d8e77218
--- /dev/null
+++ b/clang/test/CodeGen/debug-info-gline-tables-only.c
@@ -0,0 +1,33 @@
+// RUN: %clang_cc1 %s -gline-tables-only -S -emit-llvm -o - | FileCheck %s
+// Checks that clang with "-gline-tables-only" doesn't emit debug info
+// for variables and types.
+
+// CHECK-NOT: DW_TAG_variable
+int global = 42;
+
+// CHECK-NOT: DW_TAG_typedef
+// CHECK-NOT: DW_TAG_const_type
+// CHECK-NOT: DW_TAG_pointer_type
+// CHECK-NOT: DW_TAG_array_type
+typedef const char* constCharPtrArray[10];
+
+// CHECK-NOT: DW_TAG_structure_type
+struct S {
+ // CHECK-NOT: DW_TAG_member
+ char a;
+ double b;
+ constCharPtrArray c;
+};
+
+// CHECK-NOT: DW_TAG_enumerator
+// CHECK-NOT: DW_TAG_enumeration_type
+enum E { ZERO = 0, ONE = 1 };
+
+// CHECK-NOT: DW_TAG_arg_variable
+int sum(int p, int q) {
+ // CHECK-NOT: DW_TAG_auto_variable
+ int r = p + q;
+ struct S s;
+ enum E e;
+ return r;
+}
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