[DEBUGINFO] Add support for emission of the debug directives only.

Summary:
Added option -gline-directives-only to support emission of the debug directives
only. It behaves very similar to -gline-tables-only, except that it sets
llvm debug info emission kind to
llvm::DICompileUnit::DebugDirectivesOnly.

Reviewers: echristo

Subscribers: aprantl, fedor.sergeev, JDevlieghere, cfe-commits

Differential Revision: https://reviews.llvm.org/D51177

llvm-svn: 341212

7 files changed, 9 insertions, 2 deletions

diff --git a/clang/test/CodeGen/debug-info-gline-tables-only.c b/clang/test/CodeGen/debug-info-gline-tables-only.c
index e890dbb0da2..6f832be8287 100644
--- a/clang/test/CodeGen/debug-info-gline-tables-only.c
+++ b/clang/test/CodeGen/debug-info-gline-tables-only.c
@@ -1,5 +1,6 @@
 // RUN: %clang_cc1 %s -debug-info-kind=line-tables-only -S -emit-llvm -o - | FileCheck %s
-// Checks that clang with "-gline-tables-only" doesn't emit debug info
+// RUN: %clang_cc1 %s -debug-info-kind=line-directives-only -S -emit-llvm -o - | FileCheck %s
+// Checks that clang with "-gline-tables-only" or "-gline-directives-only" doesn't emit debug info
 // for variables and types.
 
 // CHECK-NOT: DW_TAG_variable
diff --git a/clang/test/CodeGen/debug-info-gline-tables-only2.c b/clang/test/CodeGen/debug-info-gline-tables-only2.c
index da17d41f3b1..8b8fbc2fe00 100644
--- a/clang/test/CodeGen/debug-info-gline-tables-only2.c
+++ b/clang/test/CodeGen/debug-info-gline-tables-only2.c
@@ -1,5 +1,6 @@
 // RUN: %clang_cc1 %s -debug-info-kind=line-tables-only -S -emit-llvm -o - | FileCheck %s
-// Checks that clang with "-gline-tables-only" emits metadata for
+// RUN: %clang_cc1 %s -debug-info-kind=line-directives-only -S -emit-llvm -o - | FileCheck %s
+// Checks that clang with "-gline-tables-only" or "-gline-directives-only" emits metadata for
 // compile unit, subprogram and file.
 
 int main() {
diff --git a/clang/test/CodeGen/debug-info-line.c b/clang/test/CodeGen/debug-info-line.c
index 24981b54b7e..39595d148c1 100644
--- a/clang/test/CodeGen/debug-info-line.c
+++ b/clang/test/CodeGen/debug-info-line.c
@@ -1,4 +1,5 @@
 // RUN: %clang_cc1 -w -debug-info-kind=line-tables-only -fexceptions -fcxx-exceptions -S -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -w -debug-info-kind=line-directives-only -fexceptions -fcxx-exceptions -S -emit-llvm %s -o - | FileCheck %s
 
 int f1(int a, int b) {
   // CHECK: icmp {{.*}}, !dbg [[DBG_F1:!.*]]
diff --git a/clang/test/CodeGen/debug-info-macro.c b/clang/test/CodeGen/debug-info-macro.c
index 7f7358d04bd..6294d43753f 100644
--- a/clang/test/CodeGen/debug-info-macro.c
+++ b/clang/test/CodeGen/debug-info-macro.c
@@ -1,4 +1,5 @@
 // RUN: %clang_cc1 -emit-llvm -debug-info-kind=line-tables-only -debug-info-macro %s -o - "-DC1(x)=( x  + 5 )" -DA -include %S/Inputs/debug-info-macro.h -UC1 | FileCheck -check-prefixes=CHECK,NO_PCH %s 
+// RUN: %clang_cc1 -emit-llvm -debug-info-kind=line-directives-only -debug-info-macro %s -o - "-DC1(x)=( x  + 5 )" -DA -include %S/Inputs/debug-info-macro.h -UC1 | FileCheck -check-prefixes=CHECK,NO_PCH %s 
 // RUN: %clang_cc1 -emit-llvm -debug-info-kind=limited          -debug-info-macro %s -o - "-DC1(x)=( x  + 5 )" -DA -include %S/Inputs/debug-info-macro.h -UC1 | FileCheck -check-prefixes=CHECK,NO_PCH %s 
 // RUN: %clang_cc1 -emit-llvm -debug-info-kind=standalone       -debug-info-macro %s -o - "-DC1(x)=( x  + 5 )" -DA -include %S/Inputs/debug-info-macro.h -UC1 | FileCheck -check-prefixes=CHECK,NO_PCH %s 
 // RUN: %clang_cc1 -emit-llvm                                   -debug-info-macro %s -o - "-DC1(x)=( x  + 5 )" -DA -include %S/Inputs/debug-info-macro.h -UC1 | FileCheck -check-prefixes=NO_MACRO %s 
diff --git a/clang/test/CodeGen/debug-info-scope.c b/clang/test/CodeGen/debug-info-scope.c
index a25f1177a91..0c12c4d6046 100644
--- a/clang/test/CodeGen/debug-info-scope.c
+++ b/clang/test/CodeGen/debug-info-scope.c
@@ -1,5 +1,6 @@
 // RUN: %clang_cc1 -dwarf-version=4 -debug-info-kind=limited -disable-llvm-passes -emit-llvm < %s | FileCheck %s
 // RUN: %clang_cc1 -dwarf-version=4 -debug-info-kind=line-tables-only -disable-llvm-passes -emit-llvm < %s | FileCheck --check-prefix=GMLT %s
+// RUN: %clang_cc1 -dwarf-version=4 -debug-info-kind=line-directives-only -disable-llvm-passes -emit-llvm < %s | FileCheck --check-prefix=GMLT %s
 // Two variables with same name in separate scope.
 // Radar 8330217.
 int main() {
diff --git a/clang/test/CodeGen/lifetime-debuginfo-1.c b/clang/test/CodeGen/lifetime-debuginfo-1.c
index e2e45cb7f81..10fd2c21644 100644
--- a/clang/test/CodeGen/lifetime-debuginfo-1.c
+++ b/clang/test/CodeGen/lifetime-debuginfo-1.c
@@ -1,4 +1,5 @@
 // RUN: %clang_cc1 -O1 -triple x86_64-none-linux-gnu -emit-llvm -debug-info-kind=line-tables-only %s -o - | FileCheck %s
+// RUN: %clang_cc1 -O1 -triple x86_64-none-linux-gnu -emit-llvm -debug-info-kind=line-directives-only %s -o - | FileCheck %s
 
 // Inserting lifetime markers should not affect debuginfo
 
diff --git a/clang/test/CodeGen/lifetime-debuginfo-2.c b/clang/test/CodeGen/lifetime-debuginfo-2.c
index 1d2fb595769..a2e06519358 100644
--- a/clang/test/CodeGen/lifetime-debuginfo-2.c
+++ b/clang/test/CodeGen/lifetime-debuginfo-2.c
@@ -1,4 +1,5 @@
 // RUN: %clang_cc1 -O1 -triple x86_64-none-linux-gnu -emit-llvm -debug-info-kind=line-tables-only %s -o - | FileCheck %s
+// RUN: %clang_cc1 -O1 -triple x86_64-none-linux-gnu -emit-llvm -debug-info-kind=line-directives-only %s -o - | FileCheck %s
 
 // Inserting lifetime markers should not affect debuginfo: lifetime.end is not
 // a destructor, but instrumentation for the compiler. Ensure the debug info for