Index: include/clang/Driver/CC1Options.td
===================================================================
--- include/clang/Driver/CC1Options.td
+++ include/clang/Driver/CC1Options.td
@@ -226,6 +226,14 @@
   HelpText<"Emit CFG checksum for functions in .gcno files.">;
 def coverage_no_function_names_in_data : Flag<["-"], "coverage-no-function-names-in-data">,
   HelpText<"Emit function names in .gcda files.">;
+def coverage_filter : Separate<["-"], "coverage-filter">,
+  HelpText<"Instrument only functions from files where names match any regex separate by a colon">;
+def coverage_filter_EQ : Joined<["-"], "coverage-filter=">,
+  Alias<coverage_filter>;
+def coverage_exclude : Separate<["-"], "coverage-exclude">,
+  HelpText<"Instrument only functions from files where names don't match all the regex separate by a colon">;
+def coverage_exclude_EQ : Joined<["-"], "coverage-exclude=">,
+  Alias<coverage_exclude>;
 def coverage_exit_block_before_body : Flag<["-"], "coverage-exit-block-before-body">,
   HelpText<"Emit the exit block before the body blocks in .gcno files.">;
 def coverage_version_EQ : Joined<["-"], "coverage-version=">,
Index: include/clang/Frontend/CodeGenOptions.h
===================================================================
--- include/clang/Frontend/CodeGenOptions.h
+++ include/clang/Frontend/CodeGenOptions.h
@@ -125,6 +125,12 @@
   /// The filename with path we use for coverage notes files.
   std::string CoverageNotesFile;
 
+  /// Regex separated by a colon to filter the files to instrument.
+  std::string CoverageFilter;
+
+  /// Regex separated by a colon to filter the files to not instrument.
+  std::string CoverageExclude;
+
   /// The version string to put into coverage files.
   char CoverageVersion[4];
 
Index: lib/CodeGen/BackendUtil.cpp
===================================================================
--- lib/CodeGen/BackendUtil.cpp
+++ lib/CodeGen/BackendUtil.cpp
@@ -503,6 +503,8 @@
   Options.UseCfgChecksum = CodeGenOpts.CoverageExtraChecksum;
   Options.NoRedZone = CodeGenOpts.DisableRedZone;
   Options.FunctionNamesInData = !CodeGenOpts.CoverageNoFunctionNamesInData;
+  Options.Filter = CodeGenOpts.CoverageFilter;
+  Options.Exclude = CodeGenOpts.CoverageExclude;
   Options.ExitBlockBeforeBody = CodeGenOpts.CoverageExitBlockBeforeBody;
   return Options;
 }
Index: lib/Frontend/CompilerInvocation.cpp
===================================================================
--- lib/Frontend/CompilerInvocation.cpp
+++ lib/Frontend/CompilerInvocation.cpp
@@ -801,6 +801,8 @@
     Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
     Opts.CoverageNoFunctionNamesInData =
         Args.hasArg(OPT_coverage_no_function_names_in_data);
+    Opts.CoverageFilter = Args.getLastArgValue(OPT_coverage_filter);
+    Opts.CoverageExclude = Args.getLastArgValue(OPT_coverage_exclude);
     Opts.CoverageExitBlockBeforeBody =
         Args.hasArg(OPT_coverage_exit_block_before_body);
     if (Args.hasArg(OPT_coverage_version_EQ)) {
Index: test/CodeGen/Inputs/code-coverage-filter1.h
===================================================================
--- /dev/null
+++ test/CodeGen/Inputs/code-coverage-filter1.h
@@ -0,0 +1,6 @@
+int test1(int x) {
+    if (x >= 1) {
+        return x + 1;
+    }
+    return x;
+}
Index: test/CodeGen/Inputs/code-coverage-filter2.h
===================================================================
--- /dev/null
+++ test/CodeGen/Inputs/code-coverage-filter2.h
@@ -0,0 +1,6 @@
+int test2(int x) {
+    if (x >= 1) {
+        return x + 1;
+    }
+    return x;
+}
Index: test/CodeGen/code-coverage-filter.c
===================================================================
--- /dev/null
+++ test/CodeGen/code-coverage-filter.c
@@ -0,0 +1,90 @@
+// RUN: %clang_cc1 -emit-llvm -femit-coverage-data %s -o - \
+// RUN:    | FileCheck -check-prefix=ALL %s
+// RUN: %clang_cc1 -emit-llvm -femit-coverage-data -coverage-exclude=.*\\.h %s -o - \
+// RUN:    | FileCheck -check-prefix=NOH %s
+// RUN: %clang_cc1 -emit-llvm -femit-coverage-data -coverage-filter=.*\\.c %s -o - \
+// RUN:    | FileCheck -check-prefix=NOH %s
+// RUN: %clang_cc1 -emit-llvm -femit-coverage-data -coverage-filter=.*\\.c %s -o - \
+// RUN:    | FileCheck -check-prefix=NOH %s
+// RUN: %clang_cc1 -emit-llvm -femit-coverage-data -coverage-filter=.*\\.c:.*1\\.h %s -o - \
+// RUN:    | FileCheck -check-prefix=NOH2 %s
+// RUN: %clang_cc1 -emit-llvm -femit-coverage-data -coverage-exclude=.*2\\.h:.*1\\.h %s -o - \
+// RUN:    | FileCheck -check-prefix=C %s
+// RUN: %clang_cc1 -emit-llvm -femit-coverage-data -coverage-exclude=.*code\\-coverage\\-filter\\.c %s -o - \
+// RUN:    | FileCheck -check-prefix=H %s
+// RUN: %clang_cc1 -emit-llvm -femit-coverage-data -coverage-filter=.*\\.c -coverage-exclude=.*\\.c %s -o - \
+// RUN:    | FileCheck -check-prefix=NONE %s
+// RUN: %clang_cc1 -emit-llvm -femit-coverage-data -coverage-filter=.*\\.c -coverage-exclude=.*\\.h %s -o - \
+// RUN:    | FileCheck -check-prefix=C %s
+
+#include "Inputs/code-coverage-filter1.h"
+#include "Inputs/code-coverage-filter2.h"
+
+int test(int a) {
+    int x = 0;
+    if (a == 1) {
+        x = test1(a) + test2(a);
+    }
+
+    return x;
+}
+
+// ALL: define i32 @test1(i32 %x) #0 {{.*}}
+// ALL: {{.*}}__llvm_gcov_ctr{{.*}}
+// ALL: ret i32 {{.*}}
+// ALL: define i32 @test2(i32 %x) #0 {{.*}}
+// ALL: {{.*}}__llvm_gcov_ctr{{.*}}
+// ALL: ret i32 {{.*}}
+// ALL: define i32 @test(i32 %a) #0 {{.*}}
+// ALL: {{.*}}__llvm_gcov_ctr{{.*}}
+// ALL: ret i32 {{.*}}
+
+// NOH: define i32 @test1(i32 %x) #0 {{.*}}
+// NOH-NOT: {{.*}}__llvm_gcov_ctr{{.*}}
+// NOH: ret i32 {{.*}}
+// NOH: define i32 @test2(i32 %x) #0 {{.*}}
+// NOH-NOT: {{.*}}__llvm_gcov_ctr{{.*}}
+// NOH: ret i32 {{.*}}
+// NOH: define i32 @test(i32 %a) #0 {{.*}}
+// NOH: {{.*}}__llvm_gcov_ctr{{.*}}
+// NOH: ret i32 {{.*}}
+
+// NOH2: define i32 @test1(i32 %x) #0 {{.*}}
+// NOH2: {{.*}}__llvm_gcov_ctr{{.*}}
+// NOH2: ret i32 {{.*}}
+// NOH2: define i32 @test2(i32 %x) #0 {{.*}}
+// NOH2-NOT: {{.*}}__llvm_gcov_ctr{{.*}}
+// NOH2: ret i32 {{.*}}
+// NOH2: define i32 @test(i32 %a) #0 {{.*}}
+// NOH2: {{.*}}__llvm_gcov_ctr{{.*}}
+// NOH2: ret i32 {{.*}}
+
+// C: define i32 @test1(i32 %x) #0 {{.*}}
+// C-NOT: {{.*}}__llvm_gcov_ctr{{.*}}
+// C: ret i32 {{.*}}
+// C: define i32 @test2(i32 %x) #0 {{.*}}
+// C-NOT: {{.*}}__llvm_gcov_ctr{{.*}}
+// C: ret i32 {{.*}}
+// C: define i32 @test(i32 %a) #0 {{.*}}
+// C: {{.*}}__llvm_gcov_ctr{{.*}}
+// C: ret i32 {{.*}}
+
+// H: define i32 @test1(i32 %x) #0 {{.*}}
+// H: {{.*}}__llvm_gcov_ctr{{.*}}
+// H: ret i32 {{.*}}
+// H: define i32 @test2(i32 %x) #0 {{.*}}
+// H: {{.*}}__llvm_gcov_ctr{{.*}}
+// H: ret i32 {{.*}}
+// H: define i32 @test(i32 %a) #0 {{.*}}
+// H-NOT: {{.*}}__llvm_gcov_ctr{{.*}}
+// H: ret i32 {{.*}}
+
+// NONE: define i32 @test1(i32 %x) #0 {{.*}}
+// NONE-NOT: {{.*}}__llvm_gcov_ctr{{.*}}
+// NONE: ret i32 {{.*}}
+// NONE: define i32 @test2(i32 %x) #0 {{.*}}
+// NONE-NOT: {{.*}}__llvm_gcov_ctr{{.*}}
+// NONE: ret i32 {{.*}}
+// NONE: define i32 @test(i32 %a) #0 {{.*}}
+// NONE-NOT: {{.*}}__llvm_gcov_ctr{{.*}}
+// NONE: ret i32 {{.*}}