Merging r232439:

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r232439 | mail | 2015-03-16 19:52:21 -0400 (Mon, 16 Mar 2015) | 7 lines

GCOV: Expose the -coverage-exit-block-before-body flag in clang -cc1

This exposes the optional exit block placement logic from r232438 as a
clang -cc1 option. There is a test on the llvm side, but there isn't
really a way to inspect the gcov options from clang to test it here as
well.

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llvm-svn: 236305

4 files changed, 6 insertions, 0 deletions

diff --git a/clang/include/clang/Driver/CC1Options.td b/clang/include/clang/Driver/CC1Options.td
index e0430014105c..f2c0f0a01bf0 100644
--- a/clang/include/clang/Driver/CC1Options.td
+++ b/clang/include/clang/Driver/CC1Options.td
@@ -182,6 +182,8 @@ def coverage_cfg_checksum : Flag<["-"], "coverage-cfg-checksum">,
   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_exit_block_before_body : Flag<["-"], "coverage-exit-block-before-data">,
+  HelpText<"Emit the exit block before the body blocks in .gcno files.">;
 def coverage_version_EQ : Joined<["-"], "coverage-version=">,
   HelpText<"Four-byte version string for gcov files.">;
 def test_coverage : Flag<["-"], "test-coverage">,
diff --git a/clang/include/clang/Frontend/CodeGenOptions.def b/clang/include/clang/Frontend/CodeGenOptions.def
index b44672d0f5f0..15b15bde62be 100644
--- a/clang/include/clang/Frontend/CodeGenOptions.def
+++ b/clang/include/clang/Frontend/CodeGenOptions.def
@@ -35,6 +35,7 @@ CODEGENOPT(AsmVerbose        , 1, 0) ///< -dA, -fverbose-asm.
 CODEGENOPT(ObjCAutoRefCountExceptions , 1, 0) ///< Whether ARC should be EH-safe.
 CODEGENOPT(CoverageExtraChecksum, 1, 0) ///< Whether we need a second checksum for functions in GCNO files.
 CODEGENOPT(CoverageNoFunctionNamesInData, 1, 0) ///< Do not include function names in GCDA files.
+CODEGENOPT(CoverageExitBlockBeforeBody, 1, 0) ///< Whether to emit the exit block before the body blocks in GCNO files.
 CODEGENOPT(CUDAIsDevice      , 1, 0) ///< Set when compiling for CUDA device.
 CODEGENOPT(CXAAtExit         , 1, 1) ///< Use __cxa_atexit for calling destructors.
 CODEGENOPT(CXXCtorDtorAliases, 1, 0) ///< Emit complete ctors/dtors as linker
diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index 25ecec586244..7daf980f02e5 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -375,6 +375,7 @@ void EmitAssemblyHelper::CreatePasses() {
     Options.NoRedZone = CodeGenOpts.DisableRedZone;
     Options.FunctionNamesInData =
         !CodeGenOpts.CoverageNoFunctionNamesInData;
+    Options.ExitBlockBeforeBody = CodeGenOpts.CoverageExitBlockBeforeBody;
     MPM->add(createGCOVProfilerPass(Options));
     if (CodeGenOpts.getDebugInfo() == CodeGenOptions::NoDebugInfo)
       MPM->add(createStripSymbolsPass(true));
diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index 54025b06557a..dc88b809cd32 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -489,6 +489,8 @@ static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
     Opts.CoverageExtraChecksum = Args.hasArg(OPT_coverage_cfg_checksum);
     Opts.CoverageNoFunctionNamesInData =
         Args.hasArg(OPT_coverage_no_function_names_in_data);
+    Opts.CoverageExitBlockBeforeBody =
+        Args.hasArg(OPT_coverage_exit_block_before_body);
     if (Args.hasArg(OPT_coverage_version_EQ)) {
       StringRef CoverageVersion = Args.getLastArgValue(OPT_coverage_version_EQ);
       if (CoverageVersion.size() != 4) {