[PATCH] D17397: Make deprecation message for -fsanitize-coverage= with numeric argument friendlier.

[Nico Weber via cfe-commits]

thakis created this revision.
thakis added a reviewer: kcc.
thakis added a subscriber: cfe-commits.

http://reviews.llvm.org/D17397

Files:
  lib/Driver/SanitizerArgs.cpp
  test/Driver/fsanitize-coverage.c

Index: test/Driver/fsanitize-coverage.c
===================================================================
--- test/Driver/fsanitize-coverage.c
+++ test/Driver/fsanitize-coverage.c
@@ -22,7 +22,7 @@
 // CHECK-SANITIZE-COVERAGE-FUNC_INDIR: fsanitize-coverage-indirect-calls
 
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=address -fsanitize-coverage=3 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANITIZE-COVERAGE-3
-// CHECK-SANITIZE-COVERAGE-3: warning: argument '-fsanitize-coverage=3' is deprecated, use '-fsanitize-coverage=[func,bb,edge]' instead
+// CHECK-SANITIZE-COVERAGE-3: warning: argument '-fsanitize-coverage=3' is deprecated, use '-fsanitize-coverage=edge' instead
 //
 // RUN: %clang -target x86_64-linux-gnu -fsanitize=address -fsanitize-coverage=5 %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-SANITIZE-COVERAGE-5
 // CHECK-SANITIZE-COVERAGE-5: error: unsupported argument '5' to option 'fsanitize-coverage='
Index: lib/Driver/SanitizerArgs.cpp
===================================================================
--- lib/Driver/SanitizerArgs.cpp
+++ lib/Driver/SanitizerArgs.cpp
@@ -444,23 +444,31 @@
           !StringRef(Arg->getValue(0))
                .getAsInteger(0, LegacySanitizeCoverage) &&
           LegacySanitizeCoverage >= 0 && LegacySanitizeCoverage <= 4) {
-        D.Diag(diag::warn_drv_deprecated_arg)
-            << Arg->getAsString(Args) << "-fsanitize-coverage=[func,bb,edge]";
-        // TODO: Add deprecation notice for this form.
         switch (LegacySanitizeCoverage) {
         case 0:
+          D.Diag(diag::warn_drv_deprecated_arg) << Arg->getAsString(Args)
+                                                << "-fsanitize-coverage=";
           CoverageFeatures = 0;
           break;
         case 1:
+          D.Diag(diag::warn_drv_deprecated_arg) << Arg->getAsString(Args)
+                                                << "-fsanitize-coverage=func";
           CoverageFeatures = CoverageFunc;
           break;
         case 2:
+          D.Diag(diag::warn_drv_deprecated_arg) << Arg->getAsString(Args)
+                                                << "-fsanitize-coverage=bb";
           CoverageFeatures = CoverageBB;
           break;
         case 3:
+          D.Diag(diag::warn_drv_deprecated_arg) << Arg->getAsString(Args)
+                                                << "-fsanitize-coverage=edge";
           CoverageFeatures = CoverageEdge;
           break;
         case 4:
+          D.Diag(diag::warn_drv_deprecated_arg)
+              << Arg->getAsString(Args)
+              << "-fsanitize-coverage=edge,indirect-calls";
           CoverageFeatures = CoverageEdge | CoverageIndirCall;
           break;
         }


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