[PATCH] D15624: Add iOS/watchOS/tvOS support for ASan (clang part)

[Anna Zaks via cfe-commits]

zaks.anna created this revision.
zaks.anna added reviewers: kcc, cfe-commits.

Change the clang driver to accept ASan on iOS/watchOS/tvOS. 

This change along with the corresponding changes in llvm and compiler-rt complete ASan support for iOS/watchOS/tvOS.

http://reviews.llvm.org/D15624

Files:
  lib/Driver/ToolChains.cpp
  test/Driver/fsanitize.c

Index: test/Driver/fsanitize.c
===================================================================
--- test/Driver/fsanitize.c
+++ test/Driver/fsanitize.c
@@ -230,7 +230,7 @@
 // CHECK-VPTR-DARWIN-NEW: -fsanitize=alignment,vptr
 
 // RUN: %clang -target armv7-apple-ios7 -miphoneos-version-min=7.0 -fsanitize=address %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ASAN-IOS
-// CHECK-ASAN-IOS: unsupported option '-fsanitize=address' for target 'arm-apple-ios7'
+// CHECK-ASAN-IOS: -fsanitize=address
 
 // RUN: %clang -target i386-pc-openbsd -fsanitize=address %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-ASAN-OPENBSD
 // CHECK-ASAN-OPENBSD: unsupported option '-fsanitize=address' for target 'i386-pc-openbsd'
Index: lib/Driver/ToolChains.cpp
===================================================================
--- lib/Driver/ToolChains.cpp
+++ lib/Driver/ToolChains.cpp
@@ -363,9 +363,24 @@
     // Sanitizer runtime libraries requires C++.
     AddCXXStdlibLibArgs(Args, CmdArgs);
   }
-  // ASan is not supported on watchOS.
-  assert(isTargetMacOS() || isTargetIOSSimulator());
-  StringRef OS = isTargetMacOS() ? "osx" : "iossim";
+
+  StringRef OS = "";
+  if (isTargetMacOS())
+    OS = "osx";
+  if (isTargetWatchOSSimulator())
+    OS = "watchossim";
+  if (isTargetWatchOS())
+    OS = "watchos";
+  if (isTargetIOSSimulator())
+    OS = "iossim";
+  if (isTargetIPhoneOS())
+    OS = "ios";
+  if (isTargetTvOSSimulator())
+    OS = "tvossim";
+  if (isTargetTvOS())
+    OS = "tvos";
+  assert(!OS.empty());
+
   AddLinkRuntimeLib(
       Args, CmdArgs,
       (Twine("libclang_rt.") + Sanitizer + "_" + OS + "_dynamic.dylib").str(),
@@ -1213,8 +1228,7 @@
 
 SanitizerMask Darwin::getSupportedSanitizers() const {
   SanitizerMask Res = ToolChain::getSupportedSanitizers();
-  if (isTargetMacOS() || isTargetIOSSimulator())
-    Res |= SanitizerKind::Address;
+  Res |= SanitizerKind::Address;
   if (isTargetMacOS()) {
     if (!isMacosxVersionLT(10, 9))
       Res |= SanitizerKind::Vptr;


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