r261135 - Enable SafeStack for CloudABI.

[Ed Schouten via cfe-commits]

Author: ed
Date: Wed Feb 17 12:56:20 2016
New Revision: 261135

URL: http://llvm.org/viewvc/llvm-project?rev=261135&view=rev
Log:
Enable SafeStack for CloudABI.

Summary:
I've got a patchset in my home directory to integrate support for
SafeStack into CloudABI's C library. All of the CloudABI unit tests
still seem to pass. Pretty sweet!

This change adds the necessary changes to Clang to make
-fsanitize=safe-stack work on CloudABI. Without it, passing this command
line flag throws an error.

Reviewers: eugenis, samsonov

Differential Revision: http://reviews.llvm.org/D17243

Modified:
    cfe/trunk/lib/Driver/ToolChains.cpp
    cfe/trunk/lib/Driver/ToolChains.h
    cfe/trunk/test/Driver/fsanitize.c

Modified: cfe/trunk/lib/Driver/ToolChains.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains.cpp?rev=261135&r1=261134&r2=261135&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains.cpp (original)
+++ cfe/trunk/lib/Driver/ToolChains.cpp Wed Feb 17 12:56:20 2016
@@ -3000,6 +3000,12 @@ Tool *CloudABI::buildLinker() const {
   return new tools::cloudabi::Linker(*this);
 }
 
+SanitizerMask CloudABI::getSupportedSanitizers() const {
+  SanitizerMask Res = ToolChain::getSupportedSanitizers();
+  Res |= SanitizerKind::SafeStack;
+  return Res;
+}
+
 /// OpenBSD - OpenBSD tool chain which can call as(1) and ld(1) directly.
 
 OpenBSD::OpenBSD(const Driver &D, const llvm::Triple &Triple,

Modified: cfe/trunk/lib/Driver/ToolChains.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains.h?rev=261135&r1=261134&r2=261135&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains.h (original)
+++ cfe/trunk/lib/Driver/ToolChains.h Wed Feb 17 12:56:20 2016
@@ -617,6 +617,8 @@ public:
 
   bool isPIEDefault() const override { return false; }
 
+  SanitizerMask getSupportedSanitizers() const override;
+
 protected:
   Tool *buildLinker() const override;
 };

Modified: cfe/trunk/test/Driver/fsanitize.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/fsanitize.c?rev=261135&r1=261134&r2=261135&view=diff
==============================================================================
--- cfe/trunk/test/Driver/fsanitize.c (original)
+++ cfe/trunk/test/Driver/fsanitize.c Wed Feb 17 12:56:20 2016
@@ -311,6 +311,10 @@
 // RUN: %clang -target powerpc64le-unknown-linux-gnu -fsanitize=memory %s -### 2>&1 | FileCheck %s -check-prefix=CHECK-SANM
 // CHECK-SANM: "-fsanitize=memory"
 
+// RUN: %clang -target aarch64-unknown-cloudabi -fsanitize=safe-stack %s -### 2>&1 | FileCheck %s -check-prefix=SAFESTACK-CLOUDABI
+// RUN: %clang -target x86_64-unknown-cloudabi -fsanitize=safe-stack %s -### 2>&1 | FileCheck %s -check-prefix=SAFESTACK-CLOUDABI
+// SAFESTACK-CLOUDABI: "-fsanitize=safe-stack"
+
 // RUN: %clang -target x86_64-scei-ps4 -fsanitize=function -fsanitize=undefined %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-FSAN-UBSAN-PS4
 // CHECK-FSAN-UBSAN-PS4: unsupported option '-fsanitize=function' for target 'x86_64-scei-ps4'
 // RUN: %clang -target x86_64-scei-ps4 -fsanitize=function %s -### 2>&1 | FileCheck %s --check-prefix=CHECK-FSAN-PS4