Author: eugenis
Date: Tue Apr 25 19:51:06 2017
New Revision: 301374
URL: http://llvm.org/viewvc/llvm-project?rev=301374&view=rev
Log:
[asan] Unconditionally enable GC of globals on COFF.
This change restores pre-r301225 behavior, where linker GC compatible global
instrumentation was used on COFF targets disregarding -f(no-)data-sections
and/or
/Gw flags.
This instrumentation puts each global in a COMDAT with an ASan descriptor for
that global.
It effectively enables -fdata-sections, but limits it to ASan-instrumented
globals.
Modified:
cfe/trunk/lib/CodeGen/BackendUtil.cpp
cfe/trunk/test/CodeGen/asan-globals-gc.cpp
Modified: cfe/trunk/lib/CodeGen/BackendUtil.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/CodeGen/BackendUtil.cpp?rev=301374&r1=301373&r2=301374&view=diff
==============================================================================
--- cfe/trunk/lib/CodeGen/BackendUtil.cpp (original)
+++ cfe/trunk/lib/CodeGen/BackendUtil.cpp Tue Apr 25 19:51:06 2017
@@ -196,9 +196,8 @@ static void addSanitizerCoveragePass(con
static bool asanUseGlobalsGC(const Triple &T, const CodeGenOptions &CGOpts) {
switch (T.getObjectFormat()) {
case Triple::MachO:
- return true;
case Triple::COFF:
- return CGOpts.DataSections;
+ return true;
case Triple::ELF:
return CGOpts.DataSections && !CGOpts.DisableIntegratedAS;
default:
Modified: cfe/trunk/test/CodeGen/asan-globals-gc.cpp
URL:
http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/asan-globals-gc.cpp?rev=301374&r1=301373&r2=301374&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/asan-globals-gc.cpp (original)
+++ cfe/trunk/test/CodeGen/asan-globals-gc.cpp Tue Apr 25 19:51:06 2017
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -fsanitize=address -emit-llvm -o - -triple
x86_64-windows-msvc %s | FileCheck %s --check-prefix=WITHOUT-GC
+// RUN: %clang_cc1 -fsanitize=address -emit-llvm -o - -triple
x86_64-windows-msvc %s | FileCheck %s --check-prefix=WITH-GC
// RUN: %clang_cc1 -fsanitize=address -emit-llvm -o - -triple
x86_64-windows-msvc -fdata-sections %s | FileCheck %s --check-prefix=WITH-GC
int global;
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