[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.
llvm-svn: 301374
diff --git a/clang/lib/CodeGen/BackendUtil.cpp b/clang/lib/CodeGen/BackendUtil.cpp
index 2f35423..85788b4 100644
--- a/clang/lib/CodeGen/BackendUtil.cpp
+++ b/clang/lib/CodeGen/BackendUtil.cpp
@@ -196,9 +196,8 @@
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: