Add a flag that indicates whether a target supports compact unwind info or not.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@133662 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/llvm/Target/TargetLoweringObjectFile.h b/include/llvm/Target/TargetLoweringObjectFile.h
index 12ea2a5..a3d1f37 100644
--- a/include/llvm/Target/TargetLoweringObjectFile.h
+++ b/include/llvm/Target/TargetLoweringObjectFile.h
@@ -107,8 +107,12 @@
/// private linkage, aka an L or .L label) or false if it should be a normal
/// non-.globl label. This defaults to true.
bool IsFunctionEHFrameSymbolPrivate;
+
+ /// SupportsCompactUnwindInfo - This flag is set to true if the CIE and FDE
+ /// information should be emitted in a compact form.
+ bool SupportsCompactUnwindInfo;
+
public:
-
MCContext &getContext() const { return *Ctx; }
virtual ~TargetLoweringObjectFile();
@@ -126,10 +130,12 @@
bool getSupportsWeakOmittedEHFrame() const {
return SupportsWeakOmittedEHFrame;
}
-
bool getCommDirectiveSupportsAlignment() const {
return CommDirectiveSupportsAlignment;
}
+ bool getSupportsCompactUnwindInfo() const {
+ return SupportsCompactUnwindInfo;
+ }
const MCSection *getTextSection() const { return TextSection; }
const MCSection *getDataSection() const { return DataSection; }
diff --git a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
index 3f346a3..df42b2c 100644
--- a/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
+++ b/lib/CodeGen/TargetLoweringObjectFileImpl.cpp
@@ -487,8 +487,12 @@
// .comm doesn't support alignment before Leopard.
Triple T(((LLVMTargetMachine&)TM).getTargetTriple());
- if (T.isMacOSX() && T.isMacOSXVersionLT(10, 5))
- CommDirectiveSupportsAlignment = false;
+ if (T.isMacOSX()) {
+ if (T.isMacOSXVersionLT(10, 5))
+ CommDirectiveSupportsAlignment = false;
+ if (!T.isMacOSXVersionLT(10, 6))
+ SupportsCompactUnwindInfo = true;
+ }
TargetLoweringObjectFile::Initialize(Ctx, TM);
diff --git a/lib/Target/TargetLoweringObjectFile.cpp b/lib/Target/TargetLoweringObjectFile.cpp
index 9f87c07..130a553 100644
--- a/lib/Target/TargetLoweringObjectFile.cpp
+++ b/lib/Target/TargetLoweringObjectFile.cpp
@@ -61,6 +61,7 @@
IsFunctionEHFrameSymbolPrivate = true;
SupportsWeakOmittedEHFrame = true;
+ SupportsCompactUnwindInfo = false;
}
TargetLoweringObjectFile::~TargetLoweringObjectFile() {