From b81715aca871ac4f14513b853336fb6acf0a1d78 Mon Sep 17 00:00:00 2001
From: Frederic Riss <friss@apple.com>
Date: Thu, 4 Sep 2014 06:14:35 +0000
Subject: [PATCH] Add DWARFFormValue::getAsBlock() and add FC_Flag as an
 acceptable class for an unsigned constant.

To be used in further patches that improve the dumpers.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@217129 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/DebugInfo/DWARFFormValue.h |  1 +
 lib/DebugInfo/DWARFFormValue.cpp        | 10 +++++++++-
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/include/llvm/DebugInfo/DWARFFormValue.h b/include/llvm/DebugInfo/DWARFFormValue.h
index d517a72d62e..2dde8fe242a 100644
--- a/include/llvm/DebugInfo/DWARFFormValue.h
+++ b/include/llvm/DebugInfo/DWARFFormValue.h
@@ -70,6 +70,7 @@ public:
   Optional<const char *> getAsCString(const DWARFUnit *U) const;
   Optional<uint64_t> getAsAddress(const DWARFUnit *U) const;
   Optional<uint64_t> getAsSectionOffset() const;
+  Optional<ArrayRef<const uint8_t>> getAsBlock() const;
 
   bool skipValue(DataExtractor debug_info_data, uint32_t *offset_ptr,
                  const DWARFUnit *u) const;
diff --git a/lib/DebugInfo/DWARFFormValue.cpp b/lib/DebugInfo/DWARFFormValue.cpp
index 8d0f96620a4..2f8affc8623 100644
--- a/lib/DebugInfo/DWARFFormValue.cpp
+++ b/lib/DebugInfo/DWARFFormValue.cpp
@@ -543,7 +543,15 @@ Optional<uint64_t> DWARFFormValue::getAsSectionOffset() const {
 }
 
 Optional<uint64_t> DWARFFormValue::getAsUnsignedConstant() const {
-  if (!isFormClass(FC_Constant) || Form == DW_FORM_sdata)
+  if ((!isFormClass(FC_Constant) && !isFormClass(FC_Flag))
+      || Form == DW_FORM_sdata)
     return None;
   return Value.uval;
 }
+
+Optional<ArrayRef<const uint8_t>> DWARFFormValue::getAsBlock() const {
+  if (!isFormClass(FC_Block) && !isFormClass(FC_Exprloc))
+    return None;
+  return ArrayRef<const uint8_t>(Value.data, Value.uval);
+}
+
-- 
2.34.1