Improve llvm.dbg.declare intrinsic by referring directly to the storage in its first argument, via function-local metadata (instead of via a bitcast).

This patch also cleans up code that expects there to be a bitcast in the first argument and testcases that call llvm.dbg.declare.
It also strips old llvm.dbg.declare intrinsics that did not pass metadata as the first argument.

llvm-svn: 93531

1 files changed, 11 insertions, 0 deletions

diff --git a/llvm/lib/VMCore/IntrinsicInst.cpp b/llvm/lib/VMCore/IntrinsicInst.cpp
index cb9252efdf5..d8f015a9e2c 100644
--- a/llvm/lib/VMCore/IntrinsicInst.cpp
+++ b/llvm/lib/VMCore/IntrinsicInst.cpp
@@ -51,6 +51,17 @@ Value *DbgInfoIntrinsic::StripCast(Value *C) {
 }
 
 //===----------------------------------------------------------------------===//
+/// DbgDeclareInst - This represents the llvm.dbg.declare instruction.
+///
+
+Value *DbgDeclareInst::getAddress() const {
+  if (MDNode* MD = cast_or_null<MDNode>(getOperand(1)))
+    return MD->getOperand(0);
+  else
+    return NULL;
+}
+
+//===----------------------------------------------------------------------===//
 /// DbgValueInst - This represents the llvm.dbg.value instruction.
 ///