Adrian Prantl 076fd5dfc1 Move the complex address expression out of DIVariable and into an extra ... argument of the llvm.dbg.declare/llvm.dbg.value intrinsics. Previously, DIVariable was a variable-length field that has an optional reference to a Metadata array consisting of a variable number of complex address expressions. In the case of OpPiece expressions this is wasting a lot of storage in IR, because when an aggregate type is, e.g., SROA'd into all of its n individual members, the IR will contain n copies of the DIVariable, all alike, only differing in the complex address reference at the end. By making the complex address into an extra argument of the dbg.value/dbg.declare intrinsics, all of the pieces can reference the same variable and the complex address expressions can be uniqued across the CU, too. Down the road, this will allow us to move other flags, such as "indirection" out of the DIVariable, too. The new intrinsics look like this: declare void @llvm.dbg.declare(metadata %storage, metadata %var, metadata %expr) declare void @llvm.dbg.value(metadata %storage, i64 %offset, metadata %var, metadata %expr) This patch adds a new LLVM-local tag to DIExpressions, so we can detect and pretty-print DIExpression metadata nodes. What this patch doesn't do: This patch does not touch the "Indirect" field in DIVariable; but moving that into the expression would be a natural next step. http://reviews.llvm.org/D4919 rdar://problem/17994491 Thanks to dblaikie and dexonsmith for reviewing this patch! git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218778 91177308-0d34-0410-b5e6-96231b3b80d8		2014-10-01 17:55:39 +00:00
..
AsmWriter.cpp
AsmWriter.h
AttributeImpl.h
Attributes.cpp	Revert accidentally committed r217107	2014-09-03 23:38:05 +00:00
AutoUpgrade.cpp	Move the complex address expression out of DIVariable and into an extra	2014-10-01 17:55:39 +00:00
BasicBlock.cpp
CMakeLists.txt
Comdat.cpp
ConstantFold.cpp
ConstantFold.h
ConstantRange.cpp
Constants.cpp
ConstantsContext.h
Core.cpp	Return a std::unique_ptr when creating a new MemoryBuffer.	2014-08-27 20:03:13 +00:00
DataLayout.cpp	Use cast<> instead of unchecked dyn_cast<>	2014-09-18 22:28:56 +00:00
DebugInfo.cpp	Move the complex address expression out of DIVariable and into an extra	2014-10-01 17:55:39 +00:00
DebugLoc.cpp
DiagnosticInfo.cpp
DiagnosticPrinter.cpp	Fix typos in comments, NFC	2014-08-29 21:53:01 +00:00
DIBuilder.cpp	Move the complex address expression out of DIVariable and into an extra	2014-10-01 17:55:39 +00:00
Dominators.cpp
Function.cpp	[AVX512] Added intrinsics for VPCMPEQB and VPCMPEQW.	2014-09-30 11:32:22 +00:00
GCOV.cpp
Globals.cpp
GVMaterializer.cpp
InlineAsm.cpp	[inline asm] Add a check in InlineAsm::ConstraintInfo::Parse to make sure '{'	2014-09-05 22:30:32 +00:00
Instruction.cpp	typo	2014-09-10 16:58:40 +00:00
Instructions.cpp	Use dyn_cast<> instead of isa<> and cast<>	2014-09-15 17:56:51 +00:00
IntrinsicInst.cpp
IRBuilder.cpp
IRPrintingPasses.cpp
LeakDetector.cpp
LeaksContext.h
LegacyPassManager.cpp
LLVMBuild.txt
LLVMContext.cpp
LLVMContextImpl.cpp
LLVMContextImpl.h
Makefile
Mangler.cpp
MDBuilder.cpp
Metadata.cpp
Module.cpp	Be more careful in parsing Module::ModFlagBehavior value	2014-09-08 19:16:28 +00:00
module.modulemap
Pass.cpp
PassManager.cpp
PassRegistry.cpp
SymbolTableListTraitsImpl.h
Type.cpp	Consider addrspaces in canLosslesslyBitCastTo()	2014-08-31 19:19:57 +00:00
TypeFinder.cpp
Use.cpp
UseListOrder.cpp
User.cpp
Value.cpp
ValueSymbolTable.cpp
ValueTypes.cpp
Verifier.cpp	Be more careful in parsing Module::ModFlagBehavior value	2014-09-08 19:16:28 +00:00