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Revert "DIBuilder: Remove dead code"

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This reverts commit r218820.  It turns out that Adrian has an
outstanding SROA patch that uses this.

I've updated it to forward to `createExpression()`.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218828 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Duncan P. N. Exon Smith 2014-10-01 21:32:12 +00:00
parent 2b918388ab
commit 328f64bf7c
2 changed files with 14 additions and 0 deletions
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8
include/llvm/IR/DIBuilder.h
View File

@ -505,6 +505,14 @@ namespace llvm {
/// @param Addr An array of complex address operations.
DIExpression createExpression(ArrayRef<int64_t> Addr = None);
/// createPieceExpression - Create a descriptor to describe one part
/// of aggregate variable that is fragmented across multiple Values.
///
/// @param OffsetInBytes Offset of the piece in bytes.
/// @param SizeInBytes Size of the piece in bytes.
DIExpression createPieceExpression(unsigned OffsetInBytes,
unsigned SizeInBytes);
/// createFunction - Create a new descriptor for the specified subprogram.
/// See comments in DISubprogram for descriptions of these fields.
/// @param Scope Function scope.

6
lib/IR/DIBuilder.cpp
View File

@ -1056,6 +1056,12 @@ DIExpression DIBuilder::createExpression(ArrayRef<int64_t> Addr) {
return DIExpression(MDNode::get(VMContext, Elts));
}
DIExpression DIBuilder::createPieceExpression(unsigned OffsetInBytes,
unsigned SizeInBytes) {
int64_t Addr[] = {dwarf::DW_OP_piece, OffsetInBytes, SizeInBytes};
return createExpression(Addr);
}
/// createFunction - Create a new descriptor for the specified function.
/// FIXME: this is added for dragonegg. Once we update dragonegg
/// to call resolve function, this will be removed.