From b86ce219f4dabe1ac5ceee79651b05308672064e Mon Sep 17 00:00:00 2001 From: Markus Lavin Date: Tue, 19 Mar 2019 13:16:28 +0000 Subject: [DebugInfo] Introduce DW_OP_LLVM_convert Introduce a DW_OP_LLVM_convert Dwarf expression pseudo op that allows for a convenient way to perform type conversions on the Dwarf expression stack. As an additional bonus it paves the way for using other Dwarf v5 ops that need to reference a base_type. The new DW_OP_LLVM_convert is used from lib/Transforms/Utils/Local.cpp to perform sext/zext on debug values but mainly the patch is about preparing terrain for adding other Dwarf v5 ops that need to reference a base_type. For Dwarf v5 the op maps to DW_OP_convert and for earlier versions a complex shift & mask pattern is generated to emulate sext/zext. This is a recommit of r356442 with trivial fixes for the failing tests. Differential Revision: https://reviews.llvm.org/D56587 llvm-svn: 356451 --- llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp | 2 ++ 1 file changed, 2 insertions(+) (limited to 'llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp') diff --git a/llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp b/llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp index 24400ff89c6..133b85a0969 100644 --- a/llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp +++ b/llvm/lib/DebugInfo/DWARF/DWARFExpression.cpp @@ -188,6 +188,8 @@ bool DWARFExpression::Operation::extract(DataExtractor Data, uint16_t Version, default: llvm_unreachable("Unknown DWARFExpression Op size"); } + + OperandEndOffsets[Operand] = Offset; } EndOffset = Offset; -- cgit v1.2.3