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A fix for PR21176.

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DW_OP_const <const> doesn't describe a constant value, but a value at a constant address.
The proper way to describe a constant value is DW_OP_constu <const>, DW_OP_stack_value.

Added DW_OP_stack_value to the stack.

-This line, and those below, will be ignored--

M    lib/CodeGen/AsmPrinter/DwarfDebug.cpp
A    test/DebugInfo/incorrect-variable-debugloc1.ll


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223981 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Ekaterina Romanova
2014-12-10 23:19:56 +00:00
parent 218d20a48b
commit de68a563bc
2 changed files with 74 additions and 0 deletions
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lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+2
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@@ -1722,6 +1722,8 @@ void DwarfDebug::emitDebugLocValue(ByteStreamer &Streamer,
Streamer.EmitInt8(dwarf::DW_OP_constu, "DW_OP_constu");
Streamer.EmitULEB128(Value.getInt());
}
if (getDwarfVersion() >= 4)
Streamer.EmitInt8(dwarf::DW_OP_stack_value, "DW_OP_stack_value");
} else if (Value.isLocation()) {
MachineLocation Loc = Value.getLoc();
DIExpression Expr = Value.getExpression();