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Do not drop constant values when a variable's content is described using .debug_loc entries.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@132427 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Devang Patel
2011-06-01 22:03:25 +00:00
parent ec880283b3
commit c432907eca
3 changed files with 81 additions and 14 deletions
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15
lib/CodeGen/AsmPrinter/DwarfDebug.h
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@@ -68,10 +68,19 @@ typedef struct DotDebugLocEntry {
MachineLocation Loc;
const MDNode *Variable;
bool Merged;
DotDebugLocEntry() : Begin(0), End(0), Variable(0), Merged(false) {}
bool Constant;
int64_t iConstant;
DotDebugLocEntry()
: Begin(0), End(0), Variable(0), Merged(false),
Constant(false), iConstant(0) {}
DotDebugLocEntry(const MCSymbol *B, const MCSymbol *E, MachineLocation &L,
const MDNode *V)
: Begin(B), End(E), Loc(L), Variable(V), Merged(false) {}
: Begin(B), End(E), Loc(L), Variable(V), Merged(false),
Constant(false), iConstant(0) {}
DotDebugLocEntry(const MCSymbol *B, const MCSymbol *E, int64_t i)
: Begin(B), End(E), Variable(0), Merged(false),
Constant(true), iConstant(i) {}
/// Empty entries are also used as a trigger to emit temp label. Such
/// labels are referenced is used to find debug_loc offset for a given DIE.
bool isEmpty() { return Begin == 0 && End == 0; }
@@ -82,6 +91,8 @@ typedef struct DotDebugLocEntry {
Next->Begin = Begin;
Merged = true;
}
bool isConstant() { return Constant; }
int64_t getConstant() { return iConstant; }
} DotDebugLocEntry;
//===----------------------------------------------------------------------===//