Emit 128 bit constant.
This fixes PR 8913 crash.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@122971 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index 72b6fa1..0ebd94a 100644
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -894,6 +894,39 @@
return true;
}
+/// addConstantValue - Add constant value entry in variable DIE.
+bool DwarfDebug::addConstantValue(DIE *Die, ConstantInt *CI,
+ bool Unsigned) {
+ if (CI->getBitWidth() <= 64) {
+ if (Unsigned)
+ addUInt(Die, dwarf::DW_AT_const_value, dwarf::DW_FORM_udata,
+ CI->getZExtValue());
+ else
+ addSInt(Die, dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata,
+ CI->getSExtValue());
+ return true;
+ }
+
+ DIEBlock *Block = new (DIEValueAllocator) DIEBlock();
+
+ // Get the raw data form of the large APInt.
+ const APInt Val = CI->getValue();
+ const char *Ptr = (const char*)Val.getRawData();
+
+ int NumBytes = Val.getBitWidth() / 8; // 8 bits per byte.
+ bool LittleEndian = Asm->getTargetData().isLittleEndian();
+ int Incr = (LittleEndian ? 1 : -1);
+ int Start = (LittleEndian ? 0 : NumBytes - 1);
+ int Stop = (LittleEndian ? NumBytes : -1);
+
+ // Output the constant to DWARF one byte at a time.
+ for (; Start != Stop; Start += Incr)
+ addUInt(Block, 0, dwarf::DW_FORM_data1,
+ (unsigned char)0xFF & Ptr[Start]);
+
+ addBlock(Die, dwarf::DW_AT_const_value, 0, Block);
+ return true;
+}
/// addToContextOwner - Add Die into the list of its context owner's children.
void DwarfDebug::addToContextOwner(DIE *Die, DIDescriptor Context) {
@@ -1957,16 +1990,10 @@
} else {
addBlock(VariableDIE, dwarf::DW_AT_location, 0, Block);
}
- } else if (Constant *C = GV.getConstant()) {
- if (ConstantInt *CI = dyn_cast<ConstantInt>(C)) {
- if (isUnsignedDIType(GTy))
- addUInt(VariableDIE, dwarf::DW_AT_const_value, dwarf::DW_FORM_udata,
- CI->getZExtValue());
- else
- addSInt(VariableDIE, dwarf::DW_AT_const_value, dwarf::DW_FORM_sdata,
- CI->getSExtValue());
- }
- }
+ } else if (ConstantInt *CI =
+ dyn_cast_or_null<ConstantInt>(GV.getConstant()))
+ addConstantValue(VariableDIE, CI, isUnsignedDIType(GTy));
+
return;
}