llvm13/trunk/disable-DIArgList-in-SPIR-V.patch

   1 # This patch is needed for ISPC for Xe only
   2 # It disables using of DIArgList for dbg.val if SPIR-V target is used.
   3 # It is needed till DIArgList is supported in SPIR-V Translator.
   4 diff --git a/llvm/lib/Transforms/Utils/Local.cpp b/llvm/lib/Transforms/Utils/Local.cpp
   5 index d03d76f57ca1..0b86e454df57 100644
   6 --- a/llvm/lib/Transforms/Utils/Local.cpp
   7 +++ b/llvm/lib/Transforms/Utils/Local.cpp
   8 @@ -1771,7 +1771,14 @@ void llvm::salvageDebugInfoForDbgValues(
   9      } else if (isa<DbgValueInst>(DII) &&
  10                 DII->getNumVariableLocationOps() + AdditionalValues.size() <=
  11                     MaxDebugArgs) {
  12 -      DII->addVariableLocationOps(AdditionalValues, SalvagedExpr);
  13 +      if (!Triple(I.getModule()->getTargetTriple()).isSPIR()) {
  14 +        DII->addVariableLocationOps(AdditionalValues, SalvagedExpr);
  15 +      } else {
  16 +        // Do not salvage using DIArgList for dbg.val fpr SPIR-V target, as it is
  17 +        // not currently supported by SPIR-V Translator.
  18 +        Value *Undef = UndefValue::get(I.getOperand(0)->getType());
  19 +        DII->replaceVariableLocationOp(I.getOperand(0), Undef);
  20 +      }
  21      } else {
  22        // Do not salvage using DIArgList for dbg.addr/dbg.declare, as it is
  23        // currently only valid for stack value expressions.