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AutoUpgrade: Remove obsolete dbg.declare/value upgrade 

This upgrade of `@llvm.dbg.declare` and `@llvm.dbg.value` isn't useful,
since it's for an old debug info version.  The calls will get stripped
anyway by `UpgradeDebugInfo()`.

llvm-svn: 234181
This commit is contained in:
Duncan P. N. Exon Smith 2015-04-06 17:17:47 +00:00
parent 96d74006fd
commit 5342c6ceab
1 changed files with 0 additions and 49 deletions
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49
llvm/lib/IR/AutoUpgrade.cpp
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@ -124,19 +124,6 @@ static bool UpgradeIntrinsicFunction1(Function *F, Function *&NewFn) {
}
break;
}
case 'd': {
if (Name.startswith("dbg.declare") && F->arg_size() == 2) {
F->setName(Name + ".old");
NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::dbg_declare);
return true;
}
if (Name.startswith("dbg.value") && F->arg_size() == 3) {
F->setName(Name + ".old");
NewFn = Intrinsic::getDeclaration(F->getParent(), Intrinsic::dbg_value);
return true;
}
break;
}
case 'o':
// We only need to change the name to match the mangling including the
@ -354,23 +341,6 @@ bool llvm::UpgradeGlobalVariable(GlobalVariable *GV) {
return false;
}
static MDNode *getNodeField(const MDNode *DbgNode, unsigned Elt) {
if (!DbgNode || Elt >= DbgNode->getNumOperands())
return nullptr;
return dyn_cast_or_null<MDNode>(DbgNode->getOperand(Elt));
}
static MetadataAsValue *getExpression(Value *VarOperand, Function *F) {
// Old-style DIVariables have an optional expression as the 8th element.
DIExpression Expr(getNodeField(
cast<MDNode>(cast<MetadataAsValue>(VarOperand)->getMetadata()), 8));
if (!Expr) {
DIBuilder DIB(*F->getParent(), /*AllowUnresolved*/ false);
Expr = DIB.createExpression();
}
return MetadataAsValue::get(F->getContext(), Expr);
}
// Handles upgrading SSE2 and AVX2 PSLLDQ intrinsics by converting them
// to byte shuffles.
static Value *UpgradeX86PSLLDQIntrinsics(IRBuilder<> &Builder, LLVMContext &C,
@ -753,25 +723,6 @@ void llvm::UpgradeIntrinsicCall(CallInst *CI, Function *NewFn) {
default:
llvm_unreachable("Unknown function for CallInst upgrade.");
// Upgrade debug intrinsics to use an additional DIExpression argument.
case Intrinsic::dbg_declare: {
auto NewCI =
Builder.CreateCall3(NewFn, CI->getArgOperand(0), CI->getArgOperand(1),
getExpression(CI->getArgOperand(1), F), Name);
NewCI->setDebugLoc(CI->getDebugLoc());
CI->replaceAllUsesWith(NewCI);
CI->eraseFromParent();
return;
}
case Intrinsic::dbg_value: {
auto NewCI = Builder.CreateCall4(
NewFn, CI->getArgOperand(0), CI->getArgOperand(1), CI->getArgOperand(2),
getExpression(CI->getArgOperand(2), F), Name);
NewCI->setDebugLoc(CI->getDebugLoc());
CI->replaceAllUsesWith(NewCI);
CI->eraseFromParent();
return;
}
case Intrinsic::ctlz:
case Intrinsic::cttz:
assert(CI->getNumArgOperands() == 1 &&