Reland "[NVPTX] Cleanup/Refactoring in NVPTX AsmPrinter and RegisterInfo (NFC)" #127277
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
|
@llvm/pr-subscribers-backend-nvptx Author: Alex MacLean (AlexMaclean) ChangesPatch is 40.29 KiB, truncated to 20.00 KiB below, full version: https://github.com/llvm/llvm-project/pull/127277.diff 6 Files Affected:
diff --git a/llvm/lib/Target/NVPTX/NVPTXAsmPrinter.cpp b/llvm/lib/Target/NVPTX/NVPTXAsmPrinter.cpp
index 75d930d9f7b6f..c8e29c1da6ec4 100644
--- a/llvm/lib/Target/NVPTX/NVPTXAsmPrinter.cpp
+++ b/llvm/lib/Target/NVPTX/NVPTXAsmPrinter.cpp
@@ -27,6 +27,7 @@
#include "cl_common_defines.h"
#include "llvm/ADT/APFloat.h"
#include "llvm/ADT/APInt.h"
+#include "llvm/ADT/ArrayRef.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/DenseSet.h"
#include "llvm/ADT/SmallString.h"
@@ -47,6 +48,7 @@
#include "llvm/CodeGen/TargetRegisterInfo.h"
#include "llvm/CodeGen/ValueTypes.h"
#include "llvm/CodeGenTypes/MachineValueType.h"
+#include "llvm/IR/Argument.h"
#include "llvm/IR/Attributes.h"
#include "llvm/IR/BasicBlock.h"
#include "llvm/IR/Constant.h"
@@ -93,20 +95,19 @@ using namespace llvm;
#define DEPOTNAME "__local_depot"
-/// DiscoverDependentGlobals - Return a set of GlobalVariables on which \p V
+/// discoverDependentGlobals - Return a set of GlobalVariables on which \p V
/// depends.
static void
-DiscoverDependentGlobals(const Value *V,
+discoverDependentGlobals(const Value *V,
DenseSet<const GlobalVariable *> &Globals) {
- if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(V))
+ if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(V)) {
Globals.insert(GV);
- else {
- if (const User *U = dyn_cast<User>(V)) {
- for (unsigned i = 0, e = U->getNumOperands(); i != e; ++i) {
- DiscoverDependentGlobals(U->getOperand(i), Globals);
- }
- }
+ return;
}
+
+ if (const User *U = dyn_cast<User>(V))
+ for (const auto &O : U->operands())
+ discoverDependentGlobals(O, Globals);
}
/// VisitGlobalVariableForEmission - Add \p GV to the list of GlobalVariable
@@ -127,8 +128,8 @@ VisitGlobalVariableForEmission(const GlobalVariable *GV,
// Make sure we visit all dependents first
DenseSet<const GlobalVariable *> Others;
- for (unsigned i = 0, e = GV->getNumOperands(); i != e; ++i)
- DiscoverDependentGlobals(GV->getOperand(i), Others);
+ for (const auto &O : GV->operands())
+ discoverDependentGlobals(O, Others);
for (const GlobalVariable *GV : Others)
VisitGlobalVariableForEmission(GV, Order, Visited, Visiting);
@@ -623,9 +624,8 @@ static bool usedInGlobalVarDef(const Constant *C) {
if (!C)
return false;
- if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(C)) {
+ if (const GlobalVariable *GV = dyn_cast<GlobalVariable>(C))
return GV->getName() != "llvm.used";
- }
for (const User *U : C->users())
if (const Constant *C = dyn_cast<Constant>(U))
@@ -635,25 +635,23 @@ static bool usedInGlobalVarDef(const Constant *C) {
return false;
}
-static bool usedInOneFunc(const User *U, Function const *&oneFunc) {
- if (const GlobalVariable *othergv = dyn_cast<GlobalVariable>(U)) {
- if (othergv->getName() == "llvm.used")
+static bool usedInOneFunc(const User *U, Function const *&OneFunc) {
+ if (const GlobalVariable *OtherGV = dyn_cast<GlobalVariable>(U))
+ if (OtherGV->getName() == "llvm.used")
return true;
- }
- if (const Instruction *instr = dyn_cast<Instruction>(U)) {
- if (instr->getParent() && instr->getParent()->getParent()) {
- const Function *curFunc = instr->getParent()->getParent();
- if (oneFunc && (curFunc != oneFunc))
+ if (const Instruction *I = dyn_cast<Instruction>(U)) {
+ if (const Function *CurFunc = I->getFunction()) {
+ if (OneFunc && (CurFunc != OneFunc))
return false;
- oneFunc = curFunc;
+ OneFunc = CurFunc;
return true;
- } else
- return false;
+ }
+ return false;
}
for (const User *UU : U->users())
- if (!usedInOneFunc(UU, oneFunc))
+ if (!usedInOneFunc(UU, OneFunc))
return false;
return true;
@@ -666,16 +664,15 @@ static bool usedInOneFunc(const User *U, Function const *&oneFunc) {
* 2. Does it have local linkage?
* 3. Is the global variable referenced only in one function?
*/
-static bool canDemoteGlobalVar(const GlobalVariable *gv, Function const *&f) {
- if (!gv->hasLocalLinkage())
+static bool canDemoteGlobalVar(const GlobalVariable *GV, Function const *&f) {
+ if (!GV->hasLocalLinkage())
return false;
- PointerType *Pty = gv->getType();
- if (Pty->getAddressSpace() != ADDRESS_SPACE_SHARED)
+ if (GV->getAddressSpace() != ADDRESS_SPACE_SHARED)
return false;
const Function *oneFunc = nullptr;
- bool flag = usedInOneFunc(gv, oneFunc);
+ bool flag = usedInOneFunc(GV, oneFunc);
if (!flag)
return false;
if (!oneFunc)
@@ -685,27 +682,22 @@ static bool canDemoteGlobalVar(const GlobalVariable *gv, Function const *&f) {
}
static bool useFuncSeen(const Constant *C,
- DenseMap<const Function *, bool> &seenMap) {
+ const SmallPtrSetImpl<const Function *> &SeenSet) {
for (const User *U : C->users()) {
if (const Constant *cu = dyn_cast<Constant>(U)) {
- if (useFuncSeen(cu, seenMap))
+ if (useFuncSeen(cu, SeenSet))
return true;
} else if (const Instruction *I = dyn_cast<Instruction>(U)) {
- const BasicBlock *bb = I->getParent();
- if (!bb)
- continue;
- const Function *caller = bb->getParent();
- if (!caller)
- continue;
- if (seenMap.contains(caller))
- return true;
+ if (const Function *Caller = I->getFunction())
+ if (SeenSet.contains(Caller))
+ return true;
}
}
return false;
}
void NVPTXAsmPrinter::emitDeclarations(const Module &M, raw_ostream &O) {
- DenseMap<const Function *, bool> seenMap;
+ SmallPtrSet<const Function *, 32> SeenSet;
for (const Function &F : M) {
if (F.getAttributes().hasFnAttr("nvptx-libcall-callee")) {
emitDeclaration(&F, O);
@@ -731,7 +723,7 @@ void NVPTXAsmPrinter::emitDeclarations(const Module &M, raw_ostream &O) {
}
// Emit a declaration of this function if the function that
// uses this constant expr has already been seen.
- if (useFuncSeen(C, seenMap)) {
+ if (useFuncSeen(C, SeenSet)) {
emitDeclaration(&F, O);
break;
}
@@ -739,23 +731,19 @@ void NVPTXAsmPrinter::emitDeclarations(const Module &M, raw_ostream &O) {
if (!isa<Instruction>(U))
continue;
- const Instruction *instr = cast<Instruction>(U);
- const BasicBlock *bb = instr->getParent();
- if (!bb)
- continue;
- const Function *caller = bb->getParent();
- if (!caller)
+ const Function *Caller = cast<Instruction>(U)->getFunction();
+ if (!Caller)
continue;
// If a caller has already been seen, then the caller is
// appearing in the module before the callee. so print out
// a declaration for the callee.
- if (seenMap.contains(caller)) {
+ if (SeenSet.contains(Caller)) {
emitDeclaration(&F, O);
break;
}
}
- seenMap[&F] = true;
+ SeenSet.insert(&F);
}
for (const GlobalAlias &GA : M.aliases())
emitAliasDeclaration(&GA, O);
@@ -818,7 +806,7 @@ void NVPTXAsmPrinter::emitGlobals(const Module &M) {
// Print out module-level global variables in proper order
for (const GlobalVariable *GV : Globals)
- printModuleLevelGV(GV, OS2, /*processDemoted=*/false, STI);
+ printModuleLevelGV(GV, OS2, /*ProcessDemoted=*/false, STI);
OS2 << '\n';
@@ -839,16 +827,14 @@ void NVPTXAsmPrinter::emitGlobalAlias(const Module &M, const GlobalAlias &GA) {
void NVPTXAsmPrinter::emitHeader(Module &M, raw_ostream &O,
const NVPTXSubtarget &STI) {
- O << "//\n";
- O << "// Generated by LLVM NVPTX Back-End\n";
- O << "//\n";
- O << "\n";
+ const unsigned PTXVersion = STI.getPTXVersion();
- unsigned PTXVersion = STI.getPTXVersion();
- O << ".version " << (PTXVersion / 10) << "." << (PTXVersion % 10) << "\n";
-
- O << ".target ";
- O << STI.getTargetName();
+ O << "//\n"
+ "// Generated by LLVM NVPTX Back-End\n"
+ "//\n"
+ "\n"
+ << ".version " << (PTXVersion / 10) << "." << (PTXVersion % 10) << "\n"
+ << ".target " << STI.getTargetName();
const NVPTXTargetMachine &NTM = static_cast<const NVPTXTargetMachine &>(TM);
if (NTM.getDrvInterface() == NVPTX::NVCL)
@@ -871,16 +857,9 @@ void NVPTXAsmPrinter::emitHeader(Module &M, raw_ostream &O,
if (HasFullDebugInfo)
O << ", debug";
- O << "\n";
-
- O << ".address_size ";
- if (NTM.is64Bit())
- O << "64";
- else
- O << "32";
- O << "\n";
-
- O << "\n";
+ O << "\n"
+ << ".address_size " << (NTM.is64Bit() ? "64" : "32") << "\n"
+ << "\n";
}
bool NVPTXAsmPrinter::doFinalization(Module &M) {
@@ -928,41 +907,28 @@ void NVPTXAsmPrinter::emitLinkageDirective(const GlobalValue *V,
raw_ostream &O) {
if (static_cast<NVPTXTargetMachine &>(TM).getDrvInterface() == NVPTX::CUDA) {
if (V->hasExternalLinkage()) {
- if (isa<GlobalVariable>(V)) {
- const GlobalVariable *GVar = cast<GlobalVariable>(V);
- if (GVar) {
- if (GVar->hasInitializer())
- O << ".visible ";
- else
- O << ".extern ";
- }
- } else if (V->isDeclaration())
+ if (const auto *GVar = dyn_cast<GlobalVariable>(V))
+ O << (GVar->hasInitializer() ? ".visible " : ".extern ");
+ else if (V->isDeclaration())
O << ".extern ";
else
O << ".visible ";
} else if (V->hasAppendingLinkage()) {
- std::string msg;
- msg.append("Error: ");
- msg.append("Symbol ");
- if (V->hasName())
- msg.append(std::string(V->getName()));
- msg.append("has unsupported appending linkage type");
- llvm_unreachable(msg.c_str());
- } else if (!V->hasInternalLinkage() &&
- !V->hasPrivateLinkage()) {
+ report_fatal_error("Symbol '" + (V->hasName() ? V->getName() : "") +
+ "' has unsupported appending linkage type");
+ } else if (!V->hasInternalLinkage() && !V->hasPrivateLinkage()) {
O << ".weak ";
}
}
}
void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
- raw_ostream &O, bool processDemoted,
+ raw_ostream &O, bool ProcessDemoted,
const NVPTXSubtarget &STI) {
// Skip meta data
- if (GVar->hasSection()) {
+ if (GVar->hasSection())
if (GVar->getSection() == "llvm.metadata")
return;
- }
// Skip LLVM intrinsic global variables
if (GVar->getName().starts_with("llvm.") ||
@@ -1069,20 +1035,20 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
}
if (GVar->hasPrivateLinkage()) {
- if (strncmp(GVar->getName().data(), "unrollpragma", 12) == 0)
+ if (GVar->getName().starts_with("unrollpragma"))
return;
// FIXME - need better way (e.g. Metadata) to avoid generating this global
- if (strncmp(GVar->getName().data(), "filename", 8) == 0)
+ if (GVar->getName().starts_with("filename"))
return;
if (GVar->use_empty())
return;
}
- const Function *demotedFunc = nullptr;
- if (!processDemoted && canDemoteGlobalVar(GVar, demotedFunc)) {
+ const Function *DemotedFunc = nullptr;
+ if (!ProcessDemoted && canDemoteGlobalVar(GVar, DemotedFunc)) {
O << "// " << GVar->getName() << " has been demoted\n";
- localDecls[demotedFunc].push_back(GVar);
+ localDecls[DemotedFunc].push_back(GVar);
return;
}
@@ -1090,17 +1056,14 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
emitPTXAddressSpace(GVar->getAddressSpace(), O);
if (isManaged(*GVar)) {
- if (STI.getPTXVersion() < 40 || STI.getSmVersion() < 30) {
+ if (STI.getPTXVersion() < 40 || STI.getSmVersion() < 30)
report_fatal_error(
".attribute(.managed) requires PTX version >= 4.0 and sm_30");
- }
O << " .attribute(.managed)";
}
- if (MaybeAlign A = GVar->getAlign())
- O << " .align " << A->value();
- else
- O << " .align " << (int)DL.getPrefTypeAlign(ETy).value();
+ O << " .align "
+ << GVar->getAlign().value_or(DL.getPrefTypeAlign(ETy)).value();
if (ETy->isFloatingPointTy() || ETy->isPointerTy() ||
(ETy->isIntegerTy() && ETy->getScalarSizeInBits() <= 64)) {
@@ -1137,8 +1100,6 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
}
}
} else {
- uint64_t ElementSize = 0;
-
// Although PTX has direct support for struct type and array type and
// LLVM IR is very similar to PTX, the LLVM CodeGen does not support for
// targets that support these high level field accesses. Structs, arrays
@@ -1147,8 +1108,8 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
case Type::IntegerTyID: // Integers larger than 64 bits
case Type::StructTyID:
case Type::ArrayTyID:
- case Type::FixedVectorTyID:
- ElementSize = DL.getTypeStoreSize(ETy);
+ case Type::FixedVectorTyID: {
+ const uint64_t ElementSize = DL.getTypeStoreSize(ETy);
// Ptx allows variable initilization only for constant and
// global state spaces.
if (((GVar->getAddressSpace() == ADDRESS_SPACE_GLOBAL) ||
@@ -1159,7 +1120,7 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
AggBuffer aggBuffer(ElementSize, *this);
bufferAggregateConstant(Initializer, &aggBuffer);
if (aggBuffer.numSymbols()) {
- unsigned int ptrSize = MAI->getCodePointerSize();
+ const unsigned int ptrSize = MAI->getCodePointerSize();
if (ElementSize % ptrSize ||
!aggBuffer.allSymbolsAligned(ptrSize)) {
// Print in bytes and use the mask() operator for pointers.
@@ -1190,22 +1151,17 @@ void NVPTXAsmPrinter::printModuleLevelGV(const GlobalVariable *GVar,
} else {
O << " .b8 ";
getSymbol(GVar)->print(O, MAI);
- if (ElementSize) {
- O << "[";
- O << ElementSize;
- O << "]";
- }
+ if (ElementSize)
+ O << "[" << ElementSize << "]";
}
} else {
O << " .b8 ";
getSymbol(GVar)->print(O, MAI);
- if (ElementSize) {
- O << "[";
- O << ElementSize;
- O << "]";
- }
+ if (ElementSize)
+ O << "[" << ElementSize << "]";
}
break;
+ }
default:
llvm_unreachable("type not supported yet");
}
@@ -1229,7 +1185,7 @@ void NVPTXAsmPrinter::AggBuffer::printSymbol(unsigned nSym, raw_ostream &os) {
Name->print(os, AP.MAI);
}
} else if (const ConstantExpr *CExpr = dyn_cast<ConstantExpr>(v0)) {
- const MCExpr *Expr = AP.lowerConstantForGV(cast<Constant>(CExpr), false);
+ const MCExpr *Expr = AP.lowerConstantForGV(CExpr, false);
AP.printMCExpr(*Expr, os);
} else
llvm_unreachable("symbol type unknown");
@@ -1298,18 +1254,18 @@ void NVPTXAsmPrinter::AggBuffer::printWords(raw_ostream &os) {
}
}
-void NVPTXAsmPrinter::emitDemotedVars(const Function *f, raw_ostream &O) {
- auto It = localDecls.find(f);
+void NVPTXAsmPrinter::emitDemotedVars(const Function *F, raw_ostream &O) {
+ auto It = localDecls.find(F);
if (It == localDecls.end())
return;
- std::vector<const GlobalVariable *> &gvars = It->second;
+ ArrayRef<const GlobalVariable *> GVars = It->second;
const NVPTXTargetMachine &NTM = static_cast<const NVPTXTargetMachine &>(TM);
const NVPTXSubtarget &STI =
*static_cast<const NVPTXSubtarget *>(NTM.getSubtargetImpl());
- for (const GlobalVariable *GV : gvars) {
+ for (const GlobalVariable *GV : GVars) {
O << "\t// demoted variable\n\t";
printModuleLevelGV(GV, O, /*processDemoted=*/true, STI);
}
@@ -1344,13 +1300,11 @@ NVPTXAsmPrinter::getPTXFundamentalTypeStr(Type *Ty, bool useB4PTR) const {
unsigned NumBits = cast<IntegerType>(Ty)->getBitWidth();
if (NumBits == 1)
return "pred";
- else if (NumBits <= 64) {
+ if (NumBits <= 64) {
std::string name = "u";
return name + utostr(NumBits);
- } else {
- llvm_unreachable("Integer too large");
- break;
}
+ llvm_unreachable("Integer too large");
break;
}
case Type::BFloatTyID:
@@ -1393,16 +1347,14 @@ void NVPTXAsmPrinter::emitPTXGlobalVariable(const GlobalVariable *GVar,
O << ".";
emitPTXAddressSpace(GVar->getType()->getAddressSpace(), O);
if (isManaged(*GVar)) {
- if (STI.getPTXVersion() < 40 || STI.getSmVersion() < 30) {
+ if (STI.getPTXVersion() < 40 || STI.getSmVersion() < 30)
report_fatal_error(
".attribute(.managed) requires PTX version >= 4.0 and sm_30");
- }
+
O << " .attribute(.managed)";
}
- if (MaybeAlign A = GVar->getAlign())
- O << " .align " << A->value();
- else
- O << " .align " << (int)DL.getPrefTypeAlign(ETy).value();
+ O << " .align "
+ << GVar->getAlign().value_or(DL.getPrefTypeAlign(ETy)).value();
// Special case for i128
if (ETy->isIntegerTy(128)) {
@@ -1413,9 +1365,7 @@ void NVPTXAsmPrinter::emitPTXGlobalVariable(const GlobalVariable *GVar,
}
if (ETy->isFloatingPointTy() || ETy->isIntOrPtrTy()) {
- O << " .";
- O << getPTXFundamentalTypeStr(ETy);
- O << " ";
+ O << " ." << getPTXFundamentalTypeStr(ETy) << " ";
getSymbol(GVar)->print(O, MAI);
return;
}
@@ -1446,16 +1396,13 @@ void NVPTXAsmPrinter::emitPTXGlobalVariable(const GlobalVariable *GVar,
void NVPTXAsmPrinter::emitFunctionParamList(const Function *F, raw_ostream &O) {
const DataLayout &DL = getDataLayout();
- const AttributeList &PAL = F->getAttributes();
const NVPTXSubtarget &STI = TM.getSubtarget<NVPTXSubtarget>(*F);
const auto *TLI = cast<NVPTXTargetLowering>(STI.getTargetLowering());
const NVPTXMachineFunctionInfo *MFI =
MF ? MF->getInfo<NVPTXMachineFunctionInfo>() : nullptr;
- Function::const_arg_iterator I, E;
- unsigned paramIndex = 0;
- bool first = true;
- bool isKernelFunc = isKernelFunction(*F);
+ bool IsFirst = true;
+ const bool IsKernelFunc = isKernelFunction(*F);
if (F->arg_empty() && !F->isVarArg()) {
O << "()";
@@ -1464,161 +1411,143 @@ void NVPTXAsmPrinter::emitFunctionParamList(const Function *F, raw_ostream &O) {
O << "(\n";
- for (I = F->arg_begin(), E = F->arg_end(); I != E; ++I, paramIndex++) {
- Type *Ty = I->getType();
+ for (const Argument &Arg : F->args()) {
+ Type *Ty = Arg.getType();
+ const std::string ParamSym = TLI->getParamName(F, Arg.getArgNo());
- if (!first)
+ if (!IsFirst)
O << ",\n";
- first = false;
+ IsFirst = false;
// Handle image/sampler parameters
- if (isKernelFunc) {
- if (isSampler(*I) || isImage(*I)) {
- std::string ParamSym;
- raw_string_ostream ParamStr(ParamSym);
- ParamStr << F->getName() << "_param_" << paramIndex;
- ParamStr.flush();
- bool EmitImagePtr = !MFI || !MFI->checkImageHandleSymbol(ParamSym);
- if (isImage(*I)) {
- if (isImageWriteOnly(*I) || isImageReadWrite(*I)) {
- if (EmitImagePtr)
- O << "\t.param .u64 .ptr .surfref ";
- else
- O << "\t.param .surfref ";
- O << TLI->getParamName(F, paramIndex);
- }
- else { // Default image is read_only
- if (EmitImagePtr)
- O << "\t.param .u64 .ptr .texref ";
- else
- O << "\t.param .texref ";
- O << TLI->getParamName(F, paramIndex);
- }
- } else {
- if (EmitImagePtr)
- O << "\t.param .u64 .ptr .samplerref ";
- else
- O << "\t.param .samplerref ";
- O << TLI->getParamName(F, paramIndex);
- }
+ if (IsKernelFunc) {
+ const bool IsSampler = isSampler(Arg);
+ const bool IsTexture = !IsSampler && isImageReadOnly(Arg);
+ const bool IsSurface = !IsSampler && !IsTexture &&
+ (isImageReadWrite(Arg) || isImageWriteOnly(Arg));
+ if (IsSampler || IsTexture || IsSurface) {
+ const bool EmitImgPtr = !MFI || !MFI->checkImageHandleSymbol(ParamSym);
+ O << "\t.param ";
+ if (EmitImgPtr)
+ O << ".u64 .ptr ";
+
+ if (IsSampler)...
[truncated]
|
justinfargnoli
approved these changes
Feb 15, 2025
sivan-shani
pushed a commit
to sivan-shani/llvm-project
that referenced
this pull request
Feb 24, 2025
…nfo (NFC)" (llvm#127277) Originally landed in llvm#126800 This version fixes a typo in NVPTXAsmPrinter::emitFunctionParamList where .surfref was erroneously replaced with .samplerref.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Originally landed in #126800
This version fixes a typo in NVPTXAsmPrinter::emitFunctionParamList where .surfref was erroneously replaced with .samplerref.