[llvm] [LLVM] Add `llvm.masked.compress` intrinsic (PR #92289)

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``````````bash
git-clang-format --diff e76b257483e6c6743de0fa6eca4d0cc60e08385d e4423a1b434c086a7787594efbba96aa29e392c4 -- llvm/include/llvm/CodeGen/ISDOpcodes.h llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp llvm/lib/CodeGen/SelectionDAG/LegalizeTypes.h llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp llvm/lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp llvm/lib/CodeGen/SelectionDAG/SelectionDAGDumper.cpp llvm/lib/CodeGen/TargetLoweringBase.cpp
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``````````diff
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
index 80f645b433..4063144f47 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeIntegerTypes.cpp
@@ -87,7 +87,9 @@ void DAGTypeLegalizer::PromoteIntegerResult(SDNode *N, unsigned ResNo) {
     break;
   case ISD::MGATHER:     Res = PromoteIntRes_MGATHER(cast<MaskedGatherSDNode>(N));
     break;
-  case ISD::MCOMPRESS:   Res = PromoteIntRes_MCOMPRESS(N); break;
+  case ISD::MCOMPRESS:
+    Res = PromoteIntRes_MCOMPRESS(N);
+    break;
   case ISD::SELECT:
   case ISD::VSELECT:
   case ISD::VP_SELECT:
@@ -951,7 +953,8 @@ SDValue DAGTypeLegalizer::PromoteIntRes_MGATHER(MaskedGatherSDNode *N) {
 
 SDValue DAGTypeLegalizer::PromoteIntRes_MCOMPRESS(SDNode *N) {
   SDValue Vec = GetPromotedInteger(N->getOperand(0));
-  return DAG.getNode(ISD::MCOMPRESS, SDLoc(N), Vec.getValueType(), Vec, N->getOperand(1));
+  return DAG.getNode(ISD::MCOMPRESS, SDLoc(N), Vec.getValueType(), Vec,
+                     N->getOperand(1));
 }
 
 /// Promote the overflow flag of an overflowing arithmetic node.
@@ -1861,7 +1864,9 @@ bool DAGTypeLegalizer::PromoteIntegerOperand(SDNode *N, unsigned OpNo) {
                                                  OpNo); break;
   case ISD::MSCATTER: Res = PromoteIntOp_MSCATTER(cast<MaskedScatterSDNode>(N),
                                                   OpNo); break;
-  case ISD::MCOMPRESS: Res = PromoteIntOp_MCOMPRESS(N, OpNo); break;
+  case ISD::MCOMPRESS:
+    Res = PromoteIntOp_MCOMPRESS(N, OpNo);
+    break;
   case ISD::VP_TRUNCATE:
   case ISD::TRUNCATE:     Res = PromoteIntOp_TRUNCATE(N); break;
   case ISD::BF16_TO_FP:
diff --git a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
index ca32db26e5..ebf0f63775 100644
--- a/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/LegalizeVectorOps.cpp
@@ -1528,11 +1528,11 @@ SDValue VectorLegalizer::ExpandMCOMPRESS(SDNode *Node) {
   for (unsigned I = 0; I < NumElms; I++) {
     SDValue Idx = DAG.getVectorIdxConstant(I, DL);
 
-    SDValue ValI =
-        DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, ScalarVT, Vec, Idx);
-    SDValue OutPtr =
-        TLI.getVectorElementPointer(DAG, StackPtr, VecVT, OutPos);
-    Chain = DAG.getStore(Chain, DL, ValI, OutPtr, MachinePointerInfo::getUnknownStack(DAG.getMachineFunction()));
+    SDValue ValI = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, ScalarVT, Vec, Idx);
+    SDValue OutPtr = TLI.getVectorElementPointer(DAG, StackPtr, VecVT, OutPos);
+    Chain = DAG.getStore(
+        Chain, DL, ValI, OutPtr,
+        MachinePointerInfo::getUnknownStack(DAG.getMachineFunction()));
 
     // Skip this for last element.
     if (I < NumElms - 1) {
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 665bab6121..20461511ac 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -6722,8 +6722,7 @@ void SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I,
     setValue(&I, DAG.getNode(ISD::MCOMPRESS, sdl,
                              getValue(I.getArgOperand(0)).getValueType(),
                              getValue(I.getArgOperand(0)),
-                             getValue(I.getArgOperand(1)),
-                             Flags));
+                             getValue(I.getArgOperand(1)), Flags));
     return;
   case Intrinsic::powi:
     setValue(&I, ExpandPowI(sdl, getValue(I.getArgOperand(0)),

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https://github.com/llvm/llvm-project/pull/92289