[llvm] [RISCV] When VLEN is exactly known, prefer VLMAX encoding for vsetvli (PR #75412)

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git-clang-format --diff 12af9c833797b579cde97b2378cb3a3153edbed4 d69ef3d7d2b4b94388f75eaa550e79f323c2a8f6 -- llvm/lib/Target/RISCV/RISCVISelLowering.cpp
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View the diff from clang-format here.
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``````````diff
diff --git a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
index 91bccc77f9..a5c63705ba 100644
--- a/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ b/llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -8657,8 +8657,8 @@ SDValue RISCVTargetLowering::LowerINTRINSIC_W_CHAIN(SDValue Op,
     MVT VT = Op->getSimpleValueType(0);
     MVT ContainerVT = getContainerForFixedLengthVector(VT);
 
-    SDValue VL = getVLOp(VT.getVectorNumElements(), ContainerVT, DL, DAG,
-                         Subtarget);
+    SDValue VL =
+        getVLOp(VT.getVectorNumElements(), ContainerVT, DL, DAG, Subtarget);
     SDValue IntID = DAG.getTargetConstant(VlsegInts[NF - 2], DL, XLenVT);
     auto *Load = cast<MemIntrinsicSDNode>(Op);
     SmallVector<EVT, 9> ContainerVTs(NF, ContainerVT);
@@ -8793,8 +8793,8 @@ SDValue RISCVTargetLowering::LowerINTRINSIC_VOID(SDValue Op,
     MVT VT = Op->getOperand(2).getSimpleValueType();
     MVT ContainerVT = getContainerForFixedLengthVector(VT);
 
-    SDValue VL = getVLOp(VT.getVectorNumElements(), ContainerVT, DL, DAG,
-                         Subtarget);
+    SDValue VL =
+        getVLOp(VT.getVectorNumElements(), ContainerVT, DL, DAG, Subtarget);
     SDValue IntID = DAG.getTargetConstant(VssegInts[NF - 2], DL, XLenVT);
     SDValue Ptr = Op->getOperand(NF + 2);
 
@@ -9838,7 +9838,8 @@ RISCVTargetLowering::lowerFixedLengthVectorLoadToRVV(SDValue Op,
   MVT XLenVT = Subtarget.getXLenVT();
   MVT ContainerVT = getContainerForFixedLengthVector(VT);
 
-  SDValue VL = getVLOp(VT.getVectorNumElements(), ContainerVT, DL, DAG, Subtarget);
+  SDValue VL =
+      getVLOp(VT.getVectorNumElements(), ContainerVT, DL, DAG, Subtarget);
 
   bool IsMaskOp = VT.getVectorElementType() == MVT::i1;
   SDValue IntID = DAG.getTargetConstant(
@@ -9882,8 +9883,8 @@ RISCVTargetLowering::lowerFixedLengthVectorStoreToRVV(SDValue Op,
 
   MVT ContainerVT = getContainerForFixedLengthVector(VT);
 
-  SDValue VL = getVLOp(VT.getVectorNumElements(), ContainerVT, DL, DAG,
-                       Subtarget);
+  SDValue VL =
+      getVLOp(VT.getVectorNumElements(), ContainerVT, DL, DAG, Subtarget);
 
   SDValue NewValue =
       convertToScalableVector(ContainerVT, StoreVal, DAG, Subtarget);

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https://github.com/llvm/llvm-project/pull/75412