[PATCH] D125067: [RISCV] Add RISCVISD::FCLASS_VL.

[Han-Kuan Chen via Phabricator via llvm-commits]

HanKuanChen created this revision.
HanKuanChen added reviewers: craig.topper, frasercrmck.
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Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D125067

Files:
  llvm/lib/Target/RISCV/RISCVISelLowering.cpp
  llvm/lib/Target/RISCV/RISCVISelLowering.h
  llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td


Index: llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td
===================================================================
--- llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td
+++ llvm/lib/Target/RISCV/RISCVInstrInfoVVLPatterns.td
@@ -97,6 +97,13 @@
 def riscv_fminnum_vl   : SDNode<"RISCVISD::FMINNUM_VL",  SDT_RISCVFPBinOp_VL>;
 def riscv_fmaxnum_vl   : SDNode<"RISCVISD::FMAXNUM_VL",  SDT_RISCVFPBinOp_VL>;
 
+def riscv_fclass_vl : SDNode<"RISCVISD::FCLASS_VL",
+                             SDTypeProfile<1, 3, [SDTCisInt<0>, SDTCisVec<0>,
+                                                  SDTCisFP<1>, SDTCisVec<1>,
+                                                  SDTCisSameSizeAs<0, 1>,
+                                                  SDTCVecEltisVT<2, i1>,
+                                                  SDTCisSameNumEltsAs<0, 2>,
+                                                  SDTCisVT<3, XLenVT>]>>;
 def SDT_RISCVVecFMA_VL : SDTypeProfile<1, 5, [SDTCisSameAs<0, 1>,
                                               SDTCisSameAs<0, 2>,
                                               SDTCisSameAs<0, 3>,
@@ -1471,6 +1478,12 @@
                                 VLOpFrag),
             (!cast<Instruction>("PseudoVFSGNJ_V"#vti.ScalarSuffix#"_"# vti.LMul.MX)
                  vti.RegClass:$rs1, vti.ScalarRegClass:$rs2, GPR:$vl, vti.Log2SEW)>;
+
+  // 14.14. Vector Floating-Point Classify Instruction
+  def : Pat<(riscv_fclass_vl (vti.Vector vti.RegClass:$rs2), (vti.Mask true_mask),
+                             VLOpFrag),
+            (!cast<Instruction>("PseudoVFCLASS_V_"# vti.LMul.MX)
+                 vti.RegClass:$rs2, GPR:$vl, vti.Log2SEW)>;
 }
 
 foreach fvti = AllFloatVectors in {
Index: llvm/lib/Target/RISCV/RISCVISelLowering.h
===================================================================
--- llvm/lib/Target/RISCV/RISCVISelLowering.h
+++ llvm/lib/Target/RISCV/RISCVISelLowering.h
@@ -227,6 +227,7 @@
   FNEG_VL,
   FABS_VL,
   FSQRT_VL,
+  FCLASS_VL,
   FMA_VL,
   FCOPYSIGN_VL,
   SMIN_VL,
Index: llvm/lib/Target/RISCV/RISCVISelLowering.cpp
===================================================================
--- llvm/lib/Target/RISCV/RISCVISelLowering.cpp
+++ llvm/lib/Target/RISCV/RISCVISelLowering.cpp
@@ -11161,6 +11161,7 @@
   NODE_NAME_CASE(FNEG_VL)
   NODE_NAME_CASE(FABS_VL)
   NODE_NAME_CASE(FSQRT_VL)
+  NODE_NAME_CASE(FCLASS_VL)
   NODE_NAME_CASE(FMA_VL)
   NODE_NAME_CASE(FCOPYSIGN_VL)
   NODE_NAME_CASE(SMIN_VL)


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