[RISCV] Merge some of the Sifive decoder tables. (#128794)

This makes a single table for vector and another table for system. I
left sf.cease out of system because its not in custom encoding space.
The other system instructions are in the custom part of OPC_SYSTEM.

1 files changed, 13 insertions, 20 deletions

diff --git a/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp b/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp
index 1025b57..9b3104e 100644
--- a/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp
+++ b/llvm/lib/Target/RISCV/Disassembler/RISCVDisassembler.cpp
@@ -631,6 +631,15 @@ static constexpr FeatureBitset XqciFeatureGroup = {
     RISCV::FeatureVendorXqcisls,
 };
 
+static constexpr FeatureBitset XSfVectorGroup = {
+    RISCV::FeatureVendorXSfvcp, RISCV::FeatureVendorXSfvqmaccdod,
+    RISCV::FeatureVendorXSfvqmaccqoq, RISCV::FeatureVendorXSfvfwmaccqqq,
+    RISCV::FeatureVendorXSfvfnrclipxfqf};
+static constexpr FeatureBitset XSfSystemGroup = {
+    RISCV::FeatureVendorXSiFivecdiscarddlone,
+    RISCV::FeatureVendorXSiFivecflushdlone,
+};
+
 DecodeStatus RISCVDisassembler::getInstruction32(MCInst &MI, uint64_t &Size,
                                                  ArrayRef<uint8_t> Bytes,
                                                  uint64_t Address,
@@ -677,26 +686,10 @@ DecodeStatus RISCVDisassembler::getInstruction32(MCInst &MI, uint64_t &Size,
                         DecoderTableXTHeadSync32, "XTHeadSync");
   TRY_TO_DECODE_FEATURE(RISCV::FeatureVendorXTHeadVdot,
                         DecoderTableXTHeadVdot32, "XTHeadVdot");
-  TRY_TO_DECODE_FEATURE(RISCV::FeatureVendorXSfvcp, DecoderTableXSfvcp32,
-                        "SiFive VCIX");
-  TRY_TO_DECODE_FEATURE(
-      RISCV::FeatureVendorXSfvqmaccdod, DecoderTableXSfvqmaccdod32,
-      "SiFive Matrix Multiplication (2x8 and 8x2) Instruction");
-  TRY_TO_DECODE_FEATURE(
-      RISCV::FeatureVendorXSfvqmaccqoq, DecoderTableXSfvqmaccqoq32,
-      "SiFive Matrix Multiplication (4x8 and 8x4) Instruction");
-  TRY_TO_DECODE_FEATURE(RISCV::FeatureVendorXSfvfwmaccqqq,
-                        DecoderTableXSfvfwmaccqqq32,
-                        "SiFive Matrix Multiplication Instruction");
-  TRY_TO_DECODE_FEATURE(RISCV::FeatureVendorXSfvfnrclipxfqf,
-                        DecoderTableXSfvfnrclipxfqf32,
-                        "SiFive FP32-to-int8 Ranged Clip Instructions");
-  TRY_TO_DECODE_FEATURE(RISCV::FeatureVendorXSiFivecdiscarddlone,
-                        DecoderTableXSiFivecdiscarddlone32,
-                        "SiFive sf.cdiscard.d.l1");
-  TRY_TO_DECODE_FEATURE(RISCV::FeatureVendorXSiFivecflushdlone,
-                        DecoderTableXSiFivecflushdlone32,
-                        "SiFive sf.cflush.d.l1");
+  TRY_TO_DECODE_FEATURE_ANY(XSfVectorGroup, DecoderTableXSfvector32,
+                            "SiFive vector extensions");
+  TRY_TO_DECODE_FEATURE_ANY(XSfSystemGroup, DecoderTableXSfsystem32,
+                            "SiFive system extensions");
   TRY_TO_DECODE_FEATURE(RISCV::FeatureVendorXSfcease, DecoderTableXSfcease32,
                         "SiFive sf.cease");
   TRY_TO_DECODE_FEATURE(RISCV::FeatureVendorXMIPSLSP, DecoderTableXmipslsp32,