Updated mcpu for mips-p8700 and related testcase for xmipscbop extension.

Author: ukalappa-mips

clang/test/Driver/riscv-cpus.c

@@ -186,6 +186,9 @@
 // MCPU-MIPS-P8700-SAME: "-target-feature" "+zalrsc"
 // MCPU-MIPS-P8700-SAME: "-target-feature" "+zba"
 // MCPU-MIPS-P8700-SAME: "-target-feature" "+zbb"
+// MCPU-MIPS-P8700-SAME: "-target-feature" "+xmipscbop"
+// MCPU-MIPS-P8700-SAME: "-target-feature" "+xmipscmov"
+// MCPU-MIPS-P8700-SAME: "-target-feature" "+xmipslsp"
 
 // RUN: %clang --target=riscv32 -### -c %s 2>&1 -mtune=syntacore-scr1-base | FileCheck -check-prefix=MTUNE-SYNTACORE-SCR1-BASE %s
 // MTUNE-SYNTACORE-SCR1-BASE: "-tune-cpu" "syntacore-scr1-base"

llvm/lib/Target/RISCV/RISCVProcessors.td

@@ -120,7 +120,8 @@ def MIPS_P8700 : RISCVProcessorModel<"mips-p8700",
                                       FeatureStdExtZifencei,
                                       FeatureStdExtZicsr,
                                       FeatureVendorXMIPSCMov,
-                                      FeatureVendorXMIPSLSP],
+                                      FeatureVendorXMIPSLSP,
+                                      FeatureVendorXMIPSCBOP],
                                      [TuneMIPSP8700]>;
 
 def ROCKET_RV32 : RISCVProcessorModel<"rocket-rv32",