[Mips][llvm-exegesis] Add a Mips target

The target does just enough to be able to run llvm-exegesis in latency
mode for at least some opcodes.

Patch by Miloš Stojanović.

Differential Revision: https://reviews.llvm.org/D68649

llvm-svn: 374590

3 files changed, 25 insertions, 0 deletions

diff --git a/llvm/lib/Target/Mips/CMakeLists.txt b/llvm/lib/Target/Mips/CMakeLists.txt
index 251d1383411..0ac2d8a687d 100644
--- a/llvm/lib/Target/Mips/CMakeLists.txt
+++ b/llvm/lib/Target/Mips/CMakeLists.txt
@@ -13,6 +13,7 @@ tablegen(LLVM MipsGenMCPseudoLowering.inc -gen-pseudo-lowering)
 tablegen(LLVM MipsGenRegisterBank.inc -gen-register-bank)
 tablegen(LLVM MipsGenRegisterInfo.inc -gen-register-info)
 tablegen(LLVM MipsGenSubtargetInfo.inc -gen-subtarget)
+tablegen(LLVM MipsGenExegesis.inc -gen-exegesis)
 
 add_public_tablegen_target(MipsCommonTableGen)
 
diff --git a/llvm/lib/Target/Mips/Mips.td b/llvm/lib/Target/Mips/Mips.td
index 0e5a5830374..a5908362e81 100644
--- a/llvm/lib/Target/Mips/Mips.td
+++ b/llvm/lib/Target/Mips/Mips.td
@@ -263,3 +263,9 @@ def Mips : Target {
   let AssemblyParserVariants = [MipsAsmParserVariant];
   let AllowRegisterRenaming = 1;
 }
+
+//===----------------------------------------------------------------------===//
+// Pfm Counters
+//===----------------------------------------------------------------------===//
+
+include "MipsPfmCounters.td"
diff --git a/llvm/lib/Target/Mips/MipsPfmCounters.td b/llvm/lib/Target/Mips/MipsPfmCounters.td
new file mode 100644
index 00000000000..c7779b474b9
--- /dev/null
+++ b/llvm/lib/Target/Mips/MipsPfmCounters.td
@@ -0,0 +1,18 @@
+//===-- MipsPfmCounters.td - Mips Hardware Counters --------*- tablegen -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This describes the available hardware counters for Mips.
+//
+//===----------------------------------------------------------------------===//
+
+def CpuCyclesPfmCounter : PfmCounter<"CYCLES">;
+
+def DefaultPfmCounters : ProcPfmCounters {
+  let CycleCounter = CpuCyclesPfmCounter;
+}
+def : PfmCountersDefaultBinding<DefaultPfmCounters>;