[llvm-exegesis] Remove Assembler Tests

[aidengrossman]

Summary

The Assembler tests have been disabled for years in tree and at this
point don't test anything other than common MC infrastructure that is
already tested in other parts of the tree. This patch removes them due
to the mentioned reasons.

[aidengrossman]

I might just be missing something here, but the only thing these unittest files seem to be testing is common MC infrastructure. On top of that they've been disabled for an incredibly long time as mentioned in the commit message.

llvm/unittests/tools/llvm-exegesis/ARM/AssemblerTest.cpp

-//===-- AssemblerTest.cpp ---------------------------------------*- C++ -*-===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#include "../Common/AssemblerUtils.h"
-#include "ARMInstrInfo.h"
-
-namespace llvm {
-namespace exegesis {
-namespace {
-
-class ARMMachineFunctionGeneratorTest
-    : public MachineFunctionGeneratorBaseTest {
-protected:
-  ARMMachineFunctionGeneratorTest()
-      : MachineFunctionGeneratorBaseTest("armv7-none-linux-gnueabi", "") {}
-
-  static void SetUpTestCase() {
-    LLVMInitializeARMTargetInfo();
-    LLVMInitializeARMTargetMC();
-    LLVMInitializeARMTarget();
-    LLVMInitializeARMAsmPrinter();
-  }
-};
-
-TEST_F(ARMMachineFunctionGeneratorTest, DISABLED_JitFunction) {
-  Check({}, MCInst(), 0x1e, 0xff, 0x2f, 0xe1);
-}
-
-TEST_F(ARMMachineFunctionGeneratorTest, DISABLED_JitFunctionADDrr) {
-  Check({{ARM::R0, APInt()}},
-        MCInstBuilder(ARM::ADDrr)
-            .addReg(ARM::R0)
-            .addReg(ARM::R0)
-            .addReg(ARM::R0)
-            .addImm(ARMCC::AL)
-            .addReg(0)
-            .addReg(0),
-        0x00, 0x00, 0x80, 0xe0, 0x1e, 0xff, 0x2f, 0xe1);
-}
-
-} // namespace
-} // namespace exegesis
-} // namespace llvm

llvm/unittests/tools/llvm-exegesis/ARM/CMakeLists.txt

-add_llvm_exegesis_unittest_includes(
-  ${LLVM_MAIN_SRC_DIR}/lib/Target/ARM
-  ${LLVM_BINARY_DIR}/lib/Target/ARM
-  ${LLVM_MAIN_SRC_DIR}/tools/llvm-exegesis/lib
-  )
-
-add_llvm_exegesis_unittest_link_components(
-  Core
-  MC
-  MCParser
-  Object
-  Support
-  Symbolize
-  ARM
-  )
-
-add_llvm_exegesis_unittest_sources(
-  AssemblerTest.cpp
-  )

llvm/unittests/tools/llvm-exegesis/CMakeLists.txt

 function(add_llvm_exegesis_unittest_link_libraries libs)
   set(exegesis_link_libraries ${exegesis_link_libraries} ${ARGV} PARENT_SCOPE)
 endfunction()
 
 
 if(LLVM_TARGETS_TO_BUILD MATCHES "X86")
   include(X86/CMakeLists.txt)
 endif()
-if(LLVM_TARGETS_TO_BUILD MATCHES "ARM")
-  include(ARM/CMakeLists.txt)
-endif()
 if(LLVM_TARGETS_TO_BUILD MATCHES "AArch64")
   include(AArch64/CMakeLists.txt)
 endif()
 if(LLVM_TARGETS_TO_BUILD MATCHES "PowerPC")
   include(PowerPC/CMakeLists.txt)
 endif()
 if(LLVM_TARGETS_TO_BUILD MATCHES "Mips")
   include(Mips/CMakeLists.txt)

llvm/unittests/tools/llvm-exegesis/X86/AssemblerTest.cpp

-//===-- AssemblerTest.cpp ---------------------------------------*- C++ -*-===//
-//
-// 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
-//
-//===----------------------------------------------------------------------===//
-
-#include "../Common/AssemblerUtils.h"
-#include "X86InstrInfo.h"
-
-namespace llvm {
-namespace exegesis {
-
-void InitializeX86ExegesisTarget();
-
-namespace {
-
-using X86::EAX;
-using X86::MOV32ri;
-using X86::MOV64ri32;
-using X86::RAX;
-using X86::XOR32rr;
-
-class X86MachineFunctionGeneratorTest
-    : public MachineFunctionGeneratorBaseTest {
-protected:
-  X86MachineFunctionGeneratorTest()
-      : MachineFunctionGeneratorBaseTest("x86_64-unknown-linux", "haswell") {}
-
-  static void SetUpTestCase() {
-    LLVMInitializeX86TargetInfo();
-    LLVMInitializeX86TargetMC();
-    LLVMInitializeX86Target();
-    LLVMInitializeX86AsmPrinter();
-    InitializeX86ExegesisTarget();
-  }
-};
-
-TEST_F(X86MachineFunctionGeneratorTest, DISABLED_JitFunction) {
-  Check({}, MCInst(), 0xc3);
-}
-
-TEST_F(X86MachineFunctionGeneratorTest, DISABLED_JitFunctionXOR32rr_X86) {
-  Check({{EAX, APInt(32, 1)}},
-        MCInstBuilder(XOR32rr).addReg(EAX).addReg(EAX).addReg(EAX),
-        // mov eax, 1
-        0xb8, 0x01, 0x00, 0x00, 0x00,
-        // xor eax, eax
-        0x31, 0xc0, 0xc3);
-}
-
-TEST_F(X86MachineFunctionGeneratorTest, DISABLED_JitFunctionMOV64ri) {
-  Check({}, MCInstBuilder(MOV64ri32).addReg(RAX).addImm(42), 0x48, 0xc7, 0xc0,
-        0x2a, 0x00, 0x00, 0x00, 0xc3);
-}
-
-TEST_F(X86MachineFunctionGeneratorTest, DISABLED_JitFunctionMOV32ri) {
-  Check({}, MCInstBuilder(MOV32ri).addReg(EAX).addImm(42), 0xb8, 0x2a, 0x00,
-        0x00, 0x00, 0xc3);
-}
-
-} // namespace
-} // namespace exegesis
-} // namespace llvm

llvm/unittests/tools/llvm-exegesis/X86/CMakeLists.txt

 add_llvm_exegesis_unittest_includes(
   ${LLVM_MAIN_SRC_DIR}/lib/Target/X86
   ${LLVM_BINARY_DIR}/lib/Target/X86
   ${LLVM_MAIN_SRC_DIR}/tools/llvm-exegesis/lib
   )
 
 add_llvm_exegesis_unittest_sources(
-  AssemblerTest.cpp
   BenchmarkResultTest.cpp
   RegisterAliasingTest.cpp
   SchedClassResolutionTest.cpp
   SnippetFileTest.cpp
   SnippetGeneratorTest.cpp
   SnippetRepetitorTest.cpp
   TargetTest.cpp
   )