[llvm] [GISel] Add more FP opcodes to CSE (PR #123624)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `reverse-iteration` running on `hexagon-build-03` while building `llvm` at step 6 "check_all".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/110/builds/3517

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (check_all) failure: test (failure)
...
[510/1064] Building CXX object unittests/CodeGen/CMakeFiles/CodeGenTests.dir/MachineDomTreeUpdaterTest.cpp.o
[511/1064] Building CXX object unittests/CodeGen/CMakeFiles/CodeGenTests.dir/PassManagerTest.cpp.o
[512/1064] Building CXX object unittests/CodeGen/CMakeFiles/CodeGenTests.dir/MachineInstrTest.cpp.o
[513/1064] Building CXX object unittests/CodeGen/CMakeFiles/CodeGenTests.dir/SelectionDAGPatternMatchTest.cpp.o
[514/1064] Building CXX object unittests/CodeGen/GlobalISel/CMakeFiles/GlobalISelTests.dir/GIMatchTableExecutorTest.cpp.o
[515/1064] Building CXX object unittests/DebugInfo/DWARF/CMakeFiles/DebugInfoDWARFTests.dir/DWARFExpressionCompactPrinterTest.cpp.o
[516/1064] Building CXX object unittests/CodeGen/CMakeFiles/CodeGenTests.dir/TestAsmPrinter.cpp.o
[517/1064] Building CXX object unittests/DebugInfo/DWARF/CMakeFiles/DebugInfoDWARFTests.dir/DWARFExpressionCopyBytesTest.cpp.o
[518/1064] Building CXX object unittests/CodeGen/CMakeFiles/CodeGenTests.dir/MLRegAllocDevelopmentFeatures.cpp.o
[519/1064] Building CXX object unittests/CodeGen/GlobalISel/CMakeFiles/GlobalISelTests.dir/CSETest.cpp.o
FAILED: unittests/CodeGen/GlobalISel/CMakeFiles/GlobalISelTests.dir/CSETest.cpp.o 
/local/clang+llvm-12.0.0-x86_64-linux-gnu-ubuntu-16.04/bin/clang++ -DGTEST_HAS_RTTI=0 -DLLVM_BUILD_STATIC -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/unittests/CodeGen/GlobalISel -I/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/llvm/unittests/CodeGen/GlobalISel -I/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.obj/include -I/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/llvm/include -I/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/third-party/unittest/googletest/include -I/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/third-party/unittest/googlemock/include -stdlib=libc++ -fPIC -fvisibility-inlines-hidden -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG  -Wno-variadic-macros -Wno-gnu-zero-variadic-macro-arguments -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -Wno-suggest-override -std=c++17 -MD -MT unittests/CodeGen/GlobalISel/CMakeFiles/GlobalISelTests.dir/CSETest.cpp.o -MF unittests/CodeGen/GlobalISel/CMakeFiles/GlobalISelTests.dir/CSETest.cpp.o.d -o unittests/CodeGen/GlobalISel/CMakeFiles/GlobalISelTests.dir/CSETest.cpp.o -c /local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp
/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:84:14: error: no member named 'setFlag' in 'llvm::MachineInstrBuilder'; did you mean 'setMIFlag'?
    MIBFAdd2.setFlag(MachineInstr::FmNsz);
             ^~~~~~~
             setMIFlag
/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/llvm/include/llvm/CodeGen/MachineInstrBuilder.h:280:30: note: 'setMIFlag' declared here
  const MachineInstrBuilder &setMIFlag(MachineInstr::MIFlag Flag) const {
                             ^
/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:87:13: error: no member named 'clearFlag' in 'llvm::MachineInstrBuilder'; did you mean to use '->' instead of '.'?
    MIBFAdd2.clearFlag(MachineInstr::FmNsz);
            ^
            ->
/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:97:14: error: no member named 'setFlag' in 'llvm::MachineInstrBuilder'; did you mean 'setMIFlag'?
    MIBFSub2.setFlag(MachineInstr::FmNoNans);
             ^~~~~~~
             setMIFlag
/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/llvm/include/llvm/CodeGen/MachineInstrBuilder.h:280:30: note: 'setMIFlag' declared here
  const MachineInstrBuilder &setMIFlag(MachineInstr::MIFlag Flag) const {
                             ^
/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:100:13: error: no member named 'clearFlag' in 'llvm::MachineInstrBuilder'; did you mean to use '->' instead of '.'?
    MIBFSub2.clearFlag(MachineInstr::FmNoNans);
            ^
            ->
/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:110:14: error: no member named 'setFlag' in 'llvm::MachineInstrBuilder'; did you mean 'setMIFlag'?
    MIBFMul2.setFlag(MachineInstr::FmNoNans);
             ^~~~~~~
             setMIFlag
/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/llvm/include/llvm/CodeGen/MachineInstrBuilder.h:280:30: note: 'setMIFlag' declared here
  const MachineInstrBuilder &setMIFlag(MachineInstr::MIFlag Flag) const {
                             ^
/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:113:13: error: no member named 'clearFlag' in 'llvm::MachineInstrBuilder'; did you mean to use '->' instead of '.'?
    MIBFMul2.clearFlag(MachineInstr::FmNoNans);
            ^
            ->
/local/mnt/workspace/bots/hexagon-build-03/reverse-iteration/llvm.src/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:123:14: error: no member named 'setFlag' in 'llvm::MachineInstrBuilder'; did you mean 'setMIFlag'?
    MIBFDiv2.setFlag(MachineInstr::FmNoNans);
             ^~~~~~~
             setMIFlag

```

</details>

https://github.com/llvm/llvm-project/pull/123624