[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 `clang-armv8-quick` running on `linaro-clang-armv8-quick` while building `llvm` at step 5 "ninja check 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/154/builds/10669

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

```
Step 5 (ninja check 1) failure: stage 1 checked (failure)
...
[53/84] Linking CXX executable unittests/Passes/Plugins/PluginsTests
[54/84] Linking CXX executable tools/clang/tools/extra/unittests/clang-move/ClangMoveTests
[55/84] Linking CXX executable tools/clang/tools/extra/unittests/clang-change-namespace/ClangChangeNamespaceTests
[56/84] Linking CXX executable tools/clang/unittests/Support/ClangSupportTests
[57/84] Linking CXX executable tools/clang/unittests/AST/ByteCode/InterpTests
[58/84] Linking CXX executable tools/clang/tools/extra/include-cleaner/unittests/ClangIncludeCleanerTests
[59/84] Linking CXX executable tools/clang/unittests/Index/IndexTests
[60/84] Linking CXX executable tools/clang/unittests/CrossTU/CrossTUTests
[61/84] Linking CXX executable tools/clang/unittests/Analysis/ClangAnalysisTests
[62/84] Building CXX object unittests/CodeGen/GlobalISel/CMakeFiles/GlobalISelTests.dir/CSETest.cpp.o
FAILED: unittests/CodeGen/GlobalISel/CMakeFiles/GlobalISelTests.dir/CSETest.cpp.o 
/usr/local/bin/c++ -DGTEST_HAS_RTTI=0 -DLLVM_BUILD_STATIC -D_DEBUG -D_FILE_OFFSET_BITS=64 -D_GLIBCXX_ASSERTIONS -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/tcwg-buildbot/worker/clang-armv8-quick/stage1/unittests/CodeGen/GlobalISel -I/home/tcwg-buildbot/worker/clang-armv8-quick/llvm/llvm/unittests/CodeGen/GlobalISel -I/home/tcwg-buildbot/worker/clang-armv8-quick/stage1/include -I/home/tcwg-buildbot/worker/clang-armv8-quick/llvm/llvm/include -I/home/tcwg-buildbot/worker/clang-armv8-quick/llvm/third-party/unittest/googletest/include -I/home/tcwg-buildbot/worker/clang-armv8-quick/llvm/third-party/unittest/googlemock/include -fPIC -fno-semantic-interposition -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 -std=c++17  -Wno-variadic-macros -Wno-gnu-zero-variadic-macro-arguments -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -Wno-suggest-override -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 /home/tcwg-buildbot/worker/clang-armv8-quick/llvm/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp
../llvm/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:84:14: error: no member named 'setFlag' in 'llvm::MachineInstrBuilder'; did you mean 'setMIFlag'?
   84 |     MIBFAdd2.setFlag(MachineInstr::FmNsz);
      |              ^~~~~~~
      |              setMIFlag
../llvm/llvm/include/llvm/CodeGen/MachineInstrBuilder.h:280:30: note: 'setMIFlag' declared here
  280 |   const MachineInstrBuilder &setMIFlag(MachineInstr::MIFlag Flag) const {
      |                              ^
../llvm/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:87:13: error: no member named 'clearFlag' in 'llvm::MachineInstrBuilder'; did you mean to use '->' instead of '.'?
   87 |     MIBFAdd2.clearFlag(MachineInstr::FmNsz);
      |             ^
      |             ->
../llvm/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:97:14: error: no member named 'setFlag' in 'llvm::MachineInstrBuilder'; did you mean 'setMIFlag'?
   97 |     MIBFSub2.setFlag(MachineInstr::FmNoNans);
      |              ^~~~~~~
      |              setMIFlag
../llvm/llvm/include/llvm/CodeGen/MachineInstrBuilder.h:280:30: note: 'setMIFlag' declared here
  280 |   const MachineInstrBuilder &setMIFlag(MachineInstr::MIFlag Flag) const {
      |                              ^
../llvm/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:100:13: error: no member named 'clearFlag' in 'llvm::MachineInstrBuilder'; did you mean to use '->' instead of '.'?
  100 |     MIBFSub2.clearFlag(MachineInstr::FmNoNans);
      |             ^
      |             ->
../llvm/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:110:14: error: no member named 'setFlag' in 'llvm::MachineInstrBuilder'; did you mean 'setMIFlag'?
  110 |     MIBFMul2.setFlag(MachineInstr::FmNoNans);
      |              ^~~~~~~
      |              setMIFlag
../llvm/llvm/include/llvm/CodeGen/MachineInstrBuilder.h:280:30: note: 'setMIFlag' declared here
  280 |   const MachineInstrBuilder &setMIFlag(MachineInstr::MIFlag Flag) const {
      |                              ^
../llvm/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:113:13: error: no member named 'clearFlag' in 'llvm::MachineInstrBuilder'; did you mean to use '->' instead of '.'?
  113 |     MIBFMul2.clearFlag(MachineInstr::FmNoNans);
      |             ^
      |             ->
../llvm/llvm/unittests/CodeGen/GlobalISel/CSETest.cpp:123:14: error: no member named 'setFlag' in 'llvm::MachineInstrBuilder'; did you mean 'setMIFlag'?
  123 |     MIBFDiv2.setFlag(MachineInstr::FmNoNans);
      |              ^~~~~~~
      |              setMIFlag

```

</details>

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