[flang] [llvm] [mlir] [Flang][OpenMP] Add nsw flags to OMPIRBuilder loop IV arithmetic (PR #214165)

[Yusuke MINATO via llvm-commits]

yus3710-fj wrote:

Debug builds for flang have started failing since this PR. Could you take a look?

```
[1/4] Linking CXX shared library lib/libflangFrontendTool.so.24.0git
FAILED: [code=1] lib/libflangFrontendTool.so.24.0git
: && /usr/bin/c++ -fPIC -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-dangling-reference -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-dangling-pointer -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -Wno-deprecated-copy -Wno-ctad-maybe-unsupported -fno-semantic-interposition -g -DDEBUGF18  -shared  -Wl,-z,defs -Wl,-z,nodelete -fuse-ld=gold -Wl,--gdb-index -Wl,--dependency-file=tools/flang/lib/FrontendTool/CMakeFiles/flangFrontendTool.dir/link.d -Wl,-soname,libflangFrontendTool.so.24.0git -o lib/libflangFrontendTool.so.24.0git tools/flang/lib/FrontendTool/CMakeFiles/flangFrontendTool.dir/ExecuteCompilerInvocation.cpp.o  -Wl,-rpath,"\$ORIGIN/../lib:\$ORIGIN/../lib/aarch64-unknown-linux-gnu:/path/to/build/lib:"  lib/libflangFrontend.so.24.0git  lib/libflangPasses.so.24.0git  lib/libclangDriver.so.24.0git  lib/libMLIRPass.so.24.0git  lib/libMLIRAnalysis.so.24.0git  lib/libMLIRDataLayoutInterfaces.so.24.0git  lib/libMLIRDialectUtils.so.24.0git  lib/libMLIRInferIntDivisibilityOpInterface.so.24.0git  lib/libMLIRInferStridedMetadataInterface.so.24.0git  lib/libMLIRInferTypeOpInterface.so.24.0git  lib/libMLIRLoopLikeInterface.so.24.0git  lib/libMLIRControlFlowInterfaces.so.24.0git  lib/libMLIRFunctionInterfaces.so.24.0git  lib/libMLIRCallInterfaces.so.24.0git  lib/libMLIRPresburger.so.24.0git  lib/libMLIRSideEffectInterfaces.so.24.0git  lib/libMLIRViewLikeInterface.so.24.0git  lib/libMLIRInferIntRangeInterface.so.24.0git  lib/libMLIRIR.so.24.0git  lib/libMLIRSupport.so.24.0git  lib/libLLVMPlugins.so.24.0git  lib/libclangOptions.so.24.0git  lib/libclangBasic.so.24.0git  lib/libLLVMOption.so.24.0git  lib/libLLVMSupport.so.24.0git  -Wl,-rpath-link,/path/to/build/lib && :
/path/to/llvm-project/flang/include/flang/Tools/CrossToolHelpers.h:212: error: undefined reference to 'mlir::omp::IntegerWrapAroundAttr::get(mlir::MLIRContext*, bool)'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
```

https://github.com/llvm/llvm-project/pull/214165