[Bug c++/90367] Spurious warning array subscript is above array bounds

[alexandre.ganea at ubisoft dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90367

--- Comment #6 from Alexandre Ganea <alexandre.ganea at ubisoft dot com> ---
...and the command-line:

/usr/bin/c++  -DGTEST_HAS_RTTI=0 -D_GNU_SOURCE -D__STDC_CONSTANT_MACROS
-D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Ilib/Target/AMDGPU
-I/mnt/f/svn/llvm/lib/Target/AMDGPU -Iinclude -I/mnt/f/svn/llvm/include -fPIC
-fvisibility-inlines-hidden -Werror=date-time -std=c++11 -Wall -Wextra
-Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -Wno-long-long
-Wimplicit-fallthrough -Wno-maybe-uninitialized -Wno-noexcept-type
-Wdelete-non-virtual-dtor -Wno-comment -Wno-unused-parameter -Wno-type-limits
-Wno-cast-qual -Wno-deprecated-declarations -Wno-empty-body -Wno-overflow
-Wno-unused-variable -Wno-switch -fdiagnostics-color -ffunction-sections
-fdata-sections -O3 -DNDEBUG    -fno-exceptions -fno-rtti -c
/mnt/f/svn/llvm/lib/Target/AMDGPU/R600ISelLowering_3.cpp