Currently both sections will be placed in the same PT_LOAD and therefore
lld generates a contiguous output file containing both sections.
By using AT(0xffff0000) the .vectors is placed a separate PT_LOAD and the
resulting file is now only a few kilobytes.
Reviewed By: psmith
Differential Revision: https://reviews.llvm.org/D85661
The test fails in 32-bit Windows builds for unclear reasons:
ld.lld: error: failed to open
C:\src\llvm_package_1100-rc1\build32_stage0\tools\lld\test\ELF\Output\arm-exidx-range.s.tmp:
The parameter is incorrect.
A linker will create .ARM.exidx sections for InputSections that don't
have them. This can cause a relocation out of range error If the
InputSection happens to be extremely far away from the other sections.
This is often the case for the vector table on older ARM CPUs as the only
two places that the table can be placed is 0 or 0xffff0000. We fix this
by removing InputSections that need a linker generated .ARM.exidx
section if that would cause an error.
Differential Revision: https://reviews.llvm.org/D79289
Alex Richardson