MIPSr6: try to use bal call functions which need t9 to get GOT

[wzssyqa]

One example is
compiler-rt/lib/sanitizer_common/sanitizer_allocator_dlsym.h

  static void *Allocate(uptr size_in_bytes) {
    void *ptr = InternalAlloc(size_in_bytes, nullptr, kWordSize);
    CHECK(internal_allocator()->FromPrimary(ptr));
    Details::OnAllocate(ptr,
                        internal_allocator()->GetActuallyAllocatedSize(ptr));
    return ptr;
  }

Allocate call InternalAlloc by bal instead of jar $t9, while needs t9 to compute its GOT.

Let's use pcrel instructions to compute GOT instead of t9 for MIPSr6.

[wzssyqa]

how to assign this problem to myself?

[llvmbot]

@llvm/issue-subscribers-backend-mips

[brad0]

Ping.

[brad0]

@wzssyqa

[wzssyqa]

Brad Smith ***@***.***> 于2024年1月27日周六 12:29写道：

@wzssyqa

Dependency of $t9 is quite ugly in current, I guess that we should use pcrel now. I guess, there will be more and more the problems like this in future. I am working on the GCC support now: https://github.com/wzssyqa/gcc/tree/pcrel Can you help to review this patch?

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-- YunQiang Su