[all-commits] [llvm/llvm-project] 65a844: Revert "[MC] Remove isThumbFunc special case"

[Fangrui Song via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 65a8448fbf4a8ca3c214f8e514ba86a953d42fb7
      https://github.com/llvm/llvm-project/commit/65a8448fbf4a8ca3c214f8e514ba86a953d42fb7
  Author: Fangrui Song <i at maskray.me>
  Date:   2023-08-13 (Sun, 13 Aug 2023)

  Changed paths:
    M llvm/lib/MC/MCExpr.cpp

  Log Message:
  -----------
  Revert "[MC] Remove isThumbFunc special case"

This reverts commit 8ee6c0ea0bf30f1f1da6b49ee720b933f9676a30.

The untested special case is used as a workaround that we don't force emitting
R_ARM_REL32 relocations like GNU assembler's arm port: `TC_FORCE_RELOCATION_SUB_SAME`.
We shall investigate how to emit R_ARM_REL32.