[all-commits] [llvm/llvm-project] a7b154: [MC][ARM] Reuse symbol value in constant pool

[luxufan via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: a7b154aa1770a2223be2e99735fab54c1c081007
      https://github.com/llvm/llvm-project/commit/a7b154aa1770a2223be2e99735fab54c1c081007
  Author: luxufan <luxufan at iscas.ac.cn>
  Date:   2022-06-07 (Tue, 07 Jun 2022)

  Changed paths:
    M llvm/include/llvm/MC/ConstantPools.h
    M llvm/lib/MC/ConstantPools.cpp
    M llvm/test/MC/ARM/ldr-pseudo-wide.s

  Log Message:
  -----------
  [MC][ARM] Reuse symbol value in constant pool

Fix https://github.com/llvm/llvm-project/issues/55816

Before this patch, MCConstantExpr were reused, but MCSymbolExpr were
not. To reuse symbol value, this patch added a DenseMap to record the
symbol value.

Differential Revision: https://reviews.llvm.org/D127113