[PATCH] D151848: [X86, Peephole] Enable FoldImmediate for X86

[Martin Storsjö via Phabricator via llvm-commits]

mstorsjo added a comment.

This change triggers failed asserts for me:

  $ cat repro.c
  short a, b;
  void c() {
    __asm__("" : : "q"(256 * sizeof a));
    __asm__("" : : "q"(256 * sizeof b));
  }
  $ clang -target i686-w64-mingw32 -c repro.c -O2
  clang: ../include/llvm/CodeGen/MachineOperand.h:375: unsigned int llvm::MachineOperand::getSubReg() const: Assertion `isReg() && "Wrong MachineOperand accessor"' failed. 

Can you look into it, or revert if fixing it takes a while?


Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D151848/new/

https://reviews.llvm.org/D151848