[PATCH] D78081: [InstCombine][SVE] Fix visitGetElementPtrInst for scalable type.

Mon Apr 13 22:24:23 PDT 2020

huihuiz added a comment.

Current upstream crash at llvm/lib/IR/Constants.cpp:1674: static llvm::Constant *llvm::ConstantExpr::getCast(unsigned int, llvm::Constant *, llvm::Type *, bool): Assertion `CastInst::castIsValid(opc, C, Ty) && "Invalid constantexpr cast!"' failed.

take test.ll, run opt -S -instcombine test.ll

  define <vscale x 2 x i8*> @gep_index_type_is_scalable(i8* %p) {
    %gep = getelementptr i8, i8* %p, <vscale x 2 x i64> undef
    ret <vscale x 2 x i8*> %gep
  }

Repository:
  rG LLVM Github Monorepo

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  https://reviews.llvm.org/D78081/new/

https://reviews.llvm.org/D78081