Commit Graph

2 Commits

Author SHA1 Message Date
Reshabh Sharma ae983de6cc [InferAddressSpaces] NFC: For noop IntToPtr/PtrToInt pair cast to operator instead of PtrToInt
Compiler crashes at an assertion while casting operands to PtrToIntInst at some cases when
ptrtoint is present as an explicit operand to inttoptr. Explicit instruction operator as
operand can not be casted to an Instruction.

This patch replaces cast from PtrToInst to Operator which are later checked for constant
expressions.

Differential Revision: https://reviews.llvm.org/D105002
2021-06-28 19:24:26 +05:30
Michael Liao dccfaacf93 [InferAddressSpaces] Handle the pair of `ptrtoint`/`inttoptr`.
Summary:
- `ptrtoint` and `inttoptr` are defined as no-op casts if the integer
  value as the same size as the pointer value. The pair of
  `ptrtoint`/`inttoptr` is in fact a no-op cast sequence between
  different address spaces. Teach `infer-address-spaces` to handle them
  like a `bitcast`.

Reviewers: arsenm, chandlerc

Subscribers: jvesely, wdng, nhaehnle, hiraditya, kerbowa, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D81938
2020-06-25 20:46:56 -04:00