[llvm] a2d3b12 - Revert "[IR] Remove arg_operands and getNumArgOperands (NFC)"

[Philip Reames via llvm-commits]

Reminder, when reverting a change, please explain why.  Links to e.g. 
failing build bots are good.

Philip

On 10/8/21 11:02 AM, Kazu Hirata via llvm-commits wrote:
> Author: Kazu Hirata
> Date: 2021-10-08T11:01:56-07:00
> New Revision: a2d3b12786bad19cdb7353db69db4e9c8772bd46
>
> URL: https://github.com/llvm/llvm-project/commit/a2d3b12786bad19cdb7353db69db4e9c8772bd46
> DIFF: https://github.com/llvm/llvm-project/commit/a2d3b12786bad19cdb7353db69db4e9c8772bd46.diff
>
> LOG: Revert "[IR] Remove arg_operands and getNumArgOperands (NFC)"
>
> This reverts commit b2ee408dde374d6a27a34746fd7c7b5bab97ea89.
>
> Added:
>      
>
> Modified:
>      llvm/include/llvm/IR/InstrTypes.h
>
> Removed:
>      
>
>
> ################################################################################
> diff  --git a/llvm/include/llvm/IR/InstrTypes.h b/llvm/include/llvm/IR/InstrTypes.h
> index a2180a8d4b2a3..4546e80fc87ad 100644
> --- a/llvm/include/llvm/IR/InstrTypes.h
> +++ b/llvm/include/llvm/IR/InstrTypes.h
> @@ -1325,6 +1325,16 @@ class CallBase : public Instruction {
>     bool arg_empty() const { return arg_end() == arg_begin(); }
>     unsigned arg_size() const { return arg_end() - arg_begin(); }
>   
> +  // Legacy API names that duplicate the above and will be removed once users
> +  // are migrated.
> +  iterator_range<User::op_iterator> arg_operands() {
> +    return make_range(arg_begin(), arg_end());
> +  }
> +  iterator_range<User::const_op_iterator> arg_operands() const {
> +    return make_range(arg_begin(), arg_end());
> +  }
> +  unsigned getNumArgOperands() const { return arg_size(); }
> +
>     Value *getArgOperand(unsigned i) const {
>       assert(i < arg_size() && "Out of bounds!");
>       return getOperand(i);
>
>
>          
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