[Bug-Candidate]: Call IR operation missing when its result is indexed

[kevinclancy]

Describe the issue:

When I index the result of an external call, the generated IR does not create a call operation. The TMP that was supposed to be the lvalue for the high level call is indexed without having been initialized.

This only happens if the call takes at least one argument.

Seems similar to this issue.

Code example to reproduce the issue:

pragma solidity ^0.8.19;

interface ISomeInterface {
    function value(uint z) external returns (uint[] memory);
}

contract Test {

    function test(ISomeInterface a) external {
        uint x = a.value(3)[0];
    }
}

Version:

0.9.3

Relevant log output:

INFO:Printers:Contract ISomeInterface
        Function ISomeInterface.value(uint256) (*)
Contract Test
        Function Test.test(ISomeInterface) (*)
                Expression: x = a.value(3)[0]
                IRs:
                        REF_1(None) -> TMP_0[0]
                        x(uint256) := REF_1(None)

[kevinclancy]

Duplicate of #1923