Fixed TEST_JALR_OP macro that used the LA macro in ways incompatible with GCC later than 2023-12-20

[davidharrishmc]

Description

• Updated TEST_JALR_OP in test_macros.h
• The macro no longer works when rd = x0 in versions of GCC newer than 2023.12.20
• riscof throws a message /home/jstine/cvw/addins/riscv-arch-test/riscv-test-suite/rv32i_m/I/src/jalr-01.S:72: Error: illegal operands `la x0,5b'
• The TEST_JALR_OP macro invokes LA, which does not like x0 as an operand in the latest GCC
• replacing LA(rd, 5b) with auipc rd, 0 in test_macros.h solves the compiler issue and produces similar code but without a bunch of preceeding nops

Related Issues

NA

Ratified/Unratified Extensions

• [ I ] Ratified
• Unratified

List Extensions

I

Reference Model Used

• [x ] SAIL
• [x ] Spike
• Other - < SPECIFY HERE >

Mandatory Checklist:

• [n/a ] All tests are compliant with the test-format spec present in this repo ?
• [ y ] Ran the new tests on RISCOF with SAIL/Spike as reference model successfully ?
• [ n ] Ran the new tests on RISCOF in coverage mode
• [ n ] Link to Google-Drive folder containing the new coverage reports (See this for more info): < SPECIFY HERE >
• [ n ] Link to PR in RISCV-ISAC from which the reports were generated : < SPECIFY HERE >
• [ y ] Changelog entry created with a minor patch

Optional Checklist:

• [n ] RISCV-V CTG PR link if tests were generated using it : < SPECIFY HERE >
• [n ] Were the tests hand-written/modified ?
• [y ] Have you run these on any hard DUT model ? Please specify name and provide link if possible in the description
  https://github.com/openhwgroup/cvw/pull/677/files
• [ n ] If you have modified arch_test.h Please provide a detailed description of the changes in the Description section above.

[allenjbaum]

This should fix this issue (though it really is a tool issue...)

[allenjbaum]

Simple fix for a tool issue