Re: [PATCH] RISC-V: c implies zca, and conditionally zcf & zcd

[Jeff Law]

On 7/10/24 4:12 AM, Fei Gao wrote:

According to Zc-1.0.4-3.pdf from
https://github.com/riscvarchive/riscv-code-size-reduction/releases/tag/v1.0.4-3
The rule is that:
- C always implies Zca
- C+F implies Zcf (RV32 only)
- C+D implies Zcd

Signed-off-by: Fei Gao <gao...@eswincomputing.com>
gcc/ChangeLog:

        * common/config/riscv/riscv-common.cc:
        c implies zca, and conditionally zcf & zcd.

gcc/testsuite/ChangeLog:

        * gcc.target/riscv/attribute-15.c: adapt TC.
        * gcc.target/riscv/attribute-16.c: likewise.
        * gcc.target/riscv/attribute-17.c: likewise.
        * gcc.target/riscv/attribute-18.c: likewise.
        * gcc.target/riscv/pr110696.c: likewise.
        * gcc.target/riscv/rvv/base/abi-callee-saved-1-zcmp.c: likewise.
        * gcc.target/riscv/rvv/base/abi-callee-saved-2-zcmp.c: likewise.
        * gcc.target/riscv/rvv/base/pr114352-1.c: likewise.
        * gcc.target/riscv/rvv/base/pr114352-3.c: likewise.
        * gcc.target/riscv/arch-39.c: New test.
        * gcc.target/riscv/arch-40.c: New test.

OK.

jeff