On 11/19/25 6:58 PM, [email protected] wrote:
From: Pan Li <[email protected]>
When the input of the scalar unsigned SAT_TRUNC is not Xmode,
the rtx need to zero extend to Xmode before the underlying
code gen. Most of other SAT_* code gen has leveraged
the API riscv_extend_to_xmode_reg but still have the ustrunc
missed. Then results in the failures mentioned in PR.
The below test suites are passed for this patch series.
* The rv64gcv fully regression test.
PR target/122692
gcc/ChangeLog:
* config/riscv/riscv.cc (riscv_expand_ustrunc): Leverage
riscv_extend_to_xmode_reg to take care of src rtx.
gcc/testsuite/ChangeLog:
* g++.target/riscv/pr122692-run-1.C: New test.
* g++.target/riscv/pr122692-run-2.C: New test.
Thanks. Given it's a correctness thing, I'll push it shortly. I'll
also check if it's an issue in gcc-15 for a potential backport.
Thanks again for jumping on it quickly Pan!
jeff
