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Commiteb2ea476dbemit-rtl: Allow extra checks for paradoxical subregs [PR119966] changed validate_subreg to return false on the paradoxical SImode subreg of the OpenRISC condition flag register (reg:BI sr_f), which triggered internal compiler error: in emit_move_multi_word, at expr.cc:4497c0694f95f5or1k: Fix ICE in libgcc caused by recent validate_subreg changes changed or1k_can_change_mode_class to allow changing flags mode from BI to SI. But or1k_hard_regno_mode_ok still returns false for condition flag register in SImode. Update or1k_hard_regno_mode_ok to also allow condition flag register in SImode. Tested with or1k Linux cross compiler for or1k glibc build. gcc/ PR target/120587 PR target/125155 * config/or1k/or1k.cc (or1k_hard_regno_mode_ok): Allow condition condition flag register in SImode. gcc/testsuite/ PR target/120587 PR target/125155 * gcc.target/or1k/pr125155.c: New test. Signed-off-by: H.J. Lu <hjl.tools@gmail.com>
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