9ed52438b8
In nvptx_reorg_uniform_simt we have a loop: ... for (insn = get_insns (); insn; insn = next) { next = NEXT_INSN (insn); if (!(CALL_P (insn) && nvptx_call_insn_is_syscall_p (insn)) && !(NONJUMP_INSN_P (insn) && GET_CODE (PATTERN (insn)) == PARALLEL && get_attr_atomic (insn))) continue; ... that intends to handle syscalls and atomic insns. However, this also silently skips the atomic insn nvptx_atomic_store, which has GET_CODE (PATTERN (insn)) == SET. This does not cause problems, because the nvptx_atomic_store actually maps onto a "st" insn, and therefore is not atomic and doesn't need to be handled by nvptx_reorg_uniform_simt. Fix this by: - explicitly setting nvptx_atomic_store's atomic attribute to false, - rewriting the skip condition to make sure all insn with atomic attribute are handled, and - asserting that all handled insns are PARALLEL. Tested on nvptx. gcc/ChangeLog: 2022-02-19 Tom de Vries <tdevries@suse.de> * config/nvptx/nvptx.cc (nvptx_reorg_uniform_simt): Handle all insns with atomic attribute. Assert that all handled insns are PARALLELs. * config/nvptx/nvptx.md (define_insn "nvptx_atomic_store<mode>"): Set atomic attribute to false. gcc/testsuite/ChangeLog: 2022-02-19 Tom de Vries <tdevries@suse.de> * gcc.target/nvptx/uniform-simt-3.c: New test. |
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