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Like the avg3_floor pattern, the avg3_ceil has the similar issue that lack of the RVV DImode support. Thus, this patch would like to support the DImode by the standard name, with the iterator V_VLSI_D. The below test suites are passed for this patch series. * The rv64gcv fully regression test. gcc/ChangeLog: * config/riscv/autovec.md (avg<mode>3_ceil): Add new pattern of avg3_ceil for RVV DImode gcc/testsuite/ChangeLog: * gcc.target/riscv/rvv/autovec/avg_data.h: Adjust the test data. * gcc.target/riscv/rvv/autovec/avg_ceil-1-i64-from-i128.c: New test. * gcc.target/riscv/rvv/autovec/avg_ceil-run-1-i64-from-i128.c: New test. Signed-off-by: Pan Li <pan2.li@intel.com>
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