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This patch adds support for extending from partial SVE modes to both full vector modes and wider partial modes. Some tests now need --param aarch64-sve-compare-costs=0 to force the original full-vector code. 2019-11-16 Richard Sandiford <richard.sandiford@arm.com> gcc/ * config/aarch64/iterators.md (SVE_HSDI): New mode iterator. (narrower_mask): Handle VNx4HI, VNx2HI and VNx2SI. * config/aarch64/aarch64-sve.md (<ANY_EXTEND:optab><SVE_PARTIAL_I:mode><SVE_HSDI:mode>2): New pattern. (*<ANY_EXTEND:optab><SVE_PARTIAL_I:mode><SVE_HSDI:mode>2): Likewise. (@aarch64_pred_sxt<SVE_FULL_HSDI:mode><SVE_PARTIAL_I:mode>): Update comment. Avoid new narrower_mask ambiguity. (@aarch64_cond_sxt<SVE_FULL_HSDI:mode><SVE_PARTIAL_I:mode>): Likewise. (*cond_uxt<mode>_2): Update comment. (*cond_uxt<mode>_any): Likewise. gcc/testsuite/ * gcc.target/aarch64/sve/cost_model_1.c: Expect the loop to be vectorized with bytes stored in 32-bit containers. * gcc.target/aarch64/sve/extend_1.c: New test. * gcc.target/aarch64/sve/extend_2.c: New test. * gcc.target/aarch64/sve/extend_3.c: New test. * gcc.target/aarch64/sve/extend_4.c: New test. * gcc.target/aarch64/sve/load_const_offset_3.c: Add --param aarch64-sve-compare-costs=0. * gcc.target/aarch64/sve/mask_struct_store_1.c: Likewise. * gcc.target/aarch64/sve/mask_struct_store_1_run.c: Likewise. * gcc.target/aarch64/sve/mask_struct_store_2.c: Likewise. * gcc.target/aarch64/sve/mask_struct_store_2_run.c: Likewise. * gcc.target/aarch64/sve/unpack_unsigned_1.c: Likewise. * gcc.target/aarch64/sve/unpack_unsigned_1_run.c: Likewise. From-SVN: r278342
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