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authorxuli <xuli1@eswincomputing.com>2023-11-17 04:48:47 +0000
committerxuli <xuli1@eswincomputing.com>2023-11-20 02:50:09 +0000
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tree495951a746636087f774fc5126ee26160946e27a /libcpp
parent8bccee51f0deac64b79cd9ad75df599422f4c8ff (diff)
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RISC-V: Implement -mmemcpy-strategy= options[PR112537]
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112537 -mmemcpy-strategy=[auto|libcall|scalar|vector] auto: Current status, use scalar or vector instructions. libcall: Always use a library call. scalar: Only use scalar instructions. vector: Only use vector instructions. PR target/112537 gcc/ChangeLog: * config/riscv/riscv-opts.h (enum riscv_stringop_strategy_enum): Strategy enum. * config/riscv/riscv-string.cc (riscv_expand_block_move): Disabled based on options. (expand_block_move): Ditto. * config/riscv/riscv.opt: Add -mmemcpy-strategy=. gcc/testsuite/ChangeLog: * gcc.target/riscv/rvv/base/cpymem-strategy-1.c: New test. * gcc.target/riscv/rvv/base/cpymem-strategy-2.c: New test. * gcc.target/riscv/rvv/base/cpymem-strategy-3.c: New test. * gcc.target/riscv/rvv/base/cpymem-strategy-4.c: New test. * gcc.target/riscv/rvv/base/cpymem-strategy-5.c: New test. * gcc.target/riscv/rvv/base/cpymem-strategy.h: New test.
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