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path: root/sysdeps/x86_64/multiarch/strspn-sse4.c
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* Update copyright dates with scripts/update-copyrightsPaul Eggert2024-01-011-1/+1
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* Update copyright dates with scripts/update-copyrightsJoseph Myers2023-01-061-1/+1
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* x86: Add support for building str{c|p}{brk|spn} with explicit ISA levelNoah Goldstein2022-07-051-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The changes for these functions are different than the others because the best implementation (sse4_2) requires the generic implementation as a fallback to be built as well. Changes are: 1. Add non-multiarch functions for str{c|p}{brk|spn}.c to statically select the best implementation based on the configured ISA build level. 2. Add stubs for str{c|p}{brk|spn}-generic and varshift.c to in the sysdeps/x86_64 directory so that the the sse4 implementation will have all of its dependencies for the non-multiarch / rtld build when ISA level >= 2. 3. Add new multiarch/rtld-strcspn.c that just include the non-multiarch strcspn.c which will in turn select the best implementation based on the compiled ISA level. 4. Refactor the ifunc selector and ifunc implementation list to use the ISA level aware wrapper macros that allow functions below the compiled ISA level (with a guranteed replacement) to be skipped. Tested with and without multiarch on x86_64 for ISA levels: {generic, x86-64-v2, x86-64-v3, x86-64-v4} And m32 with and without multiarch.
* x86: Rename generic functions with unique postfix for clarityNoah Goldstein2022-06-161-0/+136
No functions are changed. It just renames generic implementations from '{func}_sse2' to '{func}_generic'. This is just because the postfix "_sse2" was overloaded and was used for files that had hand-optimized sse2 assembly implementations and files that just redirected back to the generic implementation. Full xcheck passed on x86_64.