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2015-11-06 Benedikt Huber <benedikt.huber@theobroma-systems.com> Philipp Tomsich <philipp.tomsich@theobroma-systems.com> * config/aarch64/aarch64-builtins.c: Builtins for rsqrt and rsqrtf. * config/aarch64/aarch64-protos.h: Declare. * config/aarch64/aarch64-simd.md: Matching expressions for frsqrte and frsqrts. * config/aarch64/aarch64-tuning-flags.def: Added recip_sqrt. * config/aarch64/aarch64.c: New functions. Emit rsqrt estimation code when applicable. * config/aarch64/aarch64.md: Added enum entries. * config/aarch64/aarch64.opt: Added option -mlow-precision-recip-sqrt. * testsuite/gcc.target/aarch64/rsqrt_asm_check_common.h: Common macros for assembly checks. * testsuite/gcc.target/aarch64/rsqrt_asm_check_negative_1.c: Make sure frsqrts and frsqrte are not emitted. * testsuite/gcc.target/aarch64/rsqrt_asm_check_1.c: Make sure frsqrts and frsqrte are emitted. * testsuite/gcc.target/aarch64/rsqrt_1.c: Functional tests for rsqrt. Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> Co-Authored-By: Philipp Tomsich <philipp.tomsich@theobroma-systems.com> From-SVN: r229866
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