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6039ddea09
This instruction is only available when the jsconv target_feature is available, so on ARMv8.3 or higher. It is used e.g. by Ruffle[0] to speed up its conversion from f64 to i32, or by any JS engine probably. I’ve picked the stdarch_aarch64_jscvt feature because it’s the name of the FEAT_JSCVT, but hesitated with naming it stdarch_aarch64_jsconv (the name of the target_feature) or stdarch_aarch64_jcvt (the name of the C intrinsic) or stdarch_aarch64_fjcvtzs (the name of the instruction), this choice is purely arbitrary and I guess it could be argued one way or another. I wouldn’t expect it to stay unstable for too long, so ultimately this shouldn’t matter much. This feature is now tracked in this issue[1]. [0] https://github.com/ruffle-rs/ruffle/pull/21780 [1] https://github.com/rust-lang/rust/issues/147555
Generate and run programs using equivalent C and Rust intrinsics, checking that each produces the same result from random inputs.
Usage
USAGE:
intrinsic-test [FLAGS] [OPTIONS] <INPUT>
FLAGS:
--a32 Run tests for A32 intrinsics instead of A64
--generate-only Regenerate test programs, but don't build or run them
-h, --help Prints help information
-V, --version Prints version information
OPTIONS:
--cppcompiler <CPPCOMPILER> The C++ compiler to use for compiling the c++ code [default: clang++]
--runner <RUNNER> Run the C programs under emulation with this command
--skip <SKIP> Filename for a list of intrinsics to skip (one per line)
--toolchain <TOOLCHAIN> The rust toolchain to use for building the rust code
ARGS:
<INPUT> The input file containing the intrinsics