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cranelift: Implement scalar FMA on x86 (#4460)

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x86 does not have dedicated instructions for scalar FMA, lower
to a libcall which seems to be what llvm does.
This commit is contained in:
Afonso Bordado
2022-08-03 18:29:10 +01:00
committed by GitHub
parent ff6082c0af
commit 709716bb8e
13 changed files with 167 additions and 50 deletions
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5
cranelift/fuzzgen/src/function_generator.rs
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@@ -169,9 +169,8 @@ const OPCODE_SIGNATURES: &'static [(
(Opcode::Fcopysign, &[F32, F32], &[F32], insert_opcode),
(Opcode::Fcopysign, &[F64, F64], &[F64], insert_opcode),
// Fma
// TODO: Missing on X86, see https://github.com/bytecodealliance/wasmtime/pull/4460
// (Opcode::Fma, &[F32, F32, F32], &[F32], insert_opcode),
// (Opcode::Fma, &[F64, F64, F64], &[F64], insert_opcode),
(Opcode::Fma, &[F32, F32, F32], &[F32], insert_opcode),
(Opcode::Fma, &[F64, F64, F64], &[F64], insert_opcode),
// Fabs
(Opcode::Fabs, &[F32], &[F32], insert_opcode),
(Opcode::Fabs, &[F64], &[F64], insert_opcode),