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Add x86_pmuludq

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This instruction multiplies the lower 32 bits of two 64x2 unsigned integers into an i64x2; this is necessary for lowering Wasm's i64x2.mul.
This commit is contained in:
Andrew Brown
2020-05-21 12:21:49 -07:00
parent 40f31375a5
commit df171f01b5
5 changed files with 45 additions and 5 deletions
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4
cranelift/codegen/meta/src/isa/x86/encodings.rs
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@@ -1646,6 +1646,7 @@ fn define_simd(
let x86_pmins = x86.by_name("x86_pmins");
let x86_pminu = x86.by_name("x86_pminu");
let x86_pmullq = x86.by_name("x86_pmullq");
let x86_pmuludq = x86.by_name("x86_pmuludq");
let x86_pshufb = x86.by_name("x86_pshufb");
let x86_pshufd = x86.by_name("x86_pshufd");
let x86_psll = x86.by_name("x86_psll");
@@ -2100,6 +2101,9 @@ fn define_simd(
e.enc_both_inferred_maybe_isap(imul, rec_fa.opcodes(opcodes), *isap);
}
// SIMD multiplication with lane expansion.
e.enc_both_inferred(x86_pmuludq, rec_fa.opcodes(&PMULUDQ));
// SIMD integer multiplication for I64x2 using a AVX512.
{
e.enc_32_64_maybe_isap(