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Add x86 legalization for imul.i64x2 for non-AVX CPUs

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The `convert_i64x2_imul` custom legalization checks the ISA flags for AVX512DQ or AVX512VL support and legalizes `imul.i64x2` to an `x86_pmullq` in this case; if not, it uses a lengthy SSE2-compatible instruction sequence.
This commit is contained in:
Andrew Brown
2020-05-26 09:47:03 -07:00
parent b3a6985cd5
commit 1ea09088be
6 changed files with 96 additions and 13 deletions
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5
cranelift/codegen/meta/src/isa/x86/mod.rs
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@@ -1,6 +1,6 @@
use crate::cdsl::cpu_modes::CpuMode;
use crate::cdsl::isa::TargetIsa;
use crate::cdsl::types::ReferenceType;
use crate::cdsl::types::{ReferenceType, VectorType};
use crate::shared::types::Bool::B1;
use crate::shared::types::Float::{F32, F64};
@@ -35,6 +35,7 @@ pub(crate) fn define(shared_defs: &mut SharedDefinitions) -> TargetIsa {
let expand_flags = shared_defs.transform_groups.by_name("expand_flags");
let x86_widen = shared_defs.transform_groups.by_name("x86_widen");
let x86_narrow = shared_defs.transform_groups.by_name("x86_narrow");
let x86_narrow_avx = shared_defs.transform_groups.by_name("x86_narrow_avx");
let x86_expand = shared_defs.transform_groups.by_name("x86_expand");
x86_32.legalize_monomorphic(expand_flags);
@@ -46,6 +47,7 @@ pub(crate) fn define(shared_defs: &mut SharedDefinitions) -> TargetIsa {
x86_32.legalize_value_type(ReferenceType(R32), x86_expand);
x86_32.legalize_type(F32, x86_expand);
x86_32.legalize_type(F64, x86_expand);
x86_32.legalize_value_type(VectorType::new(I64.into(), 2), x86_narrow_avx);
x86_64.legalize_monomorphic(expand_flags);
x86_64.legalize_default(x86_narrow);
@@ -57,6 +59,7 @@ pub(crate) fn define(shared_defs: &mut SharedDefinitions) -> TargetIsa {
x86_64.legalize_value_type(ReferenceType(R64), x86_expand);
x86_64.legalize_type(F32, x86_expand);
x86_64.legalize_type(F64, x86_expand);
x86_64.legalize_value_type(VectorType::new(I64.into(), 2), x86_narrow_avx);
let recipes = recipes::define(shared_defs, &settings, &regs);