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Codegen: Allow encoding of (r32|r64).(load|store)

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Accessing Wasm reference globals that are reference types will
want to use the plain load/store instructions. This commit adds
encodings for these instructions to match loading a i32/i64.
Producers of IR are required to insert the appropriate barriers
around the loads/stores.
This commit is contained in:
Ryan Hunt
2020-01-06 15:49:06 -06:00
parent 848baa0aa7
commit bbc0a328c7
4 changed files with 29 additions and 0 deletions
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4
cranelift/codegen/meta/src/isa/x86/mod.rs
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@@ -1,9 +1,11 @@
use crate::cdsl::cpu_modes::CpuMode;
use crate::cdsl::isa::TargetIsa;
use crate::cdsl::types::ReferenceType;
use crate::shared::types::Bool::B1;
use crate::shared::types::Float::{F32, F64};
use crate::shared::types::Int::{I16, I32, I64, I8};
use crate::shared::types::Reference::{R32, R64};
use crate::shared::Definitions as SharedDefinitions;
mod encodings;
@@ -41,6 +43,7 @@ pub(crate) fn define(shared_defs: &mut SharedDefinitions) -> TargetIsa {
x86_32.legalize_type(I8, widen);
x86_32.legalize_type(I16, widen);
x86_32.legalize_type(I32, x86_expand);
x86_32.legalize_value_type(ReferenceType(R32), x86_expand);
x86_32.legalize_type(F32, x86_expand);
x86_32.legalize_type(F64, x86_expand);
@@ -51,6 +54,7 @@ pub(crate) fn define(shared_defs: &mut SharedDefinitions) -> TargetIsa {
x86_64.legalize_type(I16, widen);
x86_64.legalize_type(I32, x86_expand);
x86_64.legalize_type(I64, x86_expand);
x86_64.legalize_value_type(ReferenceType(R64), x86_expand);
x86_64.legalize_type(F32, x86_expand);
x86_64.legalize_type(F64, x86_expand);