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Initial reftype support in aarch64, modulo safepoints.

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This commit adds the inital support to allow reftypes to flow through
the program when targetting aarch64. It also adds a fix to the
`ModuleTranslationState` needed to send R32/R64 types over from the
SpiderMonkey embedding.

This commit does not include any support for safepoints in aarch64
or the `MachInst` infrastructure; that is in the next commit.

This commit also makes a drive-by improvement to `Bint`, avoiding an
unneeded zero-extension op when the extended value comes directly from a
conditional-set (which produces a full-width 0 or 1).
This commit is contained in:
Chris Fallin
2020-06-09 16:32:46 -07:00
parent 4edd165d25
commit b93e8c296d
6 changed files with 114 additions and 11 deletions
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6
cranelift/codegen/src/isa/aarch64/lower.rs
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@@ -829,8 +829,8 @@ pub fn ty_bits(ty: Type) -> usize {
B1 => 1,
B8 | I8 => 8,
B16 | I16 => 16,
B32 | I32 | F32 => 32,
B64 | I64 | F64 => 64,
B32 | I32 | F32 | R32 => 32,
B64 | I64 | F64 | R64 => 64,
B128 | I128 => 128,
IFLAGS | FFLAGS => 32,
B8X8 | I8X8 | B16X4 | I16X4 | B32X2 | I32X2 => 64,
@@ -842,7 +842,7 @@ pub fn ty_bits(ty: Type) -> usize {
pub(crate) fn ty_is_int(ty: Type) -> bool {
match ty {
B1 | B8 | I8 | B16 | I16 | B32 | I32 | B64 | I64 => true,
B1 | B8 | I8 | B16 | I16 | B32 | I32 | B64 | I64 | R32 | R64 => true,
F32 | F64 | B128 | I128 | I8X8 | I8X16 | I16X4 | I16X8 | I32X2 | I32X4 | I64X2 => false,
IFLAGS | FFLAGS => panic!("Unexpected flags type"),
_ => panic!("ty_is_int() on unknown type: {:?}", ty),