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Add x86 encoding for isub

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This commit is contained in:
Andrew Brown
2019-09-17 13:38:52 -07:00
parent 4e3cb25983
commit ca1df499a0
4 changed files with 59 additions and 4 deletions
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6
cranelift/codegen/meta/src/isa/x86/encodings.rs
View File

@@ -1940,6 +1940,12 @@ pub(crate) fn define(
e.enc_32_64(iadd, rec_fa.opcodes(*opcodes));
}
// SIMD integer subtraction
for (ty, opcodes) in &[(I8, &PSUBB), (I16, &PSUBW), (I32, &PSUBD), (I64, &PSUBQ)] {
let isub = isub.bind_vector_from_lane(ty.clone(), sse_vector_size);
e.enc_32_64(isub, rec_fa.opcodes(*opcodes));
}
// SIMD icmp using PCMPEQ*
let mut pcmpeq_mapping: HashMap<u64, (&[u8], Option<SettingPredicateNumber>)> = HashMap::new();
pcmpeq_mapping.insert(8, (&PCMPEQB, None));

12
cranelift/codegen/meta/src/isa/x86/opcodes.rs
View File

@@ -294,6 +294,18 @@ pub static PSHUFB: [u8; 4] = [0x66, 0x0f, 0x38, 0x00];
/// store the result in xmm1 (SSE2).
pub static PSHUFD: [u8; 3] = [0x66, 0x0f, 0x70];
/// Subtract packed byte integers in xmm2/m128 from packed byte integers in xmm1 (SSE2).
pub static PSUBB: [u8; 3] = [0x66, 0x0f, 0xf8];
/// Subtract packed word integers in xmm2/m128 from packed word integers in xmm1 (SSE2).
pub static PSUBW: [u8; 3] = [0x66, 0x0f, 0xf9];
/// Subtract packed doubleword integers in xmm2/m128 from doubleword byte integers in xmm1 (SSE2).
pub static PSUBD: [u8; 3] = [0x66, 0x0f, 0xfa];
/// Subtract packed quadword integers in xmm2/m128 from xmm1 (SSE2).
pub static PSUBQ: [u8; 3] = [0x66, 0x0f, 0xfb];
/// Push r{16,32,64}.
pub static PUSH_REG: [u8; 1] = [0x50];