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Add saturating addition with a SIMD encoding

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This includes the new instructions `sadd_sat` and `uadd_sat` and only encodes the i8x16 and i16x8 types; these are what is needed for implementing the SIMD spec (see https://github.com/WebAssembly/simd/blob/master/proposals/simd/SIMD.md#saturating-integer-addition).
This commit is contained in:
Andrew Brown
2019-09-18 15:56:15 -07:00
parent 630cb3ee62
commit 21144068d4
5 changed files with 98 additions and 4 deletions
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12
cranelift/codegen/meta/src/isa/x86/opcodes.rs
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@@ -251,6 +251,18 @@ pub static PADDQ: [u8; 3] = [0x66, 0x0f, 0xd4];
/// Add packed word integers from xmm2/m128 and xmm1 (SSE2).
pub static PADDW: [u8; 3] = [0x66, 0x0f, 0xfd];
/// Add packed signed byte integers from xmm2/m128 and xmm1 saturate the results (SSE).
pub static PADDSB: [u8; 3] = [0x66, 0x0f, 0xec];
/// Add packed signed word integers from xmm2/m128 and xmm1 saturate the results (SSE).
pub static PADDSW: [u8; 3] = [0x66, 0x0f, 0xed];
/// Add packed unsigned byte integers from xmm2/m128 and xmm1 saturate the results (SSE).
pub static PADDUSB: [u8; 3] = [0x66, 0x0f, 0xdc];
/// Add packed unsigned word integers from xmm2/m128 and xmm1 saturate the results (SSE).
pub static PADDUSW: [u8; 3] = [0x66, 0x0f, 0xdd];
/// Compare packed data for equal (SSE2).
pub static PCMPEQB: [u8; 3] = [0x66, 0x0f, 0x74];