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machinst x64: add packed shifts

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This commit is contained in:
Andrew Brown
2020-07-24 12:49:36 -07:00
parent 0398033447
commit c74a9d1225
4 changed files with 123 additions and 1 deletions
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48
cranelift/codegen/src/isa/x64/inst/emit.rs
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@@ -4,6 +4,7 @@ use crate::ir::TrapCode;
use crate::isa::x64::inst::args::*;
use crate::isa::x64::inst::*;
use crate::machinst::{MachBuffer, MachInstEmit, MachLabel};
use core::convert::TryInto;
use log::debug;
use regalloc::{Reg, RegClass, Writable};
use std::convert::TryFrom;
@@ -1122,6 +1123,53 @@ pub(crate) fn emit(
}
}
Inst::XmmRmiReg { opcode, src, dst } => {
let rex = RexFlags::clear_w();
let prefix = LegacyPrefix::_66;
if let RegMemImm::Imm { simm32 } = src {
let (opcode_bytes, reg_digit) = match opcode {
SseOpcode::Psllw => (0x0F71, 6),
SseOpcode::Pslld => (0x0F72, 6),
SseOpcode::Psllq => (0x0F73, 6),
SseOpcode::Psraw => (0x0F71, 4),
SseOpcode::Psrad => (0x0F72, 4),
SseOpcode::Psrlw => (0x0F71, 2),
SseOpcode::Psrld => (0x0F72, 2),
SseOpcode::Psrlq => (0x0F73, 2),
_ => panic!("invalid opcode: {}", opcode),
};
let dst_enc = reg_enc(dst.to_reg());
emit_std_enc_enc(sink, prefix, opcode_bytes, 2, reg_digit, dst_enc, rex);
let imm = (*simm32)
.try_into()
.expect("the immediate must be convertible to a u8");
sink.put1(imm);
} else {
let opcode_bytes = match opcode {
SseOpcode::Psllw => 0x0FF1,
SseOpcode::Pslld => 0x0FF2,
SseOpcode::Psllq => 0x0FF3,
SseOpcode::Psraw => 0x0FE1,
SseOpcode::Psrad => 0x0FE2,
SseOpcode::Psrlw => 0x0FD1,
SseOpcode::Psrld => 0x0FD2,
SseOpcode::Psrlq => 0x0FD3,
_ => panic!("invalid opcode: {}", opcode),
};
match src {
RegMemImm::Reg { reg } => {
emit_std_reg_reg(sink, prefix, opcode_bytes, 2, dst.to_reg(), *reg, rex);
}
RegMemImm::Mem { addr } => {
let addr = &addr.finalize(state);
emit_std_reg_mem(sink, prefix, opcode_bytes, 2, dst.to_reg(), addr, rex);
}
RegMemImm::Imm { .. } => unreachable!(),
}
};
}
Inst::Cmp_RMI_R {
size,
src: src_e,