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[machinst x64]: implement bitmask

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This commit is contained in:
Andrew Brown
2020-10-28 13:18:20 -07:00
parent 5b9a21e099
commit 6725b6b129
5 changed files with 100 additions and 4 deletions
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8
cranelift/codegen/src/isa/x64/inst/emit.rs
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@@ -1762,6 +1762,7 @@ pub(crate) fn emit(
SseOpcode::Mulsd => (LegacyPrefixes::_F2, 0x0F59, 2),
SseOpcode::Orpd => (LegacyPrefixes::_66, 0x0F56, 2),
SseOpcode::Orps => (LegacyPrefixes::None, 0x0F56, 2),
SseOpcode::Packsswb => (LegacyPrefixes::_66, 0x0F63, 2),
SseOpcode::Paddb => (LegacyPrefixes::_66, 0x0FFC, 2),
SseOpcode::Paddd => (LegacyPrefixes::_66, 0x0FFE, 2),
SseOpcode::Paddq => (LegacyPrefixes::_66, 0x0FD4, 2),
@@ -2040,11 +2041,14 @@ pub(crate) fn emit(
dst_size,
} => {
let (prefix, opcode, dst_first) = match op {
SseOpcode::Cvttss2si => (LegacyPrefixes::_F3, 0x0F2C, true),
SseOpcode::Cvttsd2si => (LegacyPrefixes::_F2, 0x0F2C, true),
// Movd and movq use the same opcode; the presence of the REX prefix (set below)
// actually determines which is used.
SseOpcode::Movd | SseOpcode::Movq => (LegacyPrefixes::_66, 0x0F7E, false),
SseOpcode::Cvttss2si => (LegacyPrefixes::_F3, 0x0F2C, true),
SseOpcode::Cvttsd2si => (LegacyPrefixes::_F2, 0x0F2C, true),
SseOpcode::Movmskps => (LegacyPrefixes::None, 0x0F50, true),
SseOpcode::Movmskpd => (LegacyPrefixes::_66, 0x0F50, true),
SseOpcode::Pmovmskb => (LegacyPrefixes::_66, 0x0FD7, true),
_ => panic!("unexpected opcode {:?}", op),
};
let rex = match dst_size {