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[machinst x64]: add extractlane implementation

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This commit is contained in:
Andrew Brown
2020-09-23 07:13:53 -07:00
parent 29fa894790
commit f4836f9ca9
4 changed files with 100 additions and 6 deletions
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19
cranelift/codegen/src/isa/x64/inst/mod.rs
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@@ -788,8 +788,6 @@ impl Inst {
imm: u8,
w: bool,
) -> Inst {
debug_assert!(dst.to_reg().get_class() == RegClass::V128);
debug_assert!(imm < 8);
Inst::XmmRmRImm {
op,
src,
@@ -1736,10 +1734,17 @@ fn x64_get_regs(inst: &Inst, collector: &mut RegUsageCollector) {
collector.add_mod(*dst);
}
}
Inst::XmmRmRImm { src, dst, .. } => {
Inst::XmmRmRImm { op, src, dst, .. } => {
if inst.produces_const() {
// No need to account for src, since src == dst.
collector.add_def(*dst);
} else if *op == SseOpcode::Pextrb
|| *op == SseOpcode::Pextrw
|| *op == SseOpcode::Pextrd
|| *op == SseOpcode::Pshufd
{
src.get_regs_as_uses(collector);
collector.add_def(*dst);
} else {
src.get_regs_as_uses(collector);
collector.add_mod(*dst);
@@ -2038,6 +2043,7 @@ fn x64_map_regs<RUM: RegUsageMapper>(inst: &mut Inst, mapper: &RUM) {
map_def(mapper, dst);
}
Inst::XmmRmRImm {
ref op,
ref mut src,
ref mut dst,
..
@@ -2045,6 +2051,13 @@ fn x64_map_regs<RUM: RegUsageMapper>(inst: &mut Inst, mapper: &RUM) {
if produces_const {
src.map_as_def(mapper);
map_def(mapper, dst);
} else if *op == SseOpcode::Pextrb
|| *op == SseOpcode::Pextrw
|| *op == SseOpcode::Pextrd
|| *op == SseOpcode::Pshufd
{
src.map_uses(mapper);
map_def(mapper, dst);
} else {
src.map_uses(mapper);
map_mod(mapper, dst);