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Legalize [u|s]widen_high for x86

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Use `x86_palignr` and `[u|s]widen_low` for legalizing this instruction.
This commit is contained in:
Andrew Brown
2020-07-07 16:22:26 -07:00
parent c8ddf8a34c
commit f0b083c6ad
2 changed files with 41 additions and 0 deletions
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25
cranelift/codegen/meta/src/isa/x86/legalize.rs
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@@ -407,13 +407,18 @@ fn define_simd(
let umax = insts.by_name("umax");
let umin = insts.by_name("umin");
let snarrow = insts.by_name("snarrow");
let swiden_high = insts.by_name("swiden_high");
let swiden_low = insts.by_name("swiden_low");
let ushr_imm = insts.by_name("ushr_imm");
let ushr = insts.by_name("ushr");
let uwiden_high = insts.by_name("uwiden_high");
let uwiden_low = insts.by_name("uwiden_low");
let vconst = insts.by_name("vconst");
let vall_true = insts.by_name("vall_true");
let vany_true = insts.by_name("vany_true");
let vselect = insts.by_name("vselect");
let x86_palignr = x86_instructions.by_name("x86_palignr");
let x86_pmaxs = x86_instructions.by_name("x86_pmaxs");
let x86_pmaxu = x86_instructions.by_name("x86_pmaxu");
let x86_pmins = x86_instructions.by_name("x86_pmins");
@@ -786,6 +791,26 @@ fn define_simd(
);
}
// SIMD widen
for ty in &[I8, I16] {
let swiden_high = swiden_high.bind(vector(*ty, sse_vector_size));
narrow.legalize(
def!(b = swiden_high(a)),
vec![
def!(c = x86_palignr(a, a, uimm8_eight)),
def!(b = swiden_low(c)),
],
);
let uwiden_high = uwiden_high.bind(vector(*ty, sse_vector_size));
narrow.legalize(
def!(b = uwiden_high(a)),
vec![
def!(c = x86_palignr(a, a, uimm8_eight)),
def!(b = uwiden_low(c)),
],
);
}
narrow.custom_legalize(shuffle, "convert_shuffle");
narrow.custom_legalize(extractlane, "convert_extractlane");
narrow.custom_legalize(insertlane, "convert_insertlane");