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Constant permute.

This commit is contained in:
Ben Vanik 2014-05-27 12:03:40 -07:00
parent 2d765461ff
commit 7635bb71a0
1 changed files with 20 additions and 5 deletions
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25
src/alloy/backend/x64/x64_sequences.cc
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@ -4219,13 +4219,28 @@ EMITTER(PERMUTE_I32, MATCH(I<OPCODE_PERMUTE, V128<>, I32<>, V128<>, V128<>>)) {
(((control >> 18) & 0x1) << 1) |
(((control >> 10) & 0x1) << 2) |
(((control >> 2) & 0x1) << 3);
if (i.dest != i.src3) {
e.vpshufd(i.dest, i.src2, src_control);
e.vpshufd(e.xmm0, i.src3, src_control);
// TODO(benvanik): if src2/src3 are constants, shuffle now!
Xmm src2;
if (i.src2.is_constant) {
src2 = e.xmm1;
e.LoadConstantXmm(src2, i.src2.constant());
} else {
src2 = i.src2;
}
Xmm src3;
if (i.src3.is_constant) {
src3 = e.xmm2;
e.LoadConstantXmm(src3, i.src3.constant());
} else {
src3 = i.src3;
}
if (i.dest != src3) {
e.vpshufd(i.dest, src2, src_control);
e.vpshufd(e.xmm0, src3, src_control);
e.vpblendd(i.dest, e.xmm0, blend_control);
} else {
e.vmovaps(e.xmm0, i.src3);
e.vpshufd(i.dest, i.src2, src_control);
e.vmovaps(e.xmm0, src3);
e.vpshufd(i.dest, src2, src_control);
e.vpshufd(e.xmm0, e.xmm0, src_control);
e.vpblendd(i.dest, e.xmm0, blend_control);
}