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Sema: remove redundant mul_add comptime vectorization

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Moving comptime vectorization into `Value` has proven to simplify and
clean up a lot of code.
This commit is contained in:
William Sengir 2022-03-26 15:25:31 -07:00
parent 97a53bb8a1
commit 6a48345649
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GPG Key ID: 83492BF162833F2A
1 changed files with 2 additions and 46 deletions
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48
src/Sema.zig
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@ -15190,52 +15190,8 @@ fn zirMulAdd(sema: *Sema, block: *Block, inst: Zir.Inst.Index) CompileError!Air.
if (maybe_addend) |addend_val| {
if (addend_val.isUndef()) return sema.addConstUndef(ty);
switch (ty.zigTypeTag()) {
.ComptimeFloat, .Float => {
const result_val = try Value.mulAdd(
ty,
mulend1_val,
mulend2_val,
addend_val,
sema.arena,
target,
);
return sema.addConstant(ty, result_val);
},
.Vector => {
const scalar_ty = ty.scalarType();
switch (scalar_ty.zigTypeTag()) {
.ComptimeFloat, .Float => {},
else => return sema.fail(block, src, "expected vector of floats, found vector of '{}'", .{scalar_ty.fmt(target)}),
}
const vec_len = ty.vectorLen();
const result_ty = try Type.vector(sema.arena, vec_len, scalar_ty);
var mulend1_buf: Value.ElemValueBuffer = undefined;
var mulend2_buf: Value.ElemValueBuffer = undefined;
var addend_buf: Value.ElemValueBuffer = undefined;
const elems = try sema.arena.alloc(Value, vec_len);
for (elems) |*elem, i| {
const mulend1_elem_val = mulend1_val.elemValueBuffer(i, &mulend1_buf);
const mulend2_elem_val = mulend2_val.elemValueBuffer(i, &mulend2_buf);
const addend_elem_val = addend_val.elemValueBuffer(i, &addend_buf);
elem.* = try Value.mulAdd(
scalar_ty,
mulend1_elem_val,
mulend2_elem_val,
addend_elem_val,
sema.arena,
target,
);
}
return sema.addConstant(
result_ty,
try Value.Tag.aggregate.create(sema.arena, elems),
);
},
else => unreachable,
}
const result_val = try Value.mulAdd(ty, mulend1_val, mulend2_val, addend_val, sema.arena, target);
return sema.addConstant(ty, result_val);
} else {
break :rs addend_src;
}