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stage2: actually implement float casting

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This commit is contained in:
Vexu
2020-07-21 21:43:40 +03:00
parent c29c79b17a
commit dd89297388
2 changed files with 62 additions and 9 deletions
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11
src-self-hosted/Module.zig
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@@ -3437,7 +3437,16 @@ fn coerce(self: *Module, scope: *Scope, dest_type: Type, inst: *Inst) !*Inst {
}
} else if (dst_zig_tag == .ComptimeFloat or dst_zig_tag == .Float) {
if (src_zig_tag == .Float or src_zig_tag == .ComptimeFloat) {
return self.fail(scope, inst.src, "TODO float cast", .{});
const res = val.floatCast(scope.arena(), dest_type, self.target()) catch |err| switch (err) {
error.Overflow => return self.fail(
scope,
inst.src,
"cast of value {} to type '{}' loses information",
.{ val, dest_type },
),
error.OutOfMemory => return error.OutOfMemory,
};
return self.constInst(scope, inst.src, .{ .ty = dest_type, .val = res });
} else if (src_zig_tag == .Int or src_zig_tag == .ComptimeInt) {
return self.fail(scope, inst.src, "TODO int to float", .{});
}