language-servers/roc
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emit LLVM IR that can be compiled to wasm

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This commit is contained in:
Folkert 2021-08-24 20:56:13 +02:00
parent 5a7a9e9520
commit 0a7f7a2772
9 changed files with 33 additions and 25 deletions
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28
compiler/builtins/bitcode/src/str.zig
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@ -14,6 +14,8 @@ const InPlace = enum(u8) {
Clone,
};
const HEL = [_]u8{ 'h', 'e', 'l' };
const SMALL_STR_MAX_LENGTH = small_string_size - 1;
const small_string_size = 2 * @sizeOf(usize);
const blank_small_string: [@sizeOf(RocStr)]u8 = init_blank_small_string(small_string_size);
@ -308,17 +310,17 @@ pub const RocStr = extern struct {
return (ptr - 1)[0] == utils.REFCOUNT_ONE;
}
pub fn asSlice(self: *RocStr) []u8 {
pub fn asSlice(self: RocStr) []u8 {
return self.asU8ptr()[0..self.len()];
}
pub fn asU8ptr(self: *RocStr) [*]u8 {
pub fn asU8ptr(self: RocStr) [*]u8 {
// Since this conditional would be prone to branch misprediction,
// make sure it will compile to a cmov.
// return if (self.isSmallStr() or self.isEmpty()) (&@bitCast([@sizeOf(RocStr)]u8, self)) else (@ptrCast([*]u8, self.str_bytes));
if (self.isSmallStr() or self.isEmpty()) {
const as_int = @ptrToInt(self);
const as_int = @ptrToInt(&self);
const as_ptr = @intToPtr([*]u8, as_int);
return as_ptr;
} else {
@ -430,20 +432,14 @@ fn strFromIntHelp(comptime T: type, int: T) RocStr {
// Str.fromFloat
pub fn strFromFloatC(float: f64) callconv(.C) RocStr {
// NOTE the compiled zig for float formatting seems to use LLVM11-specific features
// hopefully we can use zig instead of snprintf in the future when we upgrade
// const c = @cImport({
// // See https://github.com/ziglang/zig/issues/515
// @cDefine("_NO_CRT_STDIO_INLINE", "1");
// @cInclude("stdio.h");
// });
// var buf: [100]u8 = undefined;
//
// const result = c.snprintf(&buf, 100, "%f", float);
//
// return RocStr.init(&buf, @intCast(usize, result));
return @call(.{ .modifier = always_inline }, strFromFloatHelp, .{ f64, float });
}
@panic("nope!");
fn strFromFloatHelp(comptime T: type, float: T) RocStr {
var buf: [100]u8 = undefined;
const result = std.fmt.bufPrint(&buf, "{d}", .{float}) catch unreachable;
return RocStr.init(&buf, result.len);
}
// Str.split