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andrewrkandrewrk
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Merge pull request #2465 from LemonBoy/builtins-for-wasm
A few builtins for wasm
2 parents 1606dae + 7fb55ce commit bcf4d20

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‎CMakeLists.txt

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@@ -695,6 +695,9 @@ set(ZIG_STD_FILES
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"special/compiler_rt/muloti4.zig"
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"special/compiler_rt/mulodi4.zig"
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"special/compiler_rt/multi3.zig"
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"special/compiler_rt/ashlti3.zig"
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"special/compiler_rt/ashrti3.zig"
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"special/compiler_rt/lshrti3.zig"
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"special/compiler_rt/negXf2.zig"
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"special/compiler_rt/popcountdi2.zig"
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"special/compiler_rt/truncXfYf2.zig"

‎std/special/compiler_rt.zig

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@@ -62,6 +62,10 @@ comptime {
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@export("__divsf3", @import("compiler_rt/divsf3.zig").__divsf3, linkage);
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@export("__divdf3", @import("compiler_rt/divdf3.zig").__divdf3, linkage);
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@export("__ashlti3", @import("compiler_rt/ashlti3.zig").__ashlti3, linkage);
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@export("__lshrti3", @import("compiler_rt/lshrti3.zig").__lshrti3, linkage);
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@export("__ashrti3", @import("compiler_rt/ashrti3.zig").__ashrti3, linkage);
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6569
@export("__floatsidf", @import("compiler_rt/floatsiXf.zig").__floatsidf, linkage);
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@export("__floatsisf", @import("compiler_rt/floatsiXf.zig").__floatsisf, linkage);
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@export("__floatdidf", @import("compiler_rt/floatdidf.zig").__floatdidf, linkage);

‎std/special/compiler_rt/ashlti3.zig

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@@ -0,0 +1,41 @@
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const builtin = @import("builtin");
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const compiler_rt = @import("../compiler_rt.zig");
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pub extern fn __ashlti3(a: i128, b: i32) i128 {
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var input = twords{ .all = a };
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var result: twords = undefined;
7+
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if (b > 63) {
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// 64 <= b < 128
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result.s.low = 0;
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result.s.high = input.s.low << @intCast(u6, b - 64);
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} else {
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// 0 <= b < 64
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if (b == 0) return a;
15+
result.s.low = input.s.low << @intCast(u6, b);
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result.s.high = input.s.low >> @intCast(u6, 64 - b);
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result.s.high |= input.s.high << @intCast(u6, b);
18+
}
19+
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return result.all;
21+
}
22+
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const twords = extern union {
24+
all: i128,
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s: S,
26+
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const S = if (builtin.endian == builtin.Endian.Little)
28+
struct {
29+
low: u64,
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high: u64,
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}
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else
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struct {
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high: u64,
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low: u64,
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};
37+
};
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test "import ashlti3" {
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_ = @import("ashlti3_test.zig");
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}

‎std/special/compiler_rt/ashlti3_test.zig

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const __ashlti3 = @import("ashlti3.zig").__ashlti3;
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const testing = @import("std").testing;
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fn test__ashlti3(a: i128, b: i32, expected: i128) void {
5+
const x = __ashlti3(a, b);
6+
testing.expect(x == expected);
7+
}
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test "ashlti3" {
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 0, @bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 1, @bitCast(i128, @intCast(u128, 0xFDB97530ECA8642BFDB97530ECA8642A)));
12+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 2, @bitCast(i128, @intCast(u128, 0xFB72EA61D950C857FB72EA61D950C854)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 3, @bitCast(i128, @intCast(u128, 0xF6E5D4C3B2A190AFF6E5D4C3B2A190A8)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 4, @bitCast(i128, @intCast(u128, 0xEDCBA9876543215FEDCBA98765432150)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 28, @bitCast(i128, @intCast(u128, 0x876543215FEDCBA98765432150000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 29, @bitCast(i128, @intCast(u128, 0x0ECA8642BFDB97530ECA8642A0000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 30, @bitCast(i128, @intCast(u128, 0x1D950C857FB72EA61D950C8540000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 31, @bitCast(i128, @intCast(u128, 0x3B2A190AFF6E5D4C3B2A190A80000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 32, @bitCast(i128, @intCast(u128, 0x76543215FEDCBA987654321500000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 33, @bitCast(i128, @intCast(u128, 0xECA8642BFDB97530ECA8642A00000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 34, @bitCast(i128, @intCast(u128, 0xD950C857FB72EA61D950C85400000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 35, @bitCast(i128, @intCast(u128, 0xB2A190AFF6E5D4C3B2A190A800000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 36, @bitCast(i128, @intCast(u128, 0x6543215FEDCBA9876543215000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 60, @bitCast(i128, @intCast(u128, 0x5FEDCBA9876543215000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 61, @bitCast(i128, @intCast(u128, 0xBFDB97530ECA8642A000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 62, @bitCast(i128, @intCast(u128, 0x7FB72EA61D950C854000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 63, @bitCast(i128, @intCast(u128, 0xFF6E5D4C3B2A190A8000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 64, @bitCast(i128, @intCast(u128, 0xFEDCBA98765432150000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 65, @bitCast(i128, @intCast(u128, 0xFDB97530ECA8642A0000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 66, @bitCast(i128, @intCast(u128, 0xFB72EA61D950C8540000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 67, @bitCast(i128, @intCast(u128, 0xF6E5D4C3B2A190A80000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 68, @bitCast(i128, @intCast(u128, 0xEDCBA987654321500000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 92, @bitCast(i128, @intCast(u128, 0x87654321500000000000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 93, @bitCast(i128, @intCast(u128, 0x0ECA8642A00000000000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 94, @bitCast(i128, @intCast(u128, 0x1D950C85400000000000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 95, @bitCast(i128, @intCast(u128, 0x3B2A190A800000000000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 96, @bitCast(i128, @intCast(u128, 0x76543215000000000000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 97, @bitCast(i128, @intCast(u128, 0xECA8642A000000000000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 98, @bitCast(i128, @intCast(u128, 0xD950C854000000000000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 99, @bitCast(i128, @intCast(u128, 0xB2A190A8000000000000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 100, @bitCast(i128, @intCast(u128, 0x65432150000000000000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 124, @bitCast(i128, @intCast(u128, 0x50000000000000000000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 125, @bitCast(i128, @intCast(u128, 0xA0000000000000000000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 126, @bitCast(i128, @intCast(u128, 0x40000000000000000000000000000000)));
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test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 127, @bitCast(i128, @intCast(u128, 0x80000000000000000000000000000000)));
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}

‎std/special/compiler_rt/ashrti3.zig

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const builtin = @import("builtin");
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const compiler_rt = @import("../compiler_rt.zig");
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4+
pub extern fn __ashrti3(a: i128, b: i32) i128 {
5+
var input = twords{ .all = a };
6+
var result: twords = undefined;
7+
8+
if (b > 63) {
9+
// 64 <= b < 128
10+
result.s.low = input.s.high >> @intCast(u6, b - 64);
11+
result.s.high = input.s.high >> 63;
12+
} else {
13+
// 0 <= b < 64
14+
if (b == 0) return a;
15+
result.s.low = input.s.high << @intCast(u6, 64 - b);
16+
// Avoid sign-extension here
17+
result.s.low |= @bitCast(i64, @bitCast(u64, input.s.low) >> @intCast(u6, b));
18+
result.s.high = input.s.high >> @intCast(u6, b);
19+
}
20+
21+
return result.all;
22+
}
23+
24+
const twords = extern union {
25+
all: i128,
26+
s: S,
27+
28+
const S = if (builtin.endian == builtin.Endian.Little)
29+
struct {
30+
low: i64,
31+
high: i64,
32+
}
33+
else
34+
struct {
35+
high: i64,
36+
low: i64,
37+
};
38+
};
39+
40+
test "import ashrti3" {
41+
_ = @import("ashrti3_test.zig");
42+
}

‎std/special/compiler_rt/ashrti3_test.zig

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const __ashrti3 = @import("ashrti3.zig").__ashrti3;
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const testing = @import("std").testing;
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fn test__ashrti3(a: i128, b: i32, expected: i128) void {
5+
const x = __ashrti3(a, b);
6+
// @import("std").debug.warn("got 0x{x}\nexp 0x{x}\n", @truncate(u64,
7+
// @bitCast(u128, x) >> 64), @truncate(u64, @bitCast(u128, expected)) >> 64);
8+
testing.expect(x == expected);
9+
}
10+
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test "ashrti3" {
12+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 0, @bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)));
13+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 1, @bitCast(i128, @intCast(u128, 0xFF6E5D4C3B2A190AFF6E5D4C3B2A190A)));
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test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 2, @bitCast(i128, @intCast(u128, 0xFFB72EA61D950C857FB72EA61D950C85)));
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test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 3, @bitCast(i128, @intCast(u128, 0xFFDB97530ECA8642BFDB97530ECA8642)));
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test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 4, @bitCast(i128, @intCast(u128, 0xFFEDCBA9876543215FEDCBA987654321)));
17+
18+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 28, @bitCast(i128, @intCast(u128, 0xFFFFFFFFEDCBA9876543215FEDCBA987)));
19+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 29, @bitCast(i128, @intCast(u128, 0xFFFFFFFFF6E5D4C3B2A190AFF6E5D4C3)));
20+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 30, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFB72EA61D950C857FB72EA61)));
21+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 31, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFDB97530ECA8642BFDB97530)));
22+
23+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 32, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFEDCBA9876543215FEDCBA98)));
24+
25+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 33, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFF6E5D4C3B2A190AFF6E5D4C)));
26+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 34, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFB72EA61D950C857FB72EA6)));
27+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 35, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFDB97530ECA8642BFDB9753)));
28+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 36, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFEDCBA9876543215FEDCBA9)));
29+
30+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 60, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFEDCBA9876543215F)));
31+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 61, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFF6E5D4C3B2A190AF)));
32+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 62, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFB72EA61D950C857)));
33+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 63, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFDB97530ECA8642B)));
34+
35+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 64, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFEDCBA9876543215)));
36+
37+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 65, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFF6E5D4C3B2A190A)));
38+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 66, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFB72EA61D950C85)));
39+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 67, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFDB97530ECA8642)));
40+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 68, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFEDCBA987654321)));
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42+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 92, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFEDCBA987)));
43+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 93, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFF6E5D4C3)));
44+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 94, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFB72EA61)));
45+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 95, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFDB97530)));
46+
47+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 96, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFEDCBA98)));
48+
49+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 97, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFF6E5D4C)));
50+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 98, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFB72EA6)));
51+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 99, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFDB9753)));
52+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 100, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFEDCBA9)));
53+
54+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 124, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)));
55+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 125, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)));
56+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 126, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)));
57+
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 127, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)));
58+
}

‎std/special/compiler_rt/lshrti3.zig

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1+
const builtin = @import("builtin");
2+
const compiler_rt = @import("../compiler_rt.zig");
3+
4+
pub extern fn __lshrti3(a: i128, b: i32) i128 {
5+
var input = twords{ .all = a };
6+
var result: twords = undefined;
7+
8+
if (b > 63) {
9+
// 64 <= b < 128
10+
result.s.low = input.s.high >> @intCast(u6, b - 64);
11+
result.s.high = 0;
12+
} else {
13+
// 0 <= b < 64
14+
if (b == 0) return a;
15+
result.s.low = input.s.high << @intCast(u6, 64 - b);
16+
result.s.low |= input.s.low >> @intCast(u6, b);
17+
result.s.high = input.s.high >> @intCast(u6, b);
18+
}
19+
20+
return result.all;
21+
}
22+
23+
const twords = extern union {
24+
all: i128,
25+
s: S,
26+
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const S = if (builtin.endian == builtin.Endian.Little)
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struct {
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low: u64,
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high: u64,
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}
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else
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struct {
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high: u64,
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low: u64,
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};
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};
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test "import lshrti3" {
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_ = @import("lshrti3_test.zig");
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}

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