Skip to content

Commit 7db2aa1

Browse files
LemonBoyLemonBoy
committed
compiler-rt: Add __ashlti3
1 parent 1c02238 commit 7db2aa1

File tree

4 files changed

+89
-0
lines changed

4 files changed

+89
-0
lines changed

‎CMakeLists.txt

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -695,6 +695,7 @@ set(ZIG_STD_FILES
695695
"special/compiler_rt/muloti4.zig"
696696
"special/compiler_rt/mulodi4.zig"
697697
"special/compiler_rt/multi3.zig"
698+
"special/compiler_rt/ashlti3.zig"
698699
"special/compiler_rt/negXf2.zig"
699700
"special/compiler_rt/popcountdi2.zig"
700701
"special/compiler_rt/truncXfYf2.zig"

‎std/special/compiler_rt.zig

Lines changed: 1 addition & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -62,6 +62,7 @@ comptime {
6262
@export("__divsf3", @import("compiler_rt/divsf3.zig").__divsf3, linkage);
6363
@export("__divdf3", @import("compiler_rt/divdf3.zig").__divdf3, linkage);
6464

65+
@export("__ashlti3", @import("compiler_rt/ashlti3.zig").__ashlti3, linkage);
6566
@export("__floatsidf", @import("compiler_rt/floatsiXf.zig").__floatsidf, linkage);
6667
@export("__floatsisf", @import("compiler_rt/floatsiXf.zig").__floatsisf, linkage);
6768
@export("__floatdidf", @import("compiler_rt/floatdidf.zig").__floatdidf, linkage);

‎std/special/compiler_rt/ashlti3.zig

Lines changed: 41 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,41 @@
1+
const builtin = @import("builtin");
2+
const compiler_rt = @import("../compiler_rt.zig");
3+
4+
pub extern fn __ashlti3(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 = 0;
11+
result.s.high = input.s.low << @intCast(u6, b - 64);
12+
} else {
13+
// 0 <= b < 64
14+
if (b == 0) return a;
15+
result.s.low = input.s.low << @intCast(u6, b);
16+
result.s.high = input.s.low >> @intCast(u6, 64 - 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+
27+
const S = if (builtin.endian == builtin.Endian.Little)
28+
struct {
29+
low: u64,
30+
high: u64,
31+
}
32+
else
33+
struct {
34+
high: u64,
35+
low: u64,
36+
};
37+
};
38+
39+
test "import ashlti3" {
40+
_ = @import("ashlti3_test.zig");
41+
}

‎std/special/compiler_rt/ashlti3_test.zig

Lines changed: 46 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -0,0 +1,46 @@
1+
const __ashlti3 = @import("ashlti3.zig").__ashlti3;
2+
const testing = @import("std").testing;
3+
4+
fn test__ashlti3(a: i128, b: i32, expected: i128) void {
5+
const x = __ashlti3(a, b);
6+
testing.expect(x == expected);
7+
}
8+
9+
test "ashlti3" {
10+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 0, @bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)));
11+
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)));
13+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 3, @bitCast(i128, @intCast(u128, 0xF6E5D4C3B2A190AFF6E5D4C3B2A190A8)));
14+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 4, @bitCast(i128, @intCast(u128, 0xEDCBA9876543215FEDCBA98765432150)));
15+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 28, @bitCast(i128, @intCast(u128, 0x876543215FEDCBA98765432150000000)));
16+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 29, @bitCast(i128, @intCast(u128, 0x0ECA8642BFDB97530ECA8642A0000000)));
17+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 30, @bitCast(i128, @intCast(u128, 0x1D950C857FB72EA61D950C8540000000)));
18+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 31, @bitCast(i128, @intCast(u128, 0x3B2A190AFF6E5D4C3B2A190A80000000)));
19+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 32, @bitCast(i128, @intCast(u128, 0x76543215FEDCBA987654321500000000)));
20+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 33, @bitCast(i128, @intCast(u128, 0xECA8642BFDB97530ECA8642A00000000)));
21+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 34, @bitCast(i128, @intCast(u128, 0xD950C857FB72EA61D950C85400000000)));
22+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 35, @bitCast(i128, @intCast(u128, 0xB2A190AFF6E5D4C3B2A190A800000000)));
23+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 36, @bitCast(i128, @intCast(u128, 0x6543215FEDCBA9876543215000000000)));
24+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 60, @bitCast(i128, @intCast(u128, 0x5FEDCBA9876543215000000000000000)));
25+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 61, @bitCast(i128, @intCast(u128, 0xBFDB97530ECA8642A000000000000000)));
26+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 62, @bitCast(i128, @intCast(u128, 0x7FB72EA61D950C854000000000000000)));
27+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 63, @bitCast(i128, @intCast(u128, 0xFF6E5D4C3B2A190A8000000000000000)));
28+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 64, @bitCast(i128, @intCast(u128, 0xFEDCBA98765432150000000000000000)));
29+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 65, @bitCast(i128, @intCast(u128, 0xFDB97530ECA8642A0000000000000000)));
30+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 66, @bitCast(i128, @intCast(u128, 0xFB72EA61D950C8540000000000000000)));
31+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 67, @bitCast(i128, @intCast(u128, 0xF6E5D4C3B2A190A80000000000000000)));
32+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 68, @bitCast(i128, @intCast(u128, 0xEDCBA987654321500000000000000000)));
33+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 92, @bitCast(i128, @intCast(u128, 0x87654321500000000000000000000000)));
34+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 93, @bitCast(i128, @intCast(u128, 0x0ECA8642A00000000000000000000000)));
35+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 94, @bitCast(i128, @intCast(u128, 0x1D950C85400000000000000000000000)));
36+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 95, @bitCast(i128, @intCast(u128, 0x3B2A190A800000000000000000000000)));
37+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 96, @bitCast(i128, @intCast(u128, 0x76543215000000000000000000000000)));
38+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 97, @bitCast(i128, @intCast(u128, 0xECA8642A000000000000000000000000)));
39+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 98, @bitCast(i128, @intCast(u128, 0xD950C854000000000000000000000000)));
40+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 99, @bitCast(i128, @intCast(u128, 0xB2A190A8000000000000000000000000)));
41+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 100, @bitCast(i128, @intCast(u128, 0x65432150000000000000000000000000)));
42+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 124, @bitCast(i128, @intCast(u128, 0x50000000000000000000000000000000)));
43+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 125, @bitCast(i128, @intCast(u128, 0xA0000000000000000000000000000000)));
44+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 126, @bitCast(i128, @intCast(u128, 0x40000000000000000000000000000000)));
45+
test__ashlti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 127, @bitCast(i128, @intCast(u128, 0x80000000000000000000000000000000)));
46+
}

0 commit comments

Comments
 (0)