compiler-rt: Add __ashrti3
parent
fbffece1b5
commit
7fb55ce2bb
|
@ -696,6 +696,7 @@ set(ZIG_STD_FILES
|
|||
"special/compiler_rt/mulodi4.zig"
|
||||
"special/compiler_rt/multi3.zig"
|
||||
"special/compiler_rt/ashlti3.zig"
|
||||
"special/compiler_rt/ashrti3.zig"
|
||||
"special/compiler_rt/lshrti3.zig"
|
||||
"special/compiler_rt/negXf2.zig"
|
||||
"special/compiler_rt/popcountdi2.zig"
|
||||
|
|
|
@ -64,6 +64,7 @@ comptime {
|
|||
|
||||
@export("__ashlti3", @import("compiler_rt/ashlti3.zig").__ashlti3, linkage);
|
||||
@export("__lshrti3", @import("compiler_rt/lshrti3.zig").__lshrti3, linkage);
|
||||
@export("__ashrti3", @import("compiler_rt/ashrti3.zig").__ashrti3, linkage);
|
||||
|
||||
@export("__floatsidf", @import("compiler_rt/floatsiXf.zig").__floatsidf, linkage);
|
||||
@export("__floatsisf", @import("compiler_rt/floatsiXf.zig").__floatsisf, linkage);
|
||||
|
|
|
@ -0,0 +1,42 @@
|
|||
const builtin = @import("builtin");
|
||||
const compiler_rt = @import("../compiler_rt.zig");
|
||||
|
||||
pub extern fn __ashrti3(a: i128, b: i32) i128 {
|
||||
var input = twords{ .all = a };
|
||||
var result: twords = undefined;
|
||||
|
||||
if (b > 63) {
|
||||
// 64 <= b < 128
|
||||
result.s.low = input.s.high >> @intCast(u6, b - 64);
|
||||
result.s.high = input.s.high >> 63;
|
||||
} else {
|
||||
// 0 <= b < 64
|
||||
if (b == 0) return a;
|
||||
result.s.low = input.s.high << @intCast(u6, 64 - b);
|
||||
// Avoid sign-extension here
|
||||
result.s.low |= @bitCast(i64, @bitCast(u64, input.s.low) >> @intCast(u6, b));
|
||||
result.s.high = input.s.high >> @intCast(u6, b);
|
||||
}
|
||||
|
||||
return result.all;
|
||||
}
|
||||
|
||||
const twords = extern union {
|
||||
all: i128,
|
||||
s: S,
|
||||
|
||||
const S = if (builtin.endian == builtin.Endian.Little)
|
||||
struct {
|
||||
low: i64,
|
||||
high: i64,
|
||||
}
|
||||
else
|
||||
struct {
|
||||
high: i64,
|
||||
low: i64,
|
||||
};
|
||||
};
|
||||
|
||||
test "import ashrti3" {
|
||||
_ = @import("ashrti3_test.zig");
|
||||
}
|
|
@ -0,0 +1,58 @@
|
|||
const __ashrti3 = @import("ashrti3.zig").__ashrti3;
|
||||
const testing = @import("std").testing;
|
||||
|
||||
fn test__ashrti3(a: i128, b: i32, expected: i128) void {
|
||||
const x = __ashrti3(a, b);
|
||||
// @import("std").debug.warn("got 0x{x}\nexp 0x{x}\n", @truncate(u64,
|
||||
// @bitCast(u128, x) >> 64), @truncate(u64, @bitCast(u128, expected)) >> 64);
|
||||
testing.expect(x == expected);
|
||||
}
|
||||
|
||||
test "ashrti3" {
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 0, @bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 1, @bitCast(i128, @intCast(u128, 0xFF6E5D4C3B2A190AFF6E5D4C3B2A190A)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 2, @bitCast(i128, @intCast(u128, 0xFFB72EA61D950C857FB72EA61D950C85)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 3, @bitCast(i128, @intCast(u128, 0xFFDB97530ECA8642BFDB97530ECA8642)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 4, @bitCast(i128, @intCast(u128, 0xFFEDCBA9876543215FEDCBA987654321)));
|
||||
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 28, @bitCast(i128, @intCast(u128, 0xFFFFFFFFEDCBA9876543215FEDCBA987)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 29, @bitCast(i128, @intCast(u128, 0xFFFFFFFFF6E5D4C3B2A190AFF6E5D4C3)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 30, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFB72EA61D950C857FB72EA61)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 31, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFDB97530ECA8642BFDB97530)));
|
||||
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 32, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFEDCBA9876543215FEDCBA98)));
|
||||
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 33, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFF6E5D4C3B2A190AFF6E5D4C)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 34, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFB72EA61D950C857FB72EA6)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 35, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFDB97530ECA8642BFDB9753)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 36, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFEDCBA9876543215FEDCBA9)));
|
||||
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 60, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFEDCBA9876543215F)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 61, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFF6E5D4C3B2A190AF)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 62, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFB72EA61D950C857)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 63, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFDB97530ECA8642B)));
|
||||
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 64, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFEDCBA9876543215)));
|
||||
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 65, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFF6E5D4C3B2A190A)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 66, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFB72EA61D950C85)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 67, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFDB97530ECA8642)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 68, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFEDCBA987654321)));
|
||||
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 92, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFEDCBA987)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 93, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFF6E5D4C3)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 94, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFB72EA61)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 95, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFDB97530)));
|
||||
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 96, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFEDCBA98)));
|
||||
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 97, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFF6E5D4C)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 98, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFB72EA6)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 99, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFDB9753)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 100, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFEDCBA9)));
|
||||
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 124, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 125, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 126, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)));
|
||||
test__ashrti3(@bitCast(i128, @intCast(u128, 0xFEDCBA9876543215FEDCBA9876543215)), 127, @bitCast(i128, @intCast(u128, 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)));
|
||||
}
|
Loading…
Reference in New Issue