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stage2: implement @bitReverse for vectors

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This commit is contained in:
John Schmidt
2022-03-18 13:29:00 +01:00
parent f3f5a5d05b
commit 870341e32e
2 changed files with 122 additions and 16 deletions
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76
test/behavior/bitreverse.zig
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@@ -87,3 +87,79 @@ fn testBitReverse() !void {
var neg32: i32 = -16773785;
try expect(@bitReverse(i32, @as(i32, -16773785)) == @bitReverse(i32, neg32));
}
fn vector8() !void {
var v = @Vector(2, u8){ 0x12, 0x23 };
var result = @bitReverse(u8, v);
try expect(result[0] == 0x48);
try expect(result[1] == 0xc4);
}
test "bitReverse vectors u8" {
if (builtin.zig_backend == .stage1) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
comptime try vector8();
try vector8();
}
fn vector16() !void {
var v = @Vector(2, u16){ 0x1234, 0x2345 };
var result = @bitReverse(u16, v);
try expect(result[0] == 0x2c48);
try expect(result[1] == 0xa2c4);
}
test "bitReverse vectors u16" {
if (builtin.zig_backend == .stage1) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
comptime try vector16();
try vector16();
}
fn vector24() !void {
var v = @Vector(2, u24){ 0x123456, 0x234567 };
var result = @bitReverse(u24, v);
try expect(result[0] == 0x6a2c48);
try expect(result[1] == 0xe6a2c4);
}
test "bitReverse vectors u24" {
if (builtin.zig_backend == .stage1) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
comptime try vector24();
try vector24();
}
fn vector0() !void {
var v = @Vector(2, u0){ 0, 0 };
var result = @bitReverse(u0, v);
try expect(result[0] == 0);
try expect(result[1] == 0);
}
test "bitReverse vectors u0" {
if (builtin.zig_backend == .stage1) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
comptime try vector0();
try vector0();
}