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disable behavior test for 128-bit cmpxchg

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once #2883 is done this can be revisited
This commit is contained in:
Andrew Kelley 2019-08-01 03:36:03 -04:00
parent 38b5812c48
commit 6cb4cac5cd
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GPG Key ID: 7C5F548F728501A9
1 changed files with 20 additions and 19 deletions
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39
test/stage1/behavior/atomics.zig
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@ -70,22 +70,23 @@ test "cmpxchg with ptr" {
expect(x == &data2);
}
test "128-bit cmpxchg" {
if (builtin.arch != .x86_64) {
return error.SkipZigTest;
}
var x: u128 align(16) = 1234; // TODO: https://github.com/ziglang/zig/issues/2987
if (@cmpxchgWeak(u128, &x, 99, 5678, .SeqCst, .SeqCst)) |x1| {
expect(x1 == 1234);
} else {
@panic("cmpxchg should have failed");
}
while (@cmpxchgWeak(u128, &x, 1234, 5678, .SeqCst, .SeqCst)) |x1| {
expect(x1 == 1234);
}
expect(x == 5678);
expect(@cmpxchgStrong(u128, &x, 5678, 42, .SeqCst, .SeqCst) == null);
expect(x == 42);
}
// TODO this test is disabled until this issue is resolved:
// https://github.com/ziglang/zig/issues/2883
// otherwise cross compiling will result in:
// lld: error: undefined symbol: __sync_val_compare_and_swap_16
//test "128-bit cmpxchg" {
// var x: u128 align(16) = 1234; // TODO: https://github.com/ziglang/zig/issues/2987
// if (@cmpxchgWeak(u128, &x, 99, 5678, .SeqCst, .SeqCst)) |x1| {
// expect(x1 == 1234);
// } else {
// @panic("cmpxchg should have failed");
// }
//
// while (@cmpxchgWeak(u128, &x, 1234, 5678, .SeqCst, .SeqCst)) |x1| {
// expect(x1 == 1234);
// }
// expect(x == 5678);
//
// expect(@cmpxchgStrong(u128, &x, 5678, 42, .SeqCst, .SeqCst) == null);
// expect(x == 42);
//}