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Diffstat (limited to '')
-rw-r--r-- | js/src/jit-test/tests/ion/eliminate-type-barrier.js | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/eliminate-type-barrier.js b/js/src/jit-test/tests/ion/eliminate-type-barrier.js new file mode 100644 index 0000000000..75cc9a200a --- /dev/null +++ b/js/src/jit-test/tests/ion/eliminate-type-barrier.js @@ -0,0 +1,41 @@ +function foo(a) { + var y = 0; + for (var i = 0; i < 10; i++) { + var x = a[i]; + z = x.f; + if (x.h != null) + y = x.f.g; + } + return y; +} + +function foo2(a) { + var y = 0; + for (var i = 0; i < 10; i++) { + var x = a[i]; + if (x.f !== undefined) { + if (x.h != null) + y = x.f.g; + } + } + return y; +} + +a = []; +for (var i = 0; i < 10; i++) + a[i] = {f:null, h:null}; +for (var i = 0; i < 10; i++) { + a[i].f = {g:0}; + a[i].h = {}; +} +var q = a[0].h; +a[0].f = null; +a[0].h = null; + +foo(a); +foo2(a); + +a[0].h = q; + +try { foo(a); } catch (e) {} +try { foo2(a); } catch (e) {} |