diff options
Diffstat (limited to 'js/src/jit-test/tests/jaeger/setPropTypeGuard.js')
-rw-r--r-- | js/src/jit-test/tests/jaeger/setPropTypeGuard.js | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/jaeger/setPropTypeGuard.js b/js/src/jit-test/tests/jaeger/setPropTypeGuard.js new file mode 100644 index 0000000000..3786fc88af --- /dev/null +++ b/js/src/jit-test/tests/jaeger/setPropTypeGuard.js @@ -0,0 +1,23 @@ + +/* + * Get a SETPROP site which is monitored (unknown lhs) and is repeatedly + * invoked on objects with the same shape but different types (and without + * triggering a recompile of the function). The SETPROP PIC needs a type guard + * when the object is being monitored. + */ +var x = {g:0}; +var y = {g:0,f:"fubar"}; +x.f = 10; + +function foo(x) { + for (var i = 0; i < 30; i++) + x.f = 10; +} +function access(x) { + return x.f + 10; +} +foo(Object.create({})); +eval("foo(x)"); +assertEq(access(y), "fubar10"); +eval("foo(y)"); +assertEq(access(y), 20); |