diff options
Diffstat (limited to 'js/src/jit-test/tests/ion/bug889451.js')
| -rw-r--r-- | js/src/jit-test/tests/ion/bug889451.js | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/ion/bug889451.js b/js/src/jit-test/tests/ion/bug889451.js new file mode 100644 index 0000000000..5c7c9ce4e6 --- /dev/null +++ b/js/src/jit-test/tests/ion/bug889451.js @@ -0,0 +1,18 @@ +/* +js> (((-1 >>> 1) + 1) * Math.pow(2, 52 - 30) + 1) & 1 +0 +js> (((-1 >> 1) + 1) * Math.pow(2, 52 - 30) + 1) & 1 +1 +*/ + +function f(x) { + if (x >= 0) { + // if it does not fail, try with lower power of 2. + return (((x >>> 1) + 1) * 4194304 /* 2 ** (52 - 30) */ + 1) & 1; + } + return 2; +} + +assertEq(f(-1 >>> 1), 1); +assertEq(f(-1 >>> 0), 0); +assertEq(f(-1 >>> 0), 0); |