diff options
Diffstat (limited to 'js/src/jit-test/tests/jaeger/undoAdd.js')
| -rw-r--r-- | js/src/jit-test/tests/jaeger/undoAdd.js | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/jaeger/undoAdd.js b/js/src/jit-test/tests/jaeger/undoAdd.js new file mode 100644 index 000000000..007a29c97 --- /dev/null +++ b/js/src/jit-test/tests/jaeger/undoAdd.js @@ -0,0 +1,25 @@ + +/* Test undoing addition in overflow paths when under heavy register pressure. */ + +function add1(x, y, a, b, res) { var nres = res + 0; var z = (x + a) + (y + b); assertEq(z, nres); } +function add2(x, y, a, b, res) { var nres = res + 0; var z = (x + a) + (y + b); assertEq(z, nres); } +function add3(x, y, a, b, res) { var nres = res + 0; var z = (x + a) + (y + b); assertEq(z, nres); } +add1(0x7ffffff0, 100, 0, 0, 2147483732); +add2(-1000, -0x80000000, 0, 0, -2147484648); +add3(-0x80000000, -1000, 0, 0, -2147484648); + +function cadd1(x, a, b, res) { + var nres = res + 0; + var nb = b + 0; + var z = (x + a) + 1000; + assertEq(z, nres + nb); +} +cadd1(0x7ffffff0, 0, 0, 2147484632); + +function cadd2(x, a, b, res) { + var nres = res + 0; + var nb = b + 0; + var z = (x + a) + (-0x80000000); + assertEq(z, nres + nb); +} +cadd2(-1000, 0, 0, -2147484648); |