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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /js/src/jit-test/tests/jaeger/undoAdd.js
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'js/src/jit-test/tests/jaeger/undoAdd.js')
-rw-r--r--js/src/jit-test/tests/jaeger/undoAdd.js25
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
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--- /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);