From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- .../tests/basic/testShiftRightArithmetic.js | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 js/src/jit-test/tests/basic/testShiftRightArithmetic.js (limited to 'js/src/jit-test/tests/basic/testShiftRightArithmetic.js') diff --git a/js/src/jit-test/tests/basic/testShiftRightArithmetic.js b/js/src/jit-test/tests/basic/testShiftRightArithmetic.js new file mode 100644 index 000000000..7268dc0ba --- /dev/null +++ b/js/src/jit-test/tests/basic/testShiftRightArithmetic.js @@ -0,0 +1,44 @@ +/* Test the proper operation of the arithmetic right shift operator. This is + * especially important on ARM as an explicit mask is required at the native + * instruction level. */ + +load(libdir + 'range.js'); + +/* Test different combinations of literals/variables. */ +var s = 4; +var t = 100; +assertEq(42 >> s, 2); +assertEq(s >> 1, 2); +assertEq(23 >> 3, 2); +assertEq(t >> s, 6); + + +function testShiftRightArithmetic() +{ + var r = []; + var i = 0; + var j = 0; + + var shifts = [0,1,7,8,15,16,23,24,31]; + + /* Samples from the simple shift range. */ + for (i = 0; i < shifts.length; i++) + r[j++] = -2147483648 >> shifts[i]; + + /* Samples outside the normal shift range. */ + for (i = 0; i < shifts.length; i++) + r[j++] = -2147483648 >> (shifts[i] + 32); + + /* Samples far outside the normal shift range. */ + for (i = 0; i < shifts.length; i++) + r[j++] = -2147483648 >> (shifts[i] + 224); + for (i = 0; i < shifts.length; i++) + r[j++] = -2147483648 >> (shifts[i] + 256); + + return r.join(","); +} +assertEq(testShiftRightArithmetic(), + "-2147483648,-1073741824,-16777216,-8388608,-65536,-32768,-256,-128,-1,"+ + "-2147483648,-1073741824,-16777216,-8388608,-65536,-32768,-256,-128,-1,"+ + "-2147483648,-1073741824,-16777216,-8388608,-65536,-32768,-256,-128,-1,"+ + "-2147483648,-1073741824,-16777216,-8388608,-65536,-32768,-256,-128,-1"); -- cgit v1.2.3