diff options
Diffstat (limited to 'tests/src/JIT/Regression/JitBlue/GitHub_8460/GitHub_8460.cs')
-rw-r--r-- | tests/src/JIT/Regression/JitBlue/GitHub_8460/GitHub_8460.cs | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/tests/src/JIT/Regression/JitBlue/GitHub_8460/GitHub_8460.cs b/tests/src/JIT/Regression/JitBlue/GitHub_8460/GitHub_8460.cs new file mode 100644 index 0000000000..f5c9aa281b --- /dev/null +++ b/tests/src/JIT/Regression/JitBlue/GitHub_8460/GitHub_8460.cs @@ -0,0 +1,38 @@ +// Licensed to the .NET Foundation under one or more agreements. +// The .NET Foundation licenses this file to you under the MIT license. +// See the LICENSE file in the project root for more information. + +using System; + +namespace bug +{ + class Program + { + static int Pass = 100; + static int Fail = -1; + + // This test is meant to check that in case of + // GT_EQ/NE(shift, 0), JIT doesn't optimize out + // 'test' instruction incorrectly, because shift + // operations on xarch don't modify flags if the + // shift count is zero. + static int Main(string[] args) + { + // Absolute bits + int bitCount = 0; + while ((0 != (100 >> bitCount)) && (31 > bitCount)) + { + bitCount++; + } + // Sign bit + bitCount++; + + if (bitCount != 8) + { + return Fail; + } + + return Pass; + } + } +} |