[LLVMbugs] [Bug 11555] OpenCL shift counts can overflow

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=11555

Richard Smith <richard-llvm at metafoo.co.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|REOPENED                    |RESOLVED
                 CC|                            |richard-llvm at metafoo.co.uk
         Resolution|---                         |INVALID

--- Comment #3 from Richard Smith <richard-llvm at metafoo.co.uk> ---
Per OpenCL 6.3/j:

"The result of E1 << E2 is E1 left-shifted by log2(N) least significant bits in
E2 viewed as an unsigned integer value, where N is the number of bits used to
represent the data type of E1 after integer promotion"

After integer promotion, E1 has type 'int', so the result of your shift is 256.
Your test is wrong.

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