[LLVMbugs] [Bug 10967] New: In OpenCL, conversions between different vector types are disallowed

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=10967

           Summary: In OpenCL, conversions between different vector types
                    are disallowed
           Product: clang
           Version: trunk
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Frontend
        AssignedTo: unassignedclangbugs at nondot.org
        ReportedBy: anton.lokhmotov at gmail.com
                CC: llvmbugs at cs.uiuc.edu


Created an attachment (id=7302)
 --> (http://llvm.org/bugs/attachment.cgi?id=7302)
Fix and tests

OpenCL 6.2.1 says: "Implicit conversions between built-in vector data types are
disallowed."  OpenCL 6.2.2 says: "Explicit casts between vector types are not 
legal."  For example:

uint4 u = (uint4)(1);
int4 i = u; // invalid implicit conversion
int4 e = (int4)u; // invalid explicit conversion

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