[LLVMbugs] [Bug 10769] code with shl and bitwise or instructions optimizes wrong

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=10769

Yuri <yuri at tsoft.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|INVALID                     |
           Severity|release blocker             |enhancement

--- Comment #2 from Yuri <yuri at tsoft.com> 2011-08-26 02:17:47 CDT ---
Logically, shl i8 1, 8 should evaluate to 0. That's what happens without
optimization in any CPU.
Computed by optimizer value should follow what CPUs normally do. It's cleaner
and less ambiguous way of doing this.

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