[LLVMbugs] [Bug 8671] Incorrect code generation using opt for arch x86

[bugzilla-daemon at llvm.org]

http://llvm.org/bugs/show_bug.cgi?id=8671

Duncan Sands <baldrick at free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #3 from Duncan Sands <baldrick at free.fr> 2010-11-23 10:02:44 CST ---
The function @retzerosec takes two arguments, as seen here:

define void @retzerosec(%struct.U1* noalias sret %agg.result, %struct.U1* byval
align 4 %ux) nounwind {

But when you call it you only pass one argument, as seen here:

  call void (%struct.U1*, ...)* bitcast (void (%struct.U1*, %struct.U1*)*
@retzerosec to void (%struct.U1*, ...)*)(%struct.U1* noalias sret %temp)
nounwind

This results in undefined behaviour such as you are seeing.

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