The inliner is breaking inlining invoke instructions where there is a PHI node
in the exception destination, and the inlined function contains an unwind
instruction.

Here is a testcase, which is Inline/2003-10-26-InlineInvokeExceptionDestPhi.ll

; RUN: llvm-as < %s | opt -inline -disable-output

implementation

linkonce void %foo() {
  unwind
}

int %test() {
BB1:
        invoke void %foo() to label %Cont except label %Cont
Cont:
        %A = phi int [ 0, %BB1], [0, %BB1]
        ret int %A
}

This is now fixed:
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20031021/008858.html