Move the personality function from LandingPadInst to Function

The personality routine currently lives in the LandingPadInst.

This isn't desirable because:
- All LandingPadInsts in the same function must have the same
  personality routine.  This means that each LandingPadInst beyond the
  first has an operand which produces no additional information.

- There is ongoing work to introduce EH IR constructs other than
  LandingPadInst.  Moving the personality routine off of any one
  particular Instruction and onto the parent function seems a lot better
  than have N different places a personality function can sneak onto an
  exceptional function.

Differential Revision: http://reviews.llvm.org/D10429

llvm-svn: 239940
diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/preprocess.ll b/llvm/test/Transforms/RewriteStatepointsForGC/preprocess.ll
index 6021531..012fff5 100644
--- a/llvm/test/Transforms/RewriteStatepointsForGC/preprocess.ll
+++ b/llvm/test/Transforms/RewriteStatepointsForGC/preprocess.ll
@@ -40,7 +40,7 @@
 
 ; Need to delete unreachable gc.statepoint invoke - tested seperately given
 ; a correct implementation could only remove the instructions, not the block
-define void @test8() gc "statepoint-example" {
+define void @test8() gc "statepoint-example" personality i32 ()* undef {
 ; CHECK-LABEL: test8
 ; CHECK-NOT: gc.statepoint
   ret void
@@ -53,7 +53,7 @@
   ret void
 
 exceptional_return:                               ; preds = %entry
-  %landing_pad4 = landingpad { i8*, i32 } personality i32 ()* undef
+  %landing_pad4 = landingpad { i8*, i32 }
           cleanup
   ret void
 }