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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239940 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/SPARC/exception.ll

@@ -71,7 +71,7 @@
 ; V9PIC: .L_ZTIi.DW.stub:
 ; V9PIC-NEXT:   .xword _ZTIi
 
-define i32 @main(i32 %argc, i8** nocapture readnone %argv) unnamed_addr #0 {
+define i32 @main(i32 %argc, i8** nocapture readnone %argv) unnamed_addr #0 personality i32 (i32, i64, i8*, i8*)* @__gxx_personality_v0 {
 entry:
   %0 = icmp eq i32 %argc, 2
   %1 = tail call i8* @__cxa_allocate_exception(i32 4) #1
@@ -102,7 +102,7 @@ entry:
   ret i32 %6
 
 "8":                                              ; preds = %"4", %"3"
-  %exc = landingpad { i8*, i32 } personality i32 (i32, i64, i8*, i8*)* @__gxx_personality_v0
+  %exc = landingpad { i8*, i32 }
           catch %struct.__fundamental_type_info_pseudo* @_ZTIi
           catch %struct.__fundamental_type_info_pseudo* @_ZTIf
   %exc_ptr12 = extractvalue { i8*, i32 } %exc, 0