[opaque pointer type] Add textual IR support for explicit type parameter to load instruction

Essentially the same as the GEP change in r230786.

A similar migration script can be used to update test cases, though a few more
test case improvements/changes were required this time around: (r229269-r229278)

import fileinput
import sys
import re

pat = re.compile(r"((?:=|:|^)\s*load (?:atomic )?(?:volatile )?(.*?))(| addrspace\(\d+\) *)\*($| *(?:%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|\[\[[a-zA-Z]|\{\{).*$)")

for line in sys.stdin:
  sys.stdout.write(re.sub(pat, r"\1, \2\3*\4", line))

Reviewers: rafael, dexonsmith, grosser

Differential Revision: http://reviews.llvm.org/D7649

llvm-svn: 230794
diff --git a/llvm/test/CodeGen/X86/cppeh-catch-all.ll b/llvm/test/CodeGen/X86/cppeh-catch-all.ll
index cf7b364..b48d534 100644
--- a/llvm/test/CodeGen/X86/cppeh-catch-all.ll
+++ b/llvm/test/CodeGen/X86/cppeh-catch-all.ll
@@ -39,7 +39,7 @@
   br label %catch
 
 catch:                                            ; preds = %lpad
-  %exn = load i8** %exn.slot
+  %exn = load i8*, i8** %exn.slot
   %3 = call i8* @llvm.eh.begincatch(i8* %exn) #3
   call void @_Z16handle_exceptionv()
   br label %invoke.cont2
@@ -57,7 +57,7 @@
 ; CHECK:   %eh.alloc = call i8* @llvm.framerecover(i8* bitcast (void ()* @_Z4testv to i8*), i8* %1)
 ; CHECK:   %eh.data = bitcast i8* %eh.alloc to %struct._Z4testv.ehdata*
 ; CHECK:   %eh.obj.ptr = getelementptr inbounds %struct._Z4testv.ehdata, %struct._Z4testv.ehdata* %eh.data, i32 0, i32 1
-; CHECK:   %eh.obj = load i8** %eh.obj.ptr
+; CHECK:   %eh.obj = load i8*, i8** %eh.obj.ptr
 ; CHECK:   call void @_Z16handle_exceptionv()
 ; CHECK:   ret i8* blockaddress(@_Z4testv, %try.cont)
 ; CHECK: }