[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/ARM/2008-07-24-CodeGenPrepCrash.ll b/llvm/test/CodeGen/ARM/2008-07-24-CodeGenPrepCrash.ll
index e86bc1b..cf98d7f 100644
--- a/llvm/test/CodeGen/ARM/2008-07-24-CodeGenPrepCrash.ll
+++ b/llvm/test/CodeGen/ARM/2008-07-24-CodeGenPrepCrash.ll
@@ -4,6 +4,6 @@
 define void @main({ i32 }*) {
 entry:
 	%sret1 = alloca { i32 }		; <{ i32 }*> [#uses=1]
-	load { i32 }* %sret1		; <{ i32 }>:1 [#uses=0]
+	load { i32 }, { i32 }* %sret1		; <{ i32 }>:1 [#uses=0]
 	ret void
 }