[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/R600/selectcc-cnde-int.ll b/llvm/test/CodeGen/R600/selectcc-cnde-int.ll
index d568888..58a4ee7 100644
--- a/llvm/test/CodeGen/R600/selectcc-cnde-int.ll
+++ b/llvm/test/CodeGen/R600/selectcc-cnde-int.ll
@@ -4,7 +4,7 @@
 ;CHECK: CNDE_INT {{\*?}}T{{[0-9]+\.[XYZW], T[0-9]+\.[XYZW]}}, 1, literal.x,
 ;CHECK-NEXT: 2
 define void @test(i32 addrspace(1)* %out, i32 addrspace(1)* %in) {
-  %1 = load i32 addrspace(1)* %in
+  %1 = load i32, i32 addrspace(1)* %in
   %2 = icmp eq i32 %1, 0
   %3 = select i1 %2, i32 1, i32 2
   store i32 %3, i32 addrspace(1)* %out