[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/Mips/vector-setcc.ll b/llvm/test/CodeGen/Mips/vector-setcc.ll
index aeff491..64b84e4 100644
--- a/llvm/test/CodeGen/Mips/vector-setcc.ll
+++ b/llvm/test/CodeGen/Mips/vector-setcc.ll
@@ -6,8 +6,8 @@
 
 define void @foo0() nounwind {
 entry:
-  %0 = load <4 x i32>* @a, align 16
-  %1 = load <4 x i32>* @b, align 16
+  %0 = load <4 x i32>, <4 x i32>* @a, align 16
+  %1 = load <4 x i32>, <4 x i32>* @b, align 16
   %cmp = icmp slt <4 x i32> %0, %1
   %sext = sext <4 x i1> %cmp to <4 x i32>
   store <4 x i32> %sext, <4 x i32>* @g0, align 16