[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/Analysis/ScalarEvolution/min-max-exprs.ll b/llvm/test/Analysis/ScalarEvolution/min-max-exprs.ll
index b9ede6f..892fc23 100644
--- a/llvm/test/Analysis/ScalarEvolution/min-max-exprs.ll
+++ b/llvm/test/Analysis/ScalarEvolution/min-max-exprs.ll
@@ -35,7 +35,7 @@
 ; CHECK:           select i1 %tmp4, i64 %tmp5, i64 %tmp6
 ; CHECK-NEXT:  --> (-1 + (-1 * ((-1 + (-1 * (sext i32 {3,+,1}<nw><%bb1> to i64))) smax (-1 + (-1 * (sext i32 %N to i64))))))
   %tmp11 = getelementptr inbounds i32, i32* %A, i64 %tmp9
-  %tmp12 = load i32* %tmp11, align 4
+  %tmp12 = load i32, i32* %tmp11, align 4
   %tmp13 = shl nsw i32 %tmp12, 1
   %tmp14 = icmp sge i32 3, %i.0
   %tmp17 = add nsw i64 %i.0.1, -3