[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/Transforms/LoopStrengthReduce/pr3086.ll b/llvm/test/Transforms/LoopStrengthReduce/pr3086.ll
index 085cbca..187c14f 100644
--- a/llvm/test/Transforms/LoopStrengthReduce/pr3086.ll
+++ b/llvm/test/Transforms/LoopStrengthReduce/pr3086.ll
@@ -10,7 +10,7 @@
 	br label %bb11
 
 bb5:		; preds = %bb9
-	%0 = load %struct.Lit** %storemerge, align 8		; <%struct.Lit*> [#uses=0]
+	%0 = load %struct.Lit*, %struct.Lit** %storemerge, align 8		; <%struct.Lit*> [#uses=0]
 	%indvar.next8 = add i64 %storemerge.rec, 1		; <i64> [#uses=1]
 	br label %bb9
 
@@ -21,7 +21,7 @@
 	br i1 %1, label %bb5, label %bb22
 
 bb11:		; preds = %bb22, %entry
-	%2 = load %struct.Cls** null, align 8		; <%struct.Cls*> [#uses=0]
+	%2 = load %struct.Cls*, %struct.Cls** null, align 8		; <%struct.Cls*> [#uses=0]
 	br label %bb22
 
 bb22:		; preds = %bb11, %bb9