[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/2005-08-15-AddRecIV.ll b/llvm/test/Transforms/LoopStrengthReduce/2005-08-15-AddRecIV.ll
index f13483c..7ee1e63 100644
--- a/llvm/test/Transforms/LoopStrengthReduce/2005-08-15-AddRecIV.ll
+++ b/llvm/test/Transforms/LoopStrengthReduce/2005-08-15-AddRecIV.ll
@@ -48,7 +48,7 @@
 loopentry.4:		; preds = %loopentry.4, %loopexit.3
 	%indvar340 = phi i32 [ 0, %loopexit.3 ], [ %indvar.next341, %loopentry.4 ]		; <i32> [#uses=2]
 	%tmp. = add i32 %indvar340, %indvar342		; <i32> [#uses=1]
-	%tmp.526 = load i32** null		; <i32*> [#uses=1]
+	%tmp.526 = load i32*, i32** null		; <i32*> [#uses=1]
 	%gep.upgrd.1 = zext i32 %tmp. to i64		; <i64> [#uses=1]
 	%tmp.528 = getelementptr i32, i32* %tmp.526, i64 %gep.upgrd.1		; <i32*> [#uses=1]
 	store i32 0, i32* %tmp.528