[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/ScalarRepl/2006-11-07-InvalidArrayPromote.ll b/llvm/test/Transforms/ScalarRepl/2006-11-07-InvalidArrayPromote.ll
index a455e4f..2701fda 100644
--- a/llvm/test/Transforms/ScalarRepl/2006-11-07-InvalidArrayPromote.ll
+++ b/llvm/test/Transforms/ScalarRepl/2006-11-07-InvalidArrayPromote.ll
@@ -12,7 +12,7 @@
 	%tmp14 = getelementptr [2 x <4 x i32>], [2 x <4 x i32>]* %vsiidx, i32 0, i32 1		; <<4 x i32>*> [#uses=1]
 	store <4 x i32> %tmp10, <4 x i32>* %tmp14
 	%tmp15 = getelementptr [2 x <4 x i32>], [2 x <4 x i32>]* %vsiidx, i32 0, i32 0, i32 4		; <i32*> [#uses=1]
-	%tmp.upgrd.4 = load i32* %tmp15		; <i32> [#uses=1]
+	%tmp.upgrd.4 = load i32, i32* %tmp15		; <i32> [#uses=1]
 	ret i32 %tmp.upgrd.4
 }