[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/ARM/2007-05-03-BadPostIndexedLd.ll b/llvm/test/CodeGen/ARM/2007-05-03-BadPostIndexedLd.ll
index 7fd0bd5..f59d081 100644
--- a/llvm/test/CodeGen/ARM/2007-05-03-BadPostIndexedLd.ll
+++ b/llvm/test/CodeGen/ARM/2007-05-03-BadPostIndexedLd.ll
@@ -14,7 +14,7 @@
 
 define fastcc void @Draw7(i32 %Option, i32* %Status) {
 entry:
-	%tmp115.b = load i1* @FirstTime.4637.b		; <i1> [#uses=1]
+	%tmp115.b = load i1, i1* @FirstTime.4637.b		; <i1> [#uses=1]
 	br i1 %tmp115.b, label %cond_next239, label %cond_next.i
 
 cond_next.i:		; preds = %entry
@@ -88,11 +88,11 @@
 	br i1 %tmp1148, label %cond_next1275, label %cond_true1272
 
 cond_true1272:		; preds = %cond_next1267
-	%tmp1273 = load %struct.TestObj** null		; <%struct.TestObj*> [#uses=2]
+	%tmp1273 = load %struct.TestObj*, %struct.TestObj** null		; <%struct.TestObj*> [#uses=2]
 	%tmp2930.i = ptrtoint %struct.TestObj* %tmp1273 to i32		; <i32> [#uses=1]
 	%tmp42.i348 = sub i32 0, %tmp2930.i		; <i32> [#uses=1]
 	%tmp45.i = getelementptr %struct.TestObj, %struct.TestObj* %tmp1273, i32 0, i32 0		; <i8**> [#uses=2]
-	%tmp48.i = load i8** %tmp45.i		; <i8*> [#uses=1]
+	%tmp48.i = load i8*, i8** %tmp45.i		; <i8*> [#uses=1]
 	%tmp50.i350 = call i32 (i8*, i8*, ...)* @sprintf( i8* getelementptr ([256 x i8]* @Msg, i32 0, i32 0), i8* getelementptr ([48 x i8]* @.str53615, i32 0, i32 0), i8* null, i8** %tmp45.i, i8* %tmp48.i )		; <i32> [#uses=0]
 	br i1 false, label %cond_true.i632.i, label %Ut_TraceMsg.exit648.i