[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/PowerPC/2007-10-21-LocalRegAllocAssert.ll b/llvm/test/CodeGen/PowerPC/2007-10-21-LocalRegAllocAssert.ll
index a60d11c..b136f21 100644
--- a/llvm/test/CodeGen/PowerPC/2007-10-21-LocalRegAllocAssert.ll
+++ b/llvm/test/CodeGen/PowerPC/2007-10-21-LocalRegAllocAssert.ll
@@ -18,8 +18,8 @@
 entry:
 	%storeCoordinator = alloca %struct.NSPersistentStoreCoordinator*		; <%struct.NSPersistentStoreCoordinator**> [#uses=0]
 	%tmp29 = call %struct.objc_object* (%struct.objc_object*, %struct._message_ref_t*, ...)* null( %struct.objc_object* null, %struct._message_ref_t* @"\01L_OBJC_MESSAGE_REF_2" )		; <%struct.objc_object*> [#uses=0]
-	%tmp34 = load %struct.NSString** @NSXMLStoreType, align 8		; <%struct.NSString*> [#uses=1]
-	%tmp37 = load %struct.objc_object* (%struct.objc_object*, %struct._message_ref_t*, ...)** getelementptr (%struct._message_ref_t* @"\01L_OBJC_MESSAGE_REF_5", i32 0, i32 0), align 8		; <%struct.objc_object* (%struct.objc_object*, %struct._message_ref_t*, ...)*> [#uses=1]
+	%tmp34 = load %struct.NSString*, %struct.NSString** @NSXMLStoreType, align 8		; <%struct.NSString*> [#uses=1]
+	%tmp37 = load %struct.objc_object* (%struct.objc_object*, %struct._message_ref_t*, ...)*, %struct.objc_object* (%struct.objc_object*, %struct._message_ref_t*, ...)** getelementptr (%struct._message_ref_t* @"\01L_OBJC_MESSAGE_REF_5", i32 0, i32 0), align 8		; <%struct.objc_object* (%struct.objc_object*, %struct._message_ref_t*, ...)*> [#uses=1]
 	%tmp42 = call %struct.objc_object* (%struct.objc_object*, %struct._message_ref_t*, ...)* null( %struct.objc_object* null, %struct._message_ref_t* @"\01L_OBJC_MESSAGE_REF_4", i32 1 )		; <%struct.objc_object*> [#uses=1]
 	%tmp45 = call %struct.objc_object* (%struct.objc_object*, %struct._message_ref_t*, ...)* %tmp37( %struct.objc_object* null, %struct._message_ref_t* @"\01L_OBJC_MESSAGE_REF_5", %struct.objc_object* %tmp42, %struct.NSString* null )		; <%struct.objc_object*> [#uses=1]
 	%tmp48 = call %struct.objc_object* (%struct.objc_object*, %struct._message_ref_t*, ...)* null( %struct.objc_object* null, %struct._message_ref_t* @"\01L_OBJC_MESSAGE_REF_6", %struct.NSString* %tmp34, i8* null, %struct.NSURL* null, %struct.objc_object* %tmp45, %struct.NSError** null )		; <%struct.objc_object*> [#uses=0]