[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/DebugInfo/X86/inline-member-function.ll b/llvm/test/DebugInfo/X86/inline-member-function.ll
index 68a211f..49c5a02 100644
--- a/llvm/test/DebugInfo/X86/inline-member-function.ll
+++ b/llvm/test/DebugInfo/X86/inline-member-function.ll
@@ -44,13 +44,13 @@
   %retval = alloca i32, align 4
   %tmp = alloca %struct.foo, align 1
   store i32 0, i32* %retval
-  %0 = load i32* @i, align 4, !dbg !23
+  %0 = load i32, i32* @i, align 4, !dbg !23
   store %struct.foo* %tmp, %struct.foo** %this.addr.i, align 8
   call void @llvm.dbg.declare(metadata %struct.foo** %this.addr.i, metadata !24, metadata !{!"0x102"}), !dbg !26
   store i32 %0, i32* %x.addr.i, align 4
   call void @llvm.dbg.declare(metadata i32* %x.addr.i, metadata !27, metadata !{!"0x102"}), !dbg !28
-  %this1.i = load %struct.foo** %this.addr.i
-  %1 = load i32* %x.addr.i, align 4, !dbg !28
+  %this1.i = load %struct.foo*, %struct.foo** %this.addr.i
+  %1 = load i32, i32* %x.addr.i, align 4, !dbg !28
   %add.i = add nsw i32 %1, 2, !dbg !28
   ret i32 %add.i, !dbg !23
 }