[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/dwarf-aranges.ll b/llvm/test/DebugInfo/X86/dwarf-aranges.ll
index 6873e58..081dc92 100644
--- a/llvm/test/DebugInfo/X86/dwarf-aranges.ll
+++ b/llvm/test/DebugInfo/X86/dwarf-aranges.ll
@@ -50,10 +50,10 @@
 
 define void @some_code() {
 entry:
-  %0 = load i32* @some_data, align 4, !dbg !14
-  %1 = load i32* @some_other, align 4, !dbg !14
+  %0 = load i32, i32* @some_data, align 4, !dbg !14
+  %1 = load i32, i32* @some_other, align 4, !dbg !14
   %add = add nsw i32 %0, %1, !dbg !14
-  %2 = load i32* @some_bss, align 4, !dbg !14
+  %2 = load i32, i32* @some_bss, align 4, !dbg !14
   %add1 = add nsw i32 %2, %add, !dbg !14
   store i32 %add1, i32* @some_bss, align 4, !dbg !14
   ret void, !dbg !15