[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/Thumb2/frameless2.ll b/llvm/test/CodeGen/Thumb2/frameless2.ll
index b2b78fc..3743354 100644
--- a/llvm/test/CodeGen/Thumb2/frameless2.ll
+++ b/llvm/test/CodeGen/Thumb2/frameless2.ll
@@ -6,7 +6,7 @@
 define void @vorbis_encode_noisebias_setup(i8* nocapture %vi.0.7.val, double %s, i32 %block, i32* nocapture %suppress, %struct.noise3* nocapture %in, %struct.noiseguard* nocapture %guard, double %userbias) nounwind {
 entry:
   %0 = getelementptr %struct.noiseguard, %struct.noiseguard* %guard, i32 %block, i32 2; <i32*> [#uses=1]
-  %1 = load i32* %0, align 4                      ; <i32> [#uses=1]
+  %1 = load i32, i32* %0, align 4                      ; <i32> [#uses=1]
   store i32 %1, i32* undef, align 4
   unreachable
 }