[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/Generic/vector-identity-shuffle.ll b/llvm/test/CodeGen/Generic/vector-identity-shuffle.ll
index 332d6d8..d933f22 100644
--- a/llvm/test/CodeGen/Generic/vector-identity-shuffle.ll
+++ b/llvm/test/CodeGen/Generic/vector-identity-shuffle.ll
@@ -2,7 +2,7 @@
 
 
 define void @test(<4 x float>* %tmp2.i) {
-        %tmp2.i.upgrd.1 = load <4 x float>* %tmp2.i             ; <<4 x float>> [#uses=4]
+        %tmp2.i.upgrd.1 = load <4 x float>, <4 x float>* %tmp2.i             ; <<4 x float>> [#uses=4]
         %xFloat0.48 = extractelement <4 x float> %tmp2.i.upgrd.1, i32 0         ; <float> [#uses=1]
         %inFloat0.49 = insertelement <4 x float> undef, float %xFloat0.48, i32 0                ; <<4 x float>> [#uses=1]
         %xFloat1.50 = extractelement <4 x float> %tmp2.i.upgrd.1, i32 1         ; <float> [#uses=1]