[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/mem-rr-addr-mode.ll b/llvm/test/CodeGen/PowerPC/mem-rr-addr-mode.ll
index 57f6539..60a4bdb 100644
--- a/llvm/test/CodeGen/PowerPC/mem-rr-addr-mode.ll
+++ b/llvm/test/CodeGen/PowerPC/mem-rr-addr-mode.ll
@@ -6,11 +6,11 @@
 
 define void @func(<4 x float>* %a, <4 x float>* %b) {
         %tmp1 = getelementptr <4 x float>, <4 x float>* %b, i32 1            ; <<4 x float>*> [#uses=1]
-        %tmp = load <4 x float>* %tmp1          ; <<4 x float>> [#uses=1]
+        %tmp = load <4 x float>, <4 x float>* %tmp1          ; <<4 x float>> [#uses=1]
         %tmp3 = getelementptr <4 x float>, <4 x float>* %a, i32 1            ; <<4 x float>*> [#uses=1]
-        %tmp4 = load <4 x float>* %tmp3         ; <<4 x float>> [#uses=1]
+        %tmp4 = load <4 x float>, <4 x float>* %tmp3         ; <<4 x float>> [#uses=1]
         %tmp5 = fmul <4 x float> %tmp, %tmp4             ; <<4 x float>> [#uses=1]
-        %tmp8 = load <4 x float>* %b            ; <<4 x float>> [#uses=1]
+        %tmp8 = load <4 x float>, <4 x float>* %b            ; <<4 x float>> [#uses=1]
         %tmp9 = fadd <4 x float> %tmp5, %tmp8            ; <<4 x float>> [#uses=1]
         store <4 x float> %tmp9, <4 x float>* %a
         ret void