[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/Transforms/LoopStrengthReduce/AArch64/lsr-memcpy.ll b/llvm/test/Transforms/LoopStrengthReduce/AArch64/lsr-memcpy.ll
index c0ebc97..2120b2a 100644
--- a/llvm/test/Transforms/LoopStrengthReduce/AArch64/lsr-memcpy.ll
+++ b/llvm/test/Transforms/LoopStrengthReduce/AArch64/lsr-memcpy.ll
@@ -20,7 +20,7 @@
   %pDst.05 = phi i64* [ inttoptr (i64 6442450944 to i64*), %entry ], [ %incdec.ptr1, %while.body ]
   %pSrc.04 = phi i64* [ inttoptr (i64 4294967296 to i64*), %entry ], [ %incdec.ptr, %while.body ]
   %incdec.ptr = getelementptr inbounds i64, i64* %pSrc.04, i64 1
-  %tmp = load volatile i64* %pSrc.04, align 8
+  %tmp = load volatile i64, i64* %pSrc.04, align 8
   %incdec.ptr1 = getelementptr inbounds i64, i64* %pDst.05, i64 1
   store volatile i64 %tmp, i64* %pDst.05, align 8
   %sub = add i64 %len.06, -8