[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/ifcvt-neon.ll b/llvm/test/CodeGen/Thumb2/ifcvt-neon.ll
index 00f3399..83c0b60 100644
--- a/llvm/test/CodeGen/Thumb2/ifcvt-neon.ll
+++ b/llvm/test/CodeGen/Thumb2/ifcvt-neon.ll
@@ -7,8 +7,8 @@
 define float @t(i32 %c) nounwind {
 entry:
   %0 = icmp sgt i32 %c, 1                         ; <i1> [#uses=1]
-  %1 = load float* @a, align 4                    ; <float> [#uses=2]
-  %2 = load float* @b, align 4                    ; <float> [#uses=2]
+  %1 = load float, float* @a, align 4                    ; <float> [#uses=2]
+  %2 = load float, float* @b, align 4                    ; <float> [#uses=2]
   br i1 %0, label %bb, label %bb1
 
 bb:                                               ; preds = %entry