[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/SystemZ/branch-03.ll b/llvm/test/CodeGen/SystemZ/branch-03.ll
index ef31a9c..a258e85 100644
--- a/llvm/test/CodeGen/SystemZ/branch-03.ll
+++ b/llvm/test/CodeGen/SystemZ/branch-03.ll
@@ -10,7 +10,7 @@
 ; CHECK-NEXT: jle .L[[LABEL]]
   br label %loop
 loop:
-  %val = load volatile i32 *%src
+  %val = load volatile i32 , i32 *%src
   %cond = icmp ule i32 %target, %val
   br i1 %cond, label %loop, label %exit
 exit:
@@ -25,7 +25,7 @@
 ; CHECK-NEXT: jl .L[[LABEL]]
   br label %loop
 loop:
-  %val = load volatile i32 *%src
+  %val = load volatile i32 , i32 *%src
   %cond = icmp ult i32 %target, %val
   br i1 %cond, label %loop, label %exit
 exit:
@@ -40,7 +40,7 @@
 ; CHECK-NEXT: jh .L[[LABEL]]
   br label %loop
 loop:
-  %val = load volatile i32 *%src
+  %val = load volatile i32 , i32 *%src
   %cond = icmp ugt i32 %target, %val
   br i1 %cond, label %loop, label %exit
 exit:
@@ -55,7 +55,7 @@
 ; CHECK-NEXT: jhe .L[[LABEL]]
   br label %loop
 loop:
-  %val = load volatile i32 *%src
+  %val = load volatile i32 , i32 *%src
   %cond = icmp uge i32 %target, %val
   br i1 %cond, label %loop, label %exit
 exit: