[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/IndVarSimplify/udiv.ll b/llvm/test/Transforms/IndVarSimplify/udiv.ll
index 1925e86..04458ff 100644
--- a/llvm/test/Transforms/IndVarSimplify/udiv.ll
+++ b/llvm/test/Transforms/IndVarSimplify/udiv.ll
@@ -18,7 +18,7 @@
 
 cond.true:                                        ; preds = %entry
   %arrayidx = getelementptr inbounds i8*, i8** %argv, i64 1 ; <i8**> [#uses=1]
-  %tmp2 = load i8** %arrayidx                     ; <i8*> [#uses=1]
+  %tmp2 = load i8*, i8** %arrayidx                     ; <i8*> [#uses=1]
   %call = tail call i32 @atoi(i8* %tmp2) nounwind readonly ; <i32> [#uses=1]
   br label %while.cond.preheader
 
@@ -82,7 +82,7 @@
   %count.212 = phi i32 [ 0, %bb.nph16 ], [ %count.1, %for.cond12 ] ; <i32> [#uses=2]
   %i.17 = phi i64 [ 2, %bb.nph16 ], [ %inc37, %for.cond12 ] ; <i64> [#uses=4]
   %arrayidx17 = getelementptr inbounds [8193 x i8], [8193 x i8]* @main.flags, i64 0, i64 %i.17 ; <i8*> [#uses=1]
-  %tmp18 = load i8* %arrayidx17                   ; <i8> [#uses=1]
+  %tmp18 = load i8, i8* %arrayidx17                   ; <i8> [#uses=1]
   %tobool19 = icmp eq i8 %tmp18, 0                ; <i1> [#uses=1]
   br i1 %tobool19, label %for.inc35, label %if.then