[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/LoopVectorize/if-conversion.ll b/llvm/test/Transforms/LoopVectorize/if-conversion.ll
index 7a3d825..3a6ac8b 100644
--- a/llvm/test/Transforms/LoopVectorize/if-conversion.ll
+++ b/llvm/test/Transforms/LoopVectorize/if-conversion.ll
@@ -36,9 +36,9 @@
 for.body:
   %indvars.iv = phi i64 [ %0, %for.body.lr.ph ], [ %indvars.iv.next, %if.end ]
   %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
-  %1 = load i32* %arrayidx, align 4
+  %1 = load i32, i32* %arrayidx, align 4
   %arrayidx4 = getelementptr inbounds i32, i32* %b, i64 %indvars.iv
-  %2 = load i32* %arrayidx4, align 4
+  %2 = load i32, i32* %arrayidx4, align 4
   %cmp5 = icmp sgt i32 %1, %2
   br i1 %cmp5, label %if.then, label %if.end
 
@@ -85,7 +85,7 @@
   %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
   %sum.011 = phi i32 [ %sum.1, %for.inc ], [ 0, %entry ]
   %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
-  %0 = load i32* %arrayidx, align 4
+  %0 = load i32, i32* %arrayidx, align 4
   %cmp1 = icmp sgt i32 %0, 30
   br i1 %cmp1, label %if.then, label %for.inc