[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/PowerPC/code-align.ll b/llvm/test/CodeGen/PowerPC/code-align.ll
index 6b743e9..19d1b23 100644
--- a/llvm/test/CodeGen/PowerPC/code-align.ll
+++ b/llvm/test/CodeGen/PowerPC/code-align.ll
@@ -56,8 +56,8 @@
   %induction45 = or i64 %index, 1
   %0 = getelementptr inbounds i32, i32* %a, i64 %index
   %1 = getelementptr inbounds i32, i32* %a, i64 %induction45
-  %2 = load i32* %0, align 4
-  %3 = load i32* %1, align 4
+  %2 = load i32, i32* %0, align 4
+  %3 = load i32, i32* %1, align 4
   %4 = add nsw i32 %2, 4
   %5 = add nsw i32 %3, 4
   %6 = mul nsw i32 %4, 3
@@ -93,7 +93,7 @@
 for.body:                                         ; preds = %for.body, %entry
   %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
   %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
-  %0 = load i32* %arrayidx, align 4
+  %0 = load i32, i32* %arrayidx, align 4
   %add = add nsw i32 %0, 4
   %mul = mul nsw i32 %add, 3
   store i32 %mul, i32* %arrayidx, align 4