[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/lsa.ll b/llvm/test/CodeGen/PowerPC/lsa.ll
index 2811a0f..f4d61c0 100644
--- a/llvm/test/CodeGen/PowerPC/lsa.ll
+++ b/llvm/test/CodeGen/PowerPC/lsa.ll
@@ -17,9 +17,9 @@
   %arraydecay1 = getelementptr inbounds [8200 x i32], [8200 x i32]* %v, i64 0, i64 0
   %arraydecay2 = getelementptr inbounds [8200 x i32], [8200 x i32]* %w, i64 0, i64 0
   call void @bar(i32* %arraydecay, i32* %arraydecay1, i32* %arraydecay2) #0
-  %3 = load i32* %arraydecay2, align 4
+  %3 = load i32, i32* %arraydecay2, align 4
   %arrayidx3 = getelementptr inbounds [8200 x i32], [8200 x i32]* %w, i64 0, i64 1
-  %4 = load i32* %arrayidx3, align 4
+  %4 = load i32, i32* %arrayidx3, align 4
 
 ; CHECK: @foo
 ; CHECK-NOT: lwzx