[opaque pointer type] Add textual IR support for explicit type parameter to gep operator

Similar to gep (r230786) and load (r230794) changes.

Similar migration script can be used to update test cases, which
successfully migrated all of LLVM and Polly, but about 4 test cases
needed manually changes in Clang.

(this script will read the contents of stdin and massage it into stdout
- wrap it in the 'apply.sh' script shown in previous commits + xargs to
apply it over a large set of test cases)

import fileinput
import sys
import re

rep = re.compile(r"(getelementptr(?:\s+inbounds)?\s*\()((<\d*\s+x\s+)?([^@]*?)(|\s*addrspace\(\d+\))\s*\*(?(3)>)\s*)(?=$|%|@|null|undef|blockaddress|getelementptr|addrspacecast|bitcast|inttoptr|zeroinitializer|<|\[\[[a-zA-Z]|\{\{)", re.MULTILINE | re.DOTALL)

def conv(match):
  line = match.group(1)
  line += match.group(4)
  line += ", "
  line += match.group(2)
  return line

line = sys.stdin.read()
off = 0
for match in re.finditer(rep, line):
  sys.stdout.write(line[off:match.start()])
  sys.stdout.write(conv(match))
  off = match.end()
sys.stdout.write(line[off:])

llvm-svn: 232184
diff --git a/llvm/test/CodeGen/PowerPC/2013-07-01-PHIElimBug.ll b/llvm/test/CodeGen/PowerPC/2013-07-01-PHIElimBug.ll
index f63a693..3c6f3ff 100644
--- a/llvm/test/CodeGen/PowerPC/2013-07-01-PHIElimBug.ll
+++ b/llvm/test/CodeGen/PowerPC/2013-07-01-PHIElimBug.ll
@@ -14,13 +14,13 @@
   br i1 undef, label %for.cond940, label %if.end1018
 
 for.cond940:                                      ; preds = %for.cond940, %if.else876
-  %l_655.1 = phi i32* [ getelementptr inbounds ([8 x i32]* @g_51, i64 0, i64 6), %entry ], [ %l_654.0, %for.cond940 ]
+  %l_655.1 = phi i32* [ getelementptr inbounds ([8 x i32], [8 x i32]* @g_51, i64 0, i64 6), %entry ], [ %l_654.0, %for.cond940 ]
   %l_654.0 = phi i32* [ null, %entry ], [ %arrayidx638, %for.cond940 ]
   %exitcond = icmp eq i32 undef, 20
   br i1 %exitcond, label %if.end1018, label %for.cond940
 
 if.end1018:                                       ; preds = %for.end957, %for.end834
-  %l_655.3.ph33 = phi i32* [ %l_655.1, %for.cond940 ], [ getelementptr inbounds ([8 x i32]* @g_51, i64 0, i64 6), %entry ]
+  %l_655.3.ph33 = phi i32* [ %l_655.1, %for.cond940 ], [ getelementptr inbounds ([8 x i32], [8 x i32]* @g_51, i64 0, i64 6), %entry ]
   store i32 0, i32* %l_655.3.ph33, align 4
   ret void
 }