[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/Analysis/BasicAA/aligned-overread.ll b/llvm/test/Analysis/BasicAA/aligned-overread.ll
index 47588e7..aa0a83e6 100644
--- a/llvm/test/Analysis/BasicAA/aligned-overread.ll
+++ b/llvm/test/Analysis/BasicAA/aligned-overread.ll
@@ -9,11 +9,11 @@
 
 define i32 @main() nounwind uwtable ssp {
 entry:
-  %tmp = load i8, i8* getelementptr inbounds ({ i8, i8, i8, i8, i8 }* @a, i64 0, i32 4), align 4
+  %tmp = load i8, i8* getelementptr inbounds ({ i8, i8, i8, i8, i8 }, { i8, i8, i8, i8, i8 }* @a, i64 0, i32 4), align 4
   %tmp1 = or i8 %tmp, -128
-  store i8 %tmp1, i8* getelementptr inbounds ({ i8, i8, i8, i8, i8 }* @a, i64 0, i32 4), align 4
+  store i8 %tmp1, i8* getelementptr inbounds ({ i8, i8, i8, i8, i8 }, { i8, i8, i8, i8, i8 }* @a, i64 0, i32 4), align 4
   %tmp2 = load i64, i64* bitcast ({ i8, i8, i8, i8, i8 }* @a to i64*), align 8
-  store i8 11, i8* getelementptr inbounds ({ i8, i8, i8, i8, i8 }* @a, i64 0, i32 4), align 4
+  store i8 11, i8* getelementptr inbounds ({ i8, i8, i8, i8, i8 }, { i8, i8, i8, i8, i8 }* @a, i64 0, i32 4), align 4
   %tmp3 = trunc i64 %tmp2 to i32
   ret i32 %tmp3