[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/ARM/2008-03-07-RegScavengerAssert.ll b/llvm/test/CodeGen/ARM/2008-03-07-RegScavengerAssert.ll
index 24e664c..5ee8b46 100644
--- a/llvm/test/CodeGen/ARM/2008-03-07-RegScavengerAssert.ll
+++ b/llvm/test/CodeGen/ARM/2008-03-07-RegScavengerAssert.ll
@@ -11,9 +11,9 @@
 bb88.i:		; preds = %bb74.i
 	br i1 false, label %mandel.exit, label %bb74.i
 mandel.exit:		; preds = %bb88.i
-	%tmp2 = load volatile double, double* getelementptr ({ double, double }* @accum, i32 0, i32 0), align 8		; <double> [#uses=1]
+	%tmp2 = load volatile double, double* getelementptr ({ double, double }, { double, double }* @accum, i32 0, i32 0), align 8		; <double> [#uses=1]
 	%tmp23 = fptosi double %tmp2 to i32		; <i32> [#uses=1]
-	%tmp5 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8]* @.str, i32 0, i32 0), i32 %tmp23 )		; <i32> [#uses=0]
+	%tmp5 = tail call i32 (i8*, ...)* @printf( i8* getelementptr ([4 x i8], [4 x i8]* @.str, i32 0, i32 0), i32 %tmp23 )		; <i32> [#uses=0]
 	ret i32 0
 }