[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/2008-02-05-LiveIntervalsAssert.ll b/llvm/test/CodeGen/PowerPC/2008-02-05-LiveIntervalsAssert.ll
index 791e9e6..7ed7b9b 100644
--- a/llvm/test/CodeGen/PowerPC/2008-02-05-LiveIntervalsAssert.ll
+++ b/llvm/test/CodeGen/PowerPC/2008-02-05-LiveIntervalsAssert.ll
@@ -44,7 +44,7 @@
 
 bb113:		; preds = %bb113, %bb93, %bb82, %bb52, %entry
 	%fingerprint_addr.0.reg2mem.9 = phi i64 [ 0, %entry ], [ 0, %bb52 ], [ 0, %bb82 ], [ 0, %bb93 ], [ %tmp118, %bb113 ]		; <i64> [#uses=1]
-	tail call void @_Z28report_should_not_reach_herePKci( i8* getelementptr ([44 x i8]* @.str, i32 0, i32 0), i32 817 ) nounwind 
+	tail call void @_Z28report_should_not_reach_herePKci( i8* getelementptr ([44 x i8], [44 x i8]* @.str, i32 0, i32 0), i32 817 ) nounwind 
 	%tmp118 = lshr i64 %fingerprint_addr.0.reg2mem.9, 4		; <i64> [#uses=2]
 	%tmp21158 = and i64 %tmp118, 15		; <i64> [#uses=1]
 	switch i64 %tmp21158, label %bb113 [