[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/Feature/packed_struct.ll b/llvm/test/Feature/packed_struct.ll
index 0766649..5909f99 100644
--- a/llvm/test/Feature/packed_struct.ll
+++ b/llvm/test/Feature/packed_struct.ll
@@ -16,9 +16,9 @@
 
 define i32 @main() 
 {
-        %tmp = load i32*  getelementptr (%struct.anon* @foos, i32 0, i32 1)            ; <i32> [#uses=1]
-        %tmp3 = load i32* getelementptr (%struct.anon* @foos, i32 0, i32 2)            ; <i32> [#uses=1]
-        %tmp6 = load i32* getelementptr (%struct.anon* @foos, i32 0, i32 3)            ; <i32> [#uses=1]
+        %tmp = load i32, i32*  getelementptr (%struct.anon* @foos, i32 0, i32 1)            ; <i32> [#uses=1]
+        %tmp3 = load i32, i32* getelementptr (%struct.anon* @foos, i32 0, i32 2)            ; <i32> [#uses=1]
+        %tmp6 = load i32, i32* getelementptr (%struct.anon* @foos, i32 0, i32 3)            ; <i32> [#uses=1]
         %tmp4 = add i32 %tmp3, %tmp             ; <i32> [#uses=1]
         %tmp7 = add i32 %tmp4, %tmp6            ; <i32> [#uses=1]
         ret i32 %tmp7
@@ -26,8 +26,8 @@
 
 define i32 @bar() {
 entry:
-        %tmp = load i32* getelementptr([2 x <{ i32, i8 }>]* @bara, i32 0, i32 0, i32 0 )            ; <i32> [#uses=1]
-        %tmp4 = load i32* getelementptr ([2 x <{ i32, i8 }>]* @bara, i32 0, i32 1, i32 0)           ; <i32> [#uses=1]
+        %tmp = load i32, i32* getelementptr([2 x <{ i32, i8 }>]* @bara, i32 0, i32 0, i32 0 )            ; <i32> [#uses=1]
+        %tmp4 = load i32, i32* getelementptr ([2 x <{ i32, i8 }>]* @bara, i32 0, i32 1, i32 0)           ; <i32> [#uses=1]
         %tmp5 = add i32 %tmp4, %tmp             ; <i32> [#uses=1]
         ret i32 %tmp5
 }