[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/Transforms/Inline/ptr-diff.ll b/llvm/test/Transforms/Inline/ptr-diff.ll
index 8388e4f..728f379 100644
--- a/llvm/test/Transforms/Inline/ptr-diff.ll
+++ b/llvm/test/Transforms/Inline/ptr-diff.ll
@@ -25,7 +25,7 @@
   ret i32 3
 
 else:
-  %t = load i32* %begin
+  %t = load i32, i32* %begin
   ret i32 %t
 }
 
@@ -53,7 +53,7 @@
   ret i32 3
 
 else:
-  %t = load i32* %begin
+  %t = load i32, i32* %begin
   ret i32 %t
 }
 
@@ -63,9 +63,9 @@
   %p1 = inttoptr i32 %a to i32 addrspace(1)*
   %p2 = inttoptr i32 %b to i32 addrspace(1)*
   %p3 = inttoptr i32 %c to i32 addrspace(1)*
-  %t1 = load i32 addrspace(1)* %p1
-  %t2 = load i32 addrspace(1)* %p2
-  %t3 = load i32 addrspace(1)* %p3
+  %t1 = load i32, i32 addrspace(1)* %p1
+  %t2 = load i32, i32 addrspace(1)* %p2
+  %t3 = load i32, i32 addrspace(1)* %p3
   %s = add i32 %t1, %t2
   %s1 = add i32 %s, %t3
   ret i32 %s1
@@ -84,9 +84,9 @@
   %p1 = inttoptr i32 %a to i32 addrspace(2)*
   %p2 = inttoptr i32 %b to i32 addrspace(2)*
   %p3 = inttoptr i32 %c to i32 addrspace(2)*
-  %t1 = load i32 addrspace(2)* %p1
-  %t2 = load i32 addrspace(2)* %p2
-  %t3 = load i32 addrspace(2)* %p3
+  %t1 = load i32, i32 addrspace(2)* %p1
+  %t2 = load i32, i32 addrspace(2)* %p2
+  %t3 = load i32, i32 addrspace(2)* %p3
   %s = add i32 %t1, %t2
   %s1 = add i32 %s, %t3
   ret i32 %s1