[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/Reassociate/crash.ll b/llvm/test/Transforms/Reassociate/crash.ll
index 770f973..f8774ea 100644
--- a/llvm/test/Transforms/Reassociate/crash.ll
+++ b/llvm/test/Transforms/Reassociate/crash.ll
@@ -17,7 +17,7 @@
 ; PR5981
 define i32 @test2() nounwind ssp {
 entry:
-  %0 = load i32* undef, align 4
+  %0 = load i32, i32* undef, align 4
   %1 = mul nsw i32 undef, %0
   %2 = mul nsw i32 undef, %0
   %3 = add nsw i32 undef, %1
@@ -50,7 +50,7 @@
   br label %_33
 
 _33:                                              ; preds = %_33, %_
-  %tmp348 = load i8* %arg, align 1
+  %tmp348 = load i8, i8* %arg, align 1
   %tmp349 = lshr i8 %tmp348, 7
   %tmp350 = or i8 %tmp349, 42
   %tmp351 = add i8 %tmp350, -42
@@ -123,7 +123,7 @@
 ; PR12963
 @a = external global i8
 define i8 @f0(i8 %x) {
-  %t0 = load i8* @a
+  %t0 = load i8, i8* @a
   %t1 = mul i8 %x, %x
   %t2 = mul i8 %t1, %t1
   %t3 = mul i8 %t2, %t2