[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/InstCombine/obfuscated_splat.ll b/llvm/test/Transforms/InstCombine/obfuscated_splat.ll
index fa9cb42..c37456c 100644
--- a/llvm/test/Transforms/InstCombine/obfuscated_splat.ll
+++ b/llvm/test/Transforms/InstCombine/obfuscated_splat.ll
@@ -1,7 +1,7 @@
 ; RUN: opt -instcombine -S < %s | FileCheck %s
 
 define void @test(<4 x float> *%in_ptr, <4 x float> *%out_ptr) {
-  %A = load <4 x float>* %in_ptr, align 16
+  %A = load <4 x float>, <4 x float>* %in_ptr, align 16
   %B = shufflevector <4 x float> %A, <4 x float> undef, <4 x i32> <i32 0, i32 0, i32 undef, i32 undef>
   %C = shufflevector <4 x float> %B, <4 x float> %A, <4 x i32> <i32 0, i32 1, i32 4, i32 undef>
   %D = shufflevector <4 x float> %C, <4 x float> %A, <4 x i32> <i32 0, i32 1, i32 2, i32 4>