[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/CodeGen/R600/fp_to_uint.ll b/llvm/test/CodeGen/R600/fp_to_uint.ll
index 804d90f..b7b6ccc 100644
--- a/llvm/test/CodeGen/R600/fp_to_uint.ll
+++ b/llvm/test/CodeGen/R600/fp_to_uint.ll
@@ -36,7 +36,7 @@
 ; SI: v_cvt_u32_f32_e32
 
 define void @fp_to_uint_v4f32_to_v4i32(<4 x i32> addrspace(1)* %out, <4 x float> addrspace(1)* %in) {
-  %value = load <4 x float> addrspace(1) * %in
+  %value = load <4 x float>, <4 x float> addrspace(1) * %in
   %result = fptoui <4 x float> %value to <4 x i32>
   store <4 x i32> %result, <4 x i32> addrspace(1)* %out
   ret void