[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/split-scalar-i64-add.ll b/llvm/test/CodeGen/R600/split-scalar-i64-add.ll
index 7826dd1..46409cd 100644
--- a/llvm/test/CodeGen/R600/split-scalar-i64-add.ll
+++ b/llvm/test/CodeGen/R600/split-scalar-i64-add.ll
@@ -38,7 +38,7 @@
 define void @imp_def_vcc_split_i64_add_2(i64 addrspace(1)* %out, i32 addrspace(1)* %in, i32 %val0, i64 %val1) {
   %tid = call i32 @llvm.r600.read.tidig.x() readnone
   %gep = getelementptr i32, i32 addrspace(1)* %in, i32 %tid
-  %load = load i32 addrspace(1)* %gep
+  %load = load i32, i32 addrspace(1)* %gep
   %vec.0 = insertelement <2 x i32> undef, i32 %val0, i32 0
   %vec.1 = insertelement <2 x i32> %vec.0, i32 %load, i32 1
   %bc = bitcast <2 x i32> %vec.1 to i64