[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/PowerPC/2007-10-18-PtrArithmetic.ll b/llvm/test/CodeGen/PowerPC/2007-10-18-PtrArithmetic.ll
index 84fadd1..07b1f8d 100644
--- a/llvm/test/CodeGen/PowerPC/2007-10-18-PtrArithmetic.ll
+++ b/llvm/test/CodeGen/PowerPC/2007-10-18-PtrArithmetic.ll
@@ -10,9 +10,9 @@
 cond_true:		; preds = %entry
 	%tmp89 = bitcast float* %res to <4 x i32>*		; <<4 x i32>*> [#uses=1]
 	%tmp1011 = bitcast float* %argA to <4 x i32>*		; <<4 x i32>*> [#uses=1]
-	%tmp14 = load <4 x i32>* %tmp1011, align 16		; <<4 x i32>> [#uses=1]
+	%tmp14 = load <4 x i32>, <4 x i32>* %tmp1011, align 16		; <<4 x i32>> [#uses=1]
 	%tmp1516 = bitcast float* %argB to <4 x i32>*		; <<4 x i32>*> [#uses=1]
-	%tmp18 = load <4 x i32>* %tmp1516, align 16		; <<4 x i32>> [#uses=1]
+	%tmp18 = load <4 x i32>, <4 x i32>* %tmp1516, align 16		; <<4 x i32>> [#uses=1]
 	%tmp19 = sdiv <4 x i32> %tmp14, %tmp18		; <<4 x i32>> [#uses=1]
 	store <4 x i32> %tmp19, <4 x i32>* %tmp89, align 16
 	ret void