[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/split-index-tc.ll b/llvm/test/CodeGen/PowerPC/split-index-tc.ll
index 1b27be7..38be93f 100644
--- a/llvm/test/CodeGen/PowerPC/split-index-tc.ll
+++ b/llvm/test/CodeGen/PowerPC/split-index-tc.ll
@@ -13,7 +13,7 @@
 ; CHECK-NOT: lhzu
 
 entry:
-  %0 = load %"class.llvm::MachineOperand"** undef, align 8
+  %0 = load %"class.llvm::MachineOperand"*, %"class.llvm::MachineOperand"** undef, align 8
   br i1 undef, label %_ZNK4llvm14MachineOperand6getRegEv.exit, label %cond.false.i123
 
 cond.false.i123:                                  ; preds = %_ZN4llvm12MachineInstr10getOperandEj.exit
@@ -22,7 +22,7 @@
 _ZNK4llvm14MachineOperand6getRegEv.exit:          ; preds = %_ZN4llvm12MachineInstr10getOperandEj.exit
   %IsDef.i = getelementptr inbounds %"class.llvm::MachineOperand", %"class.llvm::MachineOperand"* %0, i64 undef, i32 1
   %1 = bitcast [3 x i8]* %IsDef.i to i24*
-  %bf.load.i = load i24* %1, align 1
+  %bf.load.i = load i24, i24* %1, align 1
   %2 = and i24 %bf.load.i, 128
   br i1 undef, label %for.cond.cleanup, label %for.body.lr.ph
 
@@ -61,7 +61,7 @@
   unreachable
 
 _ZNK4llvm14MachineOperand6isDeadEv.exit262:       ; preds = %if.end55
-  %bf.load.i259 = load i24* %1, align 1
+  %bf.load.i259 = load i24, i24* %1, align 1
   br i1 undef, label %if.then57, label %if.else59
 
 if.then57:                                        ; preds = %_ZNK4llvm14MachineOperand6isDeadEv.exit262