[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/LoopStrengthReduce/ARM/2012-06-15-lsr-noaddrmode.ll b/llvm/test/Transforms/LoopStrengthReduce/ARM/2012-06-15-lsr-noaddrmode.ll
index bc654d3..56ff69c 100644
--- a/llvm/test/Transforms/LoopStrengthReduce/ARM/2012-06-15-lsr-noaddrmode.ll
+++ b/llvm/test/Transforms/LoopStrengthReduce/ARM/2012-06-15-lsr-noaddrmode.ll
@@ -50,7 +50,7 @@
 ; CHECK: ldr{{.*}}lsl #2
 define i32 @main() nounwind ssp {
 entry:
-  %v0 = load i32* @ncol, align 4
+  %v0 = load i32, i32* @ncol, align 4
   %v1 = tail call i32* @getptr() nounwind
   %cmp10.i = icmp eq i32 %v0, 0
   br label %while.cond.outer
@@ -64,12 +64,12 @@
   br label %while.body
 
 while.body:
-  %v3 = load i32* @ncol, align 4
+  %v3 = load i32, i32* @ncol, align 4
   br label %end_of_chain
 
 end_of_chain:
   %state.i = getelementptr inbounds %s, %s* %call18, i32 0, i32 0
-  %v4 = load i32** %state.i, align 4
+  %v4 = load i32*, i32** %state.i, align 4
   br label %while.cond.i.i
 
 while.cond.i.i:
@@ -80,9 +80,9 @@
 
 land.rhs.i.i:
   %arrayidx.i.i = getelementptr inbounds i32, i32* %v4, i32 %dec.i.i
-  %v5 = load i32* %arrayidx.i.i, align 4
+  %v5 = load i32, i32* %arrayidx.i.i, align 4
   %arrayidx1.i.i = getelementptr inbounds i32, i32* %v1, i32 %dec.i.i
-  %v6 = load i32* %arrayidx1.i.i, align 4
+  %v6 = load i32, i32* %arrayidx1.i.i, align 4
   %cmp.i.i = icmp eq i32 %v5, %v6
   br i1 %cmp.i.i, label %while.cond.i.i, label %equal_data.exit.i