[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/uglygep.ll b/llvm/test/Transforms/LoopStrengthReduce/uglygep.ll
index b1d9d69..430127b 100644
--- a/llvm/test/Transforms/LoopStrengthReduce/uglygep.ll
+++ b/llvm/test/Transforms/LoopStrengthReduce/uglygep.ll
@@ -33,7 +33,7 @@
 
 ; CHECK: bb14:
 ; CHECK-NEXT: store i8 undef, i8* [[SCEVGEP]]
-; CHECK-NEXT: %t6 = load float** undef
+; CHECK-NEXT: %t6 = load float*, float** undef
 ; Fold %t3's add within the address.
 ; CHECK-NEXT: [[SCEVGEP1:%[^ ]+]] = getelementptr float, float* %t6, i64 4
 ; CHECK-NEXT: [[SCEVGEP2:%[^ ]+]] = bitcast float* [[SCEVGEP1]] to i8*
@@ -44,7 +44,7 @@
 bb14:                                             ; preds = %bb14, %bb10
   %t2 = getelementptr inbounds i8, i8* undef, i64 %t4 ; <i8*> [#uses=1]
   store i8 undef, i8* %t2
-  %t6 = load float** undef
+  %t6 = load float*, float** undef
   %t8 = bitcast float* %t6 to i8*              ; <i8*> [#uses=1]
   %t9 = getelementptr inbounds i8, i8* %t8, i64 %t3 ; <i8*> [#uses=1]
   store i8 undef, i8* %t9