[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/Reassociate/fast-basictest.ll b/llvm/test/Transforms/Reassociate/fast-basictest.ll
index 67b07f4..64b74e3 100644
--- a/llvm/test/Transforms/Reassociate/fast-basictest.ll
+++ b/llvm/test/Transforms/Reassociate/fast-basictest.ll
@@ -48,9 +48,9 @@
 ; CHECK-NOT: fadd fast float
 ; CHECK: ret void
 
-  %A = load float* @fa
-  %B = load float* @fb
-  %C = load float* @fc
+  %A = load float, float* @fa
+  %B = load float, float* @fb
+  %C = load float, float* @fc
   %t1 = fadd fast float %A, %B
   %t2 = fadd fast float %t1, %C
   %t3 = fadd fast float %C, %A
@@ -69,9 +69,9 @@
 ; CHECK-NOT: fadd
 ; CHECK: ret void
 
-  %A = load float* @fa
-  %B = load float* @fb
-  %C = load float* @fc
+  %A = load float, float* @fa
+  %B = load float, float* @fb
+  %C = load float, float* @fc
   %t1 = fadd fast float %A, %B
   %t2 = fadd fast float %t1, %C
   %t3 = fadd fast float %C, %A
@@ -90,9 +90,9 @@
 ; CHECK-NOT: fadd
 ; CHECK: ret void
 
-  %A = load float* @fa
-  %B = load float* @fb
-  %C = load float* @fc
+  %A = load float, float* @fa
+  %B = load float, float* @fb
+  %C = load float, float* @fc
   %t1 = fadd fast float %B, %A
   %t2 = fadd fast float %t1, %C
   %t3 = fadd fast float %C, %A