[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/Inline/inline-fast-math-flags.ll b/llvm/test/Transforms/Inline/inline-fast-math-flags.ll
index 01074f5..e5ff8f7 100644
--- a/llvm/test/Transforms/Inline/inline-fast-math-flags.ll
+++ b/llvm/test/Transforms/Inline/inline-fast-math-flags.ll
@@ -8,15 +8,15 @@
 
 define float @foo(float* %a, float %b) {
 entry:
-  %a0 = load float* %a, align 4
+  %a0 = load float, float* %a, align 4
   %mul = fmul fast float %a0, %b
   %tobool = fcmp une float %mul, 0.000000e+00
   br i1 %tobool, label %if.then, label %if.end
 
 if.then:                                          ; preds = %entry
-  %a1 = load float* %a, align 8
+  %a1 = load float, float* %a, align 8
   %arrayidx1 = getelementptr inbounds float, float* %a, i64 1
-  %a2 = load float* %arrayidx1, align 4
+  %a2 = load float, float* %arrayidx1, align 4
   %add = fadd fast float %a1, %a2
   br label %if.end