[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/Analysis/ScalarEvolution/nsw-offset.ll b/llvm/test/Analysis/ScalarEvolution/nsw-offset.ll
index 7b8de51..127bb19 100644
--- a/llvm/test/Analysis/ScalarEvolution/nsw-offset.ll
+++ b/llvm/test/Analysis/ScalarEvolution/nsw-offset.ll
@@ -26,10 +26,10 @@
 ; CHECK: -->  {%d,+,16}<nsw><%bb>
   %2 = getelementptr inbounds double, double* %d, i64 %1  ; <double*> [#uses=1]
 
-  %3 = load double* %2, align 8                   ; <double> [#uses=1]
+  %3 = load double, double* %2, align 8                   ; <double> [#uses=1]
   %4 = sext i32 %i.01 to i64                      ; <i64> [#uses=1]
   %5 = getelementptr inbounds double, double* %q, i64 %4  ; <double*> [#uses=1]
-  %6 = load double* %5, align 8                   ; <double> [#uses=1]
+  %6 = load double, double* %5, align 8                   ; <double> [#uses=1]
   %7 = or i32 %i.01, 1                            ; <i32> [#uses=1]
 
 ; CHECK: %8 = sext i32 %7 to i64
@@ -52,7 +52,7 @@
 ; CHECK: {(8 + %q),+,16}<nsw><%bb>
   %t9 = getelementptr inbounds double, double* %q, i64 %t8  ; <double*> [#uses=1]
 
-  %10 = load double* %9, align 8                  ; <double> [#uses=1]
+  %10 = load double, double* %9, align 8                  ; <double> [#uses=1]
   %11 = fadd double %6, %10                       ; <double> [#uses=1]
   %12 = fadd double %11, 3.200000e+00             ; <double> [#uses=1]
   %13 = fmul double %3, %12                       ; <double> [#uses=1]