[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/CodeGen/Mips/Fast-ISel/fpintconv.ll b/llvm/test/CodeGen/Mips/Fast-ISel/fpintconv.ll
index 5a2cd78..a94ef50 100644
--- a/llvm/test/CodeGen/Mips/Fast-ISel/fpintconv.ll
+++ b/llvm/test/CodeGen/Mips/Fast-ISel/fpintconv.ll
@@ -14,7 +14,7 @@
 define void @ifv() {
 entry:
 ; CHECK-LABEL:   .ent  ifv
-  %0 = load float* @f, align 4
+  %0 = load float, float* @f, align 4
   %conv = fptosi float %0 to i32
 ; CHECK:   trunc.w.s  $f[[REG:[0-9]+]], $f{{[0-9]+}}
 ; CHECK:   mfc1	${{[0-9]+}}, $f[[REG]]
@@ -26,7 +26,7 @@
 define void @idv() {
 entry:
 ; CHECK-LABEL:   .ent  idv
-  %0 = load double* @d, align 8
+  %0 = load double, double* @d, align 8
   %conv = fptosi double %0 to i32
 ; CHECK:   trunc.w.d  $f[[REG:[0-9]+]], $f{{[0-9]+}}
 ; CHECK:   mfc1	${{[0-9]+}}, $f[[REG]]