[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/SimplifyCFG/phi-undef-loadstore.ll b/llvm/test/Transforms/SimplifyCFG/phi-undef-loadstore.ll
index ad73f14..c0f0046a 100644
--- a/llvm/test/Transforms/SimplifyCFG/phi-undef-loadstore.ll
+++ b/llvm/test/Transforms/SimplifyCFG/phi-undef-loadstore.ll
@@ -21,7 +21,7 @@
 
 if.end7:                                          ; preds = %if.else, %if.then4, %if.then
   %x.0 = phi i32* [ %a, %if.then ], [ %c, %if.then4 ], [ null, %if.else ]
-  %tmp9 = load i32* %x.0
+  %tmp9 = load i32, i32* %x.0
   ret i32 %tmp9
 
 ; CHECK-LABEL: @test1(
@@ -50,7 +50,7 @@
 
 if.end7:                                          ; preds = %if.else, %if.then4, %if.then
   %x.0 = phi i32* [ %a, %if.then ], [ null, %if.then4 ], [ null, %if.else ]
-  %tmp9 = load i32* %x.0
+  %tmp9 = load i32, i32* %x.0
   ret i32 %tmp9
 ; CHECK-LABEL: @test2(
 ; CHECK: if.else:
@@ -79,7 +79,7 @@
 if.end7:                                          ; preds = %if.else, %if.then4, %if.then
   %x.0 = phi i32* [ %a, %if.then ], [ null, %if.then4 ], [ null, %if.else ]
   tail call void @bar() nounwind
-  %tmp9 = load i32* %x.0
+  %tmp9 = load i32, i32* %x.0
   ret i32 %tmp9
 ; CHECK-LABEL: @test3(
 ; CHECK: if.end7:
@@ -106,7 +106,7 @@
 if.end7:                                          ; preds = %if.else, %if.then4, %if.then
   %x.0 = phi i32* [ %a, %if.then ], [ null, %if.then4 ], [ null, %if.else ]
   %gep = getelementptr i32, i32* %x.0, i32 10
-  %tmp9 = load i32* %gep
+  %tmp9 = load i32, i32* %gep
   %tmp10 = or i32 %tmp9, 1
   store i32 %tmp10, i32* %gep
   ret i32 %tmp9