[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/SCCP/apint-load.ll b/llvm/test/Transforms/SCCP/apint-load.ll
index 407237b..17506fc 100644
--- a/llvm/test/Transforms/SCCP/apint-load.ll
+++ b/llvm/test/Transforms/SCCP/apint-load.ll
@@ -7,19 +7,19 @@
 @Y = constant [2 x { i212, float }] [ { i212, float } { i212 12, float 1.0 }, 
                                      { i212, float } { i212 37, float 0x3FF3B2FEC0000000 } ]
 define i212 @test1() {
-	%B = load i212* @X
+	%B = load i212, i212* @X
 	ret i212 %B
 }
 
 define internal float @test2() {
 	%A = getelementptr [2 x { i212, float}], [2 x { i212, float}]* @Y, i32 0, i32 1, i32 1
-	%B = load float* %A
+	%B = load float, float* %A
 	ret float %B
 }
 
 define internal i212 @test3() {
 	%A = getelementptr [2 x { i212, float}], [2 x { i212, float}]* @Y, i32 0, i32 0, i32 0
-	%B = load i212* %A
+	%B = load i212, i212* %A
 	ret i212 %B
 }