[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/SPARC/spillsize.ll b/llvm/test/CodeGen/SPARC/spillsize.ll
index 2fcab54..a82e509 100644
--- a/llvm/test/CodeGen/SPARC/spillsize.ll
+++ b/llvm/test/CodeGen/SPARC/spillsize.ll
@@ -11,13 +11,13 @@
 ; CHECK: ldx [%fp+
 define void @spill4(i64* nocapture %p) {
 entry:
-  %val0 = load i64* %p
+  %val0 = load i64, i64* %p
   %cmp0 = icmp ult i64 %val0, 385672958347594845
   %cm80 = zext i1 %cmp0 to i64
   store i64 %cm80, i64* %p, align 8
   tail call void asm sideeffect "", "~{i0},~{i1},~{i2},~{i3},~{i4},~{i5},~{g2},~{g3},~{g4},~{g5},~{l0},~{l1},~{l2},~{l3},~{l4},~{l5},~{l6},~{l7},~{o0},~{o1},~{o2},~{o3},~{o4},~{o5},~{o7}"()
   %arrayidx1 = getelementptr inbounds i64, i64* %p, i64 1
-  %val = load i64* %arrayidx1
+  %val = load i64, i64* %arrayidx1
   %cmp = icmp ult i64 %val, 385672958347594845
   %cm8 = select i1 %cmp, i64 10, i64 20
   store i64 %cm8, i64* %arrayidx1, align 8