[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/ARM/atomic-load-store.ll b/llvm/test/CodeGen/ARM/atomic-load-store.ll
index af13dfc..5db8178 100644
--- a/llvm/test/CodeGen/ARM/atomic-load-store.ll
+++ b/llvm/test/CodeGen/ARM/atomic-load-store.ll
@@ -44,7 +44,7 @@
 ; THUMBM-LABEL: test2
 ; THUMBM: ldr
 ; THUMBM: dmb sy
-  %val = load atomic i32* %ptr seq_cst, align 4
+  %val = load atomic i32, i32* %ptr seq_cst, align 4
   ret i32 %val
 }
 
@@ -76,7 +76,7 @@
 ; ARMV6-NOT: mcr
 ; THUMBM-LABEL: test3
 ; THUMBM-NOT: dmb sy
-  %val = load atomic i8* %ptr1 unordered, align 1
+  %val = load atomic i8, i8* %ptr1 unordered, align 1
   store atomic i8 %val, i8* %ptr2 unordered, align 1
   ret void
 }
@@ -87,7 +87,7 @@
 ; THUMBONE: ___sync_lock_test_and_set_1
 ; ARMV6-LABEL: test4
 ; THUMBM-LABEL: test4
-  %val = load atomic i8* %ptr1 seq_cst, align 1
+  %val = load atomic i8, i8* %ptr1 seq_cst, align 1
   store atomic i8 %val, i8* %ptr2 seq_cst, align 1
   ret void
 }
@@ -95,7 +95,7 @@
 define i64 @test_old_load_64bit(i64* %p) {
 ; ARMV4-LABEL: test_old_load_64bit
 ; ARMV4: ___sync_val_compare_and_swap_8
-  %1 = load atomic i64* %p seq_cst, align 8
+  %1 = load atomic i64, i64* %p seq_cst, align 8
   ret i64 %1
 }