[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/R600/fmin_legacy.f64.ll b/llvm/test/CodeGen/R600/fmin_legacy.f64.ll
index 395d927..e19a48f 100644
--- a/llvm/test/CodeGen/R600/fmin_legacy.f64.ll
+++ b/llvm/test/CodeGen/R600/fmin_legacy.f64.ll
@@ -19,8 +19,8 @@
   %gep.0 = getelementptr double, double addrspace(1)* %in, i32 %tid
   %gep.1 = getelementptr double, double addrspace(1)* %gep.0, i32 1
 
-  %a = load double addrspace(1)* %gep.0, align 8
-  %b = load double addrspace(1)* %gep.1, align 8
+  %a = load double, double addrspace(1)* %gep.0, align 8
+  %b = load double, double addrspace(1)* %gep.1, align 8
 
   %cmp = fcmp ule double %a, %b
   %val = select i1 %cmp, double %a, double %b
@@ -34,8 +34,8 @@
   %gep.0 = getelementptr double, double addrspace(1)* %in, i32 %tid
   %gep.1 = getelementptr double, double addrspace(1)* %gep.0, i32 1
 
-  %a = load double addrspace(1)* %gep.0, align 8
-  %b = load double addrspace(1)* %gep.1, align 8
+  %a = load double, double addrspace(1)* %gep.0, align 8
+  %b = load double, double addrspace(1)* %gep.1, align 8
 
   %cmp = fcmp ole double %a, %b
   %val = select i1 %cmp, double %a, double %b
@@ -49,8 +49,8 @@
   %gep.0 = getelementptr double, double addrspace(1)* %in, i32 %tid
   %gep.1 = getelementptr double, double addrspace(1)* %gep.0, i32 1
 
-  %a = load double addrspace(1)* %gep.0, align 8
-  %b = load double addrspace(1)* %gep.1, align 8
+  %a = load double, double addrspace(1)* %gep.0, align 8
+  %b = load double, double addrspace(1)* %gep.1, align 8
 
   %cmp = fcmp olt double %a, %b
   %val = select i1 %cmp, double %a, double %b
@@ -64,8 +64,8 @@
   %gep.0 = getelementptr double, double addrspace(1)* %in, i32 %tid
   %gep.1 = getelementptr double, double addrspace(1)* %gep.0, i32 1
 
-  %a = load double addrspace(1)* %gep.0, align 8
-  %b = load double addrspace(1)* %gep.1, align 8
+  %a = load double, double addrspace(1)* %gep.0, align 8
+  %b = load double, double addrspace(1)* %gep.1, align 8
 
   %cmp = fcmp ult double %a, %b
   %val = select i1 %cmp, double %a, double %b