[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/X86/cas.ll b/llvm/test/CodeGen/X86/cas.ll
index ec519c6..7807bb9 100644
--- a/llvm/test/CodeGen/X86/cas.ll
+++ b/llvm/test/CodeGen/X86/cas.ll
@@ -24,14 +24,14 @@
   store float* %p, float** %p.addr, align 8
   store float* %expected, float** %expected.addr, align 8
   store float %desired, float* %desired.addr, align 4
-  %0 = load float** %expected.addr, align 8
-  %1 = load float** %expected.addr, align 8
-  %2 = load float* %1, align 4
-  %3 = load float* %desired.addr, align 4
-  %4 = load float** %p.addr, align 8
+  %0 = load float*, float** %expected.addr, align 8
+  %1 = load float*, float** %expected.addr, align 8
+  %2 = load float, float* %1, align 4
+  %3 = load float, float* %desired.addr, align 4
+  %4 = load float*, float** %p.addr, align 8
   %5 = call i8 asm sideeffect "lock; cmpxchg $3, $4; mov $2, $1; sete $0", "={ax},=*rm,{ax},q,*m,~{memory},~{cc},~{dirflag},~{fpsr},~{flags}"(float* %0, float %2, float %3, float* %4) nounwind
   store i8 %5, i8* %success, align 1
-  %6 = load i8* %success, align 1
+  %6 = load i8, i8* %success, align 1
   %tobool = trunc i8 %6 to i1
   ret i1 %tobool
 }
@@ -52,16 +52,16 @@
   store i8* %expected, i8** %expected.addr, align 8
   %frombool = zext i1 %desired to i8
   store i8 %frombool, i8* %desired.addr, align 1
-  %0 = load i8** %expected.addr, align 8
-  %1 = load i8** %expected.addr, align 8
-  %2 = load i8* %1, align 1
+  %0 = load i8*, i8** %expected.addr, align 8
+  %1 = load i8*, i8** %expected.addr, align 8
+  %2 = load i8, i8* %1, align 1
   %tobool = trunc i8 %2 to i1
-  %3 = load i8* %desired.addr, align 1
+  %3 = load i8, i8* %desired.addr, align 1
   %tobool1 = trunc i8 %3 to i1
-  %4 = load i8** %p.addr, align 8
+  %4 = load i8*, i8** %p.addr, align 8
   %5 = call i8 asm sideeffect "lock; cmpxchg $3, $4; mov $2, $1; sete $0", "={ax},=*rm,{ax},q,*m,~{memory},~{cc},~{dirflag},~{fpsr},~{flags}"(i8* %0, i1 %tobool, i1 %tobool1, i8* %4) nounwind
   store i8 %5, i8* %success, align 1
-  %6 = load i8* %success, align 1
+  %6 = load i8, i8* %success, align 1
   %tobool2 = trunc i8 %6 to i1
   ret i1 %tobool2
 }