[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/PowerPC/2007-01-15-AsmDialect.ll b/llvm/test/CodeGen/PowerPC/2007-01-15-AsmDialect.ll
index c779288..57c3531 100644
--- a/llvm/test/CodeGen/PowerPC/2007-01-15-AsmDialect.ll
+++ b/llvm/test/CodeGen/PowerPC/2007-01-15-AsmDialect.ll
@@ -8,19 +8,19 @@
 	%ctz_x = alloca i32, align 4		; <i32*> [#uses=3]
 	%ctz_c = alloca i32, align 4		; <i32*> [#uses=2]
 	store i32 61440, i32* %ctz_x
-	%tmp = load i32* %ctz_x		; <i32> [#uses=1]
+	%tmp = load i32, i32* %ctz_x		; <i32> [#uses=1]
 	%tmp1 = sub i32 0, %tmp		; <i32> [#uses=1]
-	%tmp2 = load i32* %ctz_x		; <i32> [#uses=1]
+	%tmp2 = load i32, i32* %ctz_x		; <i32> [#uses=1]
 	%tmp3 = and i32 %tmp1, %tmp2		; <i32> [#uses=1]
 	%tmp4 = call i32 asm "$(cntlz$|cntlzw$) $0,$1", "=r,r,~{dirflag},~{fpsr},~{flags}"( i32 %tmp3 )		; <i32> [#uses=1]
 	store i32 %tmp4, i32* %ctz_c
-	%tmp5 = load i32* %ctz_c		; <i32> [#uses=1]
+	%tmp5 = load i32, i32* %ctz_c		; <i32> [#uses=1]
 	store i32 %tmp5, i32* %temp
-	%tmp6 = load i32* %temp		; <i32> [#uses=1]
+	%tmp6 = load i32, i32* %temp		; <i32> [#uses=1]
 	store i32 %tmp6, i32* %retval
 	br label %return
 
 return:		; preds = %entry
-	%retval2 = load i32* %retval		; <i32> [#uses=1]
+	%retval2 = load i32, i32* %retval		; <i32> [#uses=1]
 	ret i32 %retval2
 }