[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/Analysis/ScalarEvolution/sext-iv-1.ll b/llvm/test/Analysis/ScalarEvolution/sext-iv-1.ll
index 07f055e..575b744a 100644
--- a/llvm/test/Analysis/ScalarEvolution/sext-iv-1.ll
+++ b/llvm/test/Analysis/ScalarEvolution/sext-iv-1.ll
@@ -24,7 +24,7 @@
 	%1 = trunc i64 %i.0.reg2mem.0 to i9		; <i8> [#uses=1]
 	%2 = sext i9 %1 to i64		; <i64> [#uses=1]
 	%3 = getelementptr double, double* %x, i64 %2		; <double*> [#uses=1]
-	%4 = load double* %3, align 8		; <double> [#uses=1]
+	%4 = load double, double* %3, align 8		; <double> [#uses=1]
 	%5 = fmul double %4, 3.900000e+00		; <double> [#uses=1]
 	%6 = sext i7 %0 to i64		; <i64> [#uses=1]
 	%7 = getelementptr double, double* %x, i64 %6		; <double*> [#uses=1]
@@ -47,7 +47,7 @@
 	%1 = trunc i64 %i.0.reg2mem.0 to i9		; <i8> [#uses=1]
 	%2 = sext i9 %1 to i64		; <i64> [#uses=1]
 	%3 = getelementptr double, double* %x, i64 %2		; <double*> [#uses=1]
-	%4 = load double* %3, align 8		; <double> [#uses=1]
+	%4 = load double, double* %3, align 8		; <double> [#uses=1]
 	%5 = fmul double %4, 3.900000e+00		; <double> [#uses=1]
 	%6 = sext i8 %0 to i64		; <i64> [#uses=1]
 	%7 = getelementptr double, double* %x, i64 %6		; <double*> [#uses=1]
@@ -70,7 +70,7 @@
 	%1 = trunc i64 %i.0.reg2mem.0 to i9		; <i8> [#uses=1]
 	%2 = sext i9 %1 to i64		; <i64> [#uses=1]
 	%3 = getelementptr double, double* %x, i64 %2		; <double*> [#uses=1]
-	%4 = load double* %3, align 8		; <double> [#uses=1]
+	%4 = load double, double* %3, align 8		; <double> [#uses=1]
 	%5 = fmul double %4, 3.900000e+00		; <double> [#uses=1]
 	%6 = sext i8 %0 to i64		; <i64> [#uses=1]
 	%7 = getelementptr double, double* %x, i64 %6		; <double*> [#uses=1]
@@ -93,7 +93,7 @@
 	%1 = trunc i64 %i.0.reg2mem.0 to i9		; <i8> [#uses=1]
 	%2 = sext i9 %1 to i64		; <i64> [#uses=1]
 	%3 = getelementptr double, double* %x, i64 %2		; <double*> [#uses=1]
-	%4 = load double* %3, align 8		; <double> [#uses=1]
+	%4 = load double, double* %3, align 8		; <double> [#uses=1]
 	%5 = fmul double %4, 3.900000e+00		; <double> [#uses=1]
 	%6 = sext i8 %0 to i64		; <i64> [#uses=1]
 	%7 = getelementptr double, double* %x, i64 %6		; <double*> [#uses=1]