Disable the load-shrinking optimization from looking at

anything larger than 64-bits, avoiding a crash.  This should
really be fixed to use APInts, though type legalization happens
to help us out and we get good code on the attached testcase at
least.

This fixes rdar://6836460


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@70360 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/Generic/2009-04-28-i128-cmp-crash.ll

@@ -0,0 +1,16 @@
+; RUN: llvm-as < %s | llc
+; rdar://6836460
+
+define i32 @test(i128* %P) nounwind {
+entry:
+	%tmp48 = load i128* %P
+	%and49 = and i128 %tmp48, 18446744073709551616		; <i128> [#uses=1]
+	%tobool = icmp ne i128 %and49, 0		; <i1> [#uses=1]
+	br i1 %tobool, label %if.then50, label %if.end61
+
+if.then50:		; preds = %if.then20
+	ret i32 1241
+
+if.end61:		; preds = %if.then50, %if.then20, %entry
+	ret i32 123
+}