The AND instruction leaves the V flag unmodified, so it falls victim to the same

problem as all of the other instructions we fold with CMPs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129602 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/ARM/2011-04-15-AndVFlagPeepholeBug.ll

@@ -0,0 +1,22 @@
+; RUN: llc < %s -mtriple=thumbv7-apple-darwin10 | FileCheck %s
+
+; CHECK: _f
+; CHECK-NOT: ands
+; CHECK: cmp
+; CHECK: blxle _g
+
+define i32 @f(i32 %a, i32 %b) nounwind ssp {
+entry:
+  %and = and i32 %b, %a
+  %cmp = icmp slt i32 %and, 1
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  tail call void (...)* @g(i32 %a, i32 %b) nounwind
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  ret i32 %and
+}
+
+declare void @g(...)