llvm-6502/test/Transforms/GVNPRE/cast.ll

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; RUN: llvm-as < %s | opt -gvnpre | llvm-dis | grep b.gvnpre
define i32 @extract() {
entry: ; preds = %cond_false, %entry
br i1 true, label %cond_true, label %cond_false
cond_true:
br label %end
cond_false:
%a = sext i16 0 to i32
br label %end
end:
%b = sext i16 0 to i32
ret i32 %b
}