llvm-project/llvm/test/Transforms/GVNPRE/shufflevector.ll

19 lines
472 B
LLVM

; RUN: llvm-as < %s | opt -gvnpre | llvm-dis | grep b.gvnpre
define i32 @extract() {
entry: ; preds = %cond_false, %entry
%foo = add <2 x i32> < i32 1, i32 1 >, < i32 1, i32 1 >
br i1 true, label %cond_true, label %cond_false
cond_true:
br label %end
cond_false:
%a = shufflevector <2 x i32> %foo, <2 x i32> undef, <2 x i32> < i32 0, i32 1 >
br label %end
end:
%b = shufflevector <2 x i32> %foo, <2 x i32> undef, <2 x i32> < i32 0, i32 1 >
ret i32 0
}