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llvm-mirror/test/Transforms/InstCombine/2007-12-18-AddSelCmpSub.ll

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; RUN: opt < %s -instcombine -S | grep {add} | count 1
define i32 @foo(i32 %a) {
entry:
%tmp15 = sub i32 99, %a ; <i32> [#uses=2]
%tmp16 = icmp slt i32 %tmp15, 0 ; <i1> [#uses=1]
%smax = select i1 %tmp16, i32 0, i32 %tmp15 ; <i32> [#uses=1]
%tmp12 = add i32 %smax, %a ; <i32> [#uses=1]
%tmp13 = add i32 %tmp12, 1 ; <i32> [#uses=1]
ret i32 %tmp13
}
define i32 @bar(i32 %a) {
entry:
%tmp15 = sub i32 99, %a ; <i32> [#uses=2]
%tmp16 = icmp slt i32 %tmp15, 0 ; <i1> [#uses=1]
%smax = select i1 %tmp16, i32 0, i32 %tmp15 ; <i32> [#uses=1]
%tmp12 = add i32 %smax, %a ; <i32> [#uses=1]
ret i32 %tmp12
}
define i32 @fun(i32 %a) {
entry:
%tmp15 = sub i32 99, %a ; <i32> [#uses=1]
%tmp16 = icmp slt i32 %a, 0 ; <i1> [#uses=1]
%smax = select i1 %tmp16, i32 0, i32 %tmp15 ; <i32> [#uses=1]
%tmp12 = add i32 %smax, %a ; <i32> [#uses=1]
ret i32 %tmp12
2007-12-18 10:45:40 +01:00
}