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https://github.com/c64scene-ar/llvm-6502.git
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33 lines
871 B
LLVM
33 lines
871 B
LLVM
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; Test to make sure that SSA is correctly updated
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; RUN: as < %s | opt -cee
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;
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implementation ; Functions:
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int %test(int %A, int %B, bool %c0) {
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Start: ; No predecessors!
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%c1 = seteq int %A, %B ; <bool> [#uses=1]
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br bool %c1, label %Eq, label %Start_crit_edge
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Start_crit_edge: ; preds = %Start
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br label %Loop
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Eq: ; preds = %Start
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br label %Loop
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Loop: ; preds = %Bottom, %Eq, %Start_crit_edge
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%Z = phi int [ %A, %Start_crit_edge ], [ %B, %Eq ], [ %Z, %Bottom ] ; <int> [#uses=2]
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%c2 = setge int %A, %B ; <bool> [#uses=1]
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br bool %c2, label %Forwarded, label %Loop_crit_edge
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Loop_crit_edge: ; preds = %Loop
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br label %Bottom
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Forwarded: ; preds = %Loop
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%Z2 = phi int [ %Z, %Loop ] ; <int> [#uses=1]
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call int %test( int 0, int %Z2, bool true ) ; <int>:0 [#uses=0]
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br label %Bottom
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Bottom: ; preds = %Forwarded, %Loop_crit_edge
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br label %Loop
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}
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