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https://github.com/c64scene-ar/llvm-6502.git
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69ccadd753
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@32115 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
1.1 KiB
LLVM
30 lines
1.1 KiB
LLVM
; This function contains two tail calls, which should be eliminated
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; RUN: llvm-upgrade < %s | llvm-as | opt -tailcallelim -stats -disable-output 2>&1 | grep '2 tailcallelim'
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int %Ack(int %M.1, int %N.1) {
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entry:
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%tmp.1 = seteq int %M.1, 0 ; <bool> [#uses=1]
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br bool %tmp.1, label %then.0, label %endif.0
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then.0:
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%tmp.4 = add int %N.1, 1 ; <int> [#uses=1]
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ret int %tmp.4
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endif.0:
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%tmp.6 = seteq int %N.1, 0 ; <bool> [#uses=1]
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br bool %tmp.6, label %then.1, label %endif.1
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then.1:
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%tmp.10 = add int %M.1, -1 ; <int> [#uses=1]
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%tmp.8 = call int %Ack( int %tmp.10, int 1 ) ; <int> [#uses=1]
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ret int %tmp.8
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endif.1:
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%tmp.13 = add int %M.1, -1 ; <int> [#uses=1]
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%tmp.17 = add int %N.1, -1 ; <int> [#uses=1]
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%tmp.14 = call int %Ack( int %M.1, int %tmp.17 ) ; <int> [#uses=1]
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%tmp.11 = call int %Ack( int %tmp.13, int %tmp.14 ) ; <int> [#uses=1]
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ret int %tmp.11
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}
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