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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
34 lines
1.2 KiB
LLVM
34 lines
1.2 KiB
LLVM
; This testcase contains a entire loop that should be removed. The only thing
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; left is the store instruction in BB0. The problem this testcase was running
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; into was that when the reg109 PHI was getting zero predecessors, it was
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; removed even though there were uses still around. Now the uses are filled
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; in with a dummy value before the PHI is deleted.
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;
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; RUN: llvm-upgrade < %s | llvm-as | opt -adce
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%node_t = type { double*, %node_t*, %node_t**, double**, double*, int, int }
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implementation ; Functions:
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void %localize_local(%node_t* %nodelist) {
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bb0: ;[#uses=0]
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%nodelist = alloca %node_t* ; <%node_t**> [#uses=2]
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store %node_t* %nodelist, %node_t** %nodelist
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br label %bb1
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bb1: ;[#uses=2]
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%reg107 = load %node_t** %nodelist ; <%node_t*> [#uses=2]
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%cond211 = seteq %node_t* %reg107, null ; <bool> [#uses=1]
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br bool %cond211, label %bb3, label %bb2
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bb2: ;[#uses=3]
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%reg109 = phi %node_t* [ %reg110, %bb2 ], [ %reg107, %bb1 ] ; <%node_t*> [#uses=1]
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%reg212 = getelementptr %node_t* %reg109, long 0, uint 1 ; <%node_t**> [#uses=1]
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%reg110 = load %node_t** %reg212 ; <%node_t*> [#uses=2]
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%cond213 = setne %node_t* %reg110, null ; <bool> [#uses=1]
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br bool %cond213, label %bb2, label %bb3
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bb3: ;[#uses=2]
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ret void
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}
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