48 lines
1.4 KiB
LLVM
48 lines
1.4 KiB
LLVM
; RUN: opt < %s -instcombine -S | grep "phi i32" | count 2
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define void @test() nounwind {
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entry:
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br label %bb
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bb: ; preds = %bb16, %entry
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%i.0 = phi i32 [ 0, %entry ], [ %indvar.next, %somebb ] ; <i32> [#uses=1]
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%x.0 = phi i32 [ 37, %entry ], [ %tmp17, %somebb ] ; <i32> [#uses=1]
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%tmp = tail call i32 (...) @bork( ) nounwind ; <i32> [#uses=0]
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%tmp1 = tail call i32 (...) @bork( ) nounwind ; <i32> [#uses=0]
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%tmp2 = tail call i32 (...) @bork( ) nounwind ; <i32> [#uses=1]
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%tmp3 = icmp eq i32 %tmp2, 0 ; <i1> [#uses=1]
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br i1 %tmp3, label %bb7, label %bb5
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bb5: ; preds = %bb
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%tmp6 = tail call i32 (...) @bork( ) nounwind ; <i32> [#uses=0]
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br label %bb7
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bb7: ; preds = %bb5, %bb
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%tmp8 = tail call i32 (...) @bork( ) nounwind ; <i32> [#uses=0]
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%tmp9 = tail call i32 (...) @bork( ) nounwind ; <i32> [#uses=0]
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%tmp11 = icmp eq i32 %x.0, 37 ; <i1> [#uses=1]
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br i1 %tmp11, label %bb14, label %bb16
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bb14: ; preds = %bb7
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%tmp15 = tail call i32 (...) @bar( ) nounwind ; <i32> [#uses=0]
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br label %bb16
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bb16: ; preds = %bb14, %bb7
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%tmp17 = tail call i32 (...) @zap( ) nounwind ; <i32> [#uses=1]
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%indvar.next = add i32 %i.0, 1 ; <i32> [#uses=2]
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%exitcond = icmp eq i32 %indvar.next, 42 ; <i1> [#uses=1]
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br i1 %exitcond, label %return, label %somebb
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somebb:
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br label %bb
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return: ; preds = %bb16
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ret void
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}
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declare i32 @bork(...)
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declare i32 @bar(...)
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declare i32 @zap(...)
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