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https://github.com/c64scene-ar/llvm-6502.git
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788aed9146
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@12622 91177308-0d34-0410-b5e6-96231b3b80d8
33 lines
894 B
Plaintext
33 lines
894 B
Plaintext
; These tests have an infinite trip count. We obviously shouldn't remove the
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; loops! :)
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;
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; RUN: llvm-as < %s | opt -indvars -adce -simplifycfg | llvm-dis | grep set | wc -l > %t2
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; RUN: llvm-as < %s | llvm-dis | grep set | wc -l > %t1
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; RUN: diff %t1 %t2
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int %infinite_linear() { ;; test for (i = 1; i != 100; i += 2)
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entry:
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br label %loop
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loop:
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%i = phi int [ 1, %entry ], [ %i.next, %loop ]
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%i.next = add int %i, 2
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%c = setne int %i, 100
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br bool %c, label %loop, label %loopexit
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loopexit:
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ret int %i
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}
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int %infinite_quadratic() { ;; test for (i = 1; i*i != 63; ++i)
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entry:
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br label %loop
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loop:
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%i = phi int [ 1, %entry ], [ %i.next, %loop ]
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%isquare = mul int %i, %i
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%i.next = add int %i, 1
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%c = setne int %isquare, 63
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br bool %c, label %loop, label %loopexit
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loopexit:
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ret int %i
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}
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