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5c779a46b0
force evaluation (ComputeIterationCountExhaustively) should be turned off. It doesn't apply to trip-count2.ll because this file tests the brute force evaluation. The test for PR2364 (2008-05-25-NegativeStepToZero.ll) currently fails showing that the patch for this bug doesn't work. I'll fix it in a few hours with a patch for PR2088. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53792 91177308-0d34-0410-b5e6-96231b3b80d8
33 lines
1006 B
LLVM
33 lines
1006 B
LLVM
; RUN: llvm-as < %s | opt -analyze -scalar-evolution \
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; RUN: -scalar-evolution-max-iterations=0 | grep {100 iterations}
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; PR1101
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@A = weak global [1000 x i32] zeroinitializer, align 32
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define void @test(i32 %N) {
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entry:
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"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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br label %bb3
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bb: ; preds = %bb3
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%tmp = getelementptr [1000 x i32]* @A, i32 0, i32 %i.0 ; <i32*> [#uses=1]
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store i32 123, i32* %tmp
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%tmp2 = add i32 %i.0, 1 ; <i32> [#uses=1]
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br label %bb3
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bb3: ; preds = %bb, %entry
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%i.0 = phi i32 [ 2, %entry ], [ %tmp2, %bb ] ; <i32> [#uses=3]
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%SQ = mul i32 %i.0, %i.0
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%tmp4 = mul i32 %i.0, 2
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%tmp5 = sub i32 %SQ, %tmp4
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%tmp3 = icmp sle i32 %tmp5, 9999 ; <i1> [#uses=1]
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br i1 %tmp3, label %bb, label %bb5
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bb5: ; preds = %bb3
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br label %return
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return: ; preds = %bb5
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ret void
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}
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