derek.holloway
7502bf64a4
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51 lines
1.2 KiB
LLVM
51 lines
1.2 KiB
LLVM
; RUN: opt < %s -disable-output "-passes=print<scalar-evolution>" 2>&1 | FileCheck %s
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; Exercise getConstantEvolvingPHIOperands on an interesting loop.
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; This should complete in milliseconds, not minutes.
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; Just check that it actually ran trip count analysis.
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; CHECK: Determining loop execution counts for: @test
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define void @test() nounwind {
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entry:
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br label %loop
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loop:
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%iv = phi i32 [ %30, %loop ], [ 0, %entry ]
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%0 = add i32 %iv, 1
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%1 = add i32 %0, 2
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%2 = add i32 %1, %0
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%3 = add i32 %2, %1
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%4 = add i32 %3, %2
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%5 = add i32 %4, %3
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%6 = add i32 %5, %4
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%7 = add i32 %6, %5
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%8 = add i32 %7, %6
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%9 = add i32 %8, %7
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%10 = add i32 %9, %8
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%11 = add i32 %10, %9
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%12 = add i32 %11, %10
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%13 = add i32 %12, %11
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%14 = add i32 %13, %12
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%15 = add i32 %14, %13
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%16 = add i32 %15, %14
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%17 = add i32 %16, %15
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%18 = add i32 %17, %16
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%19 = add i32 %18, %17
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%20 = add i32 %19, %18
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%21 = add i32 %20, %19
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%22 = add i32 %21, %20
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%23 = add i32 %22, %21
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%24 = add i32 %23, %22
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%25 = add i32 %24, %23
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%26 = add i32 %25, %24
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%27 = add i32 %26, %25
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%28 = add i32 %27, %26
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%29 = add i32 %28, %27
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%30 = add i32 %29, %28
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%cmp = icmp eq i32 %30, -108
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br i1 %cmp, label %exit, label %loop
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exit:
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unreachable
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}
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