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llvm-project/llvm/test/Analysis/ScalarEvolution/cache_loop_exit_limit.ll

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[SCEV] Re-enable "Cache results of computeExitLimit" The patch rL309080 was reverted because it did not clean up the cache on "forgetValue" method call. This patch re-enables this change, adds the missing check and introduces two new unit tests that make sure that the cache is cleaned properly. Differential Revision: https://reviews.llvm.org/D36087 llvm-svn: 309925
2017-08-03 16:41:30 +08:00
; RUN: opt -scalar-evolution-max-arith-depth=4 -scalar-evolution-max-add-rec-size=4 -loop-reduce -S < %s | FileCheck %s
; Check that the test does not hang.
define void @test_01(i32* nocapture %a) local_unnamed_addr {
; CHECK-LABEL: @test_01(
while.body.outer:
%arrayidx2 = getelementptr inbounds i32, i32* %a, i64 96
%arrayidx2.promoted50 = load i32, i32* %arrayidx2, align 1
%a.promoted = load i32, i32* %a, align 1
%add347.peel = xor i32 %arrayidx2.promoted50, -1
%tobool48.peel = icmp eq i32 %a.promoted, %add347.peel
br i1 %tobool48.peel, label %while.body.preheader, label %while.body4.preheader
while.body.preheader: ; preds = %while.body.outer
%tobool48 = icmp eq i32 %a.promoted, 1
br label %while.body
while.body: ; preds = %while.body.preheader, %while.body
br i1 %tobool48, label %while.body, label %while.body4.preheader.loopexit
while.body4.preheader.loopexit: ; preds = %while.body
br label %while.body4.preheader
while.body4.preheader: ; preds = %while.body4.preheader.loopexit, %while.body.outer
br label %while.body4
while.body4: ; preds = %while.body4.preheader, %while.end.22
%0 = phi i32 [ %mul.22, %while.end.22 ], [ %arrayidx2.promoted50, %while.body4.preheader ]
%mul = mul nsw i32 %0, %0
br label %while.cond17
while.cond17: ; preds = %while.cond17, %while.body4
%add22.sink = phi i32 [ %add22, %while.cond17 ], [ %mul, %while.body4 ]
%cmp = icmp slt i32 %add22.sink, 0
%add22 = add nsw i32 %add22.sink, 1024
br i1 %cmp, label %while.cond17, label %while.end
while.end: ; preds = %while.cond17
%mul.1 = mul nsw i32 %add22.sink, %add22.sink
br label %while.cond17.1
while.cond17.1: ; preds = %while.cond17.1, %while.end
%add22.sink.1 = phi i32 [ %add22.1, %while.cond17.1 ], [ %mul.1, %while.end ]
%cmp.1 = icmp slt i32 %add22.sink.1, 0
%add22.1 = add nsw i32 %add22.sink.1, 2048
br i1 %cmp.1, label %while.cond17.1, label %while.end.1
while.end.1: ; preds = %while.cond17.1
%mul.2 = mul nsw i32 %add22.sink.1, %add22.sink.1
br label %while.cond17.2
while.cond17.2: ; preds = %while.cond17.2, %while.end.1
%add22.sink.2 = phi i32 [ %add22.2, %while.cond17.2 ], [ %mul.2, %while.end.1 ]
%cmp.2 = icmp slt i32 %add22.sink.2, 0
%add22.2 = add nsw i32 %add22.sink.2, 4096
br i1 %cmp.2, label %while.cond17.2, label %while.end.2
while.end.2: ; preds = %while.cond17.2
%mul.3 = mul nsw i32 %add22.sink.2, %add22.sink.2
br label %while.cond17.3
while.cond17.3: ; preds = %while.cond17.3, %while.end.2
%add22.sink.3 = phi i32 [ %add22.3, %while.cond17.3 ], [ %mul.3, %while.end.2 ]
%cmp.3 = icmp slt i32 %add22.sink.3, 0
%add22.3 = add nsw i32 %add22.sink.3, 8192
br i1 %cmp.3, label %while.cond17.3, label %while.end.3
while.end.3: ; preds = %while.cond17.3
%mul.4 = mul nsw i32 %add22.sink.3, %add22.sink.3
br label %while.cond17.4
while.cond17.4: ; preds = %while.cond17.4, %while.end.3
%add22.sink.4 = phi i32 [ %add22.4, %while.cond17.4 ], [ %mul.4, %while.end.3 ]
%cmp.4 = icmp slt i32 %add22.sink.4, 0
%add22.4 = add nsw i32 %add22.sink.4, 16384
br i1 %cmp.4, label %while.cond17.4, label %while.end.4
while.end.4: ; preds = %while.cond17.4
%mul.5 = mul nsw i32 %add22.sink.4, %add22.sink.4
br label %while.cond17.5
while.cond17.5: ; preds = %while.cond17.5, %while.end.4
%add22.sink.5 = phi i32 [ %add22.5, %while.cond17.5 ], [ %mul.5, %while.end.4 ]
%cmp.5 = icmp slt i32 %add22.sink.5, 0
%add22.5 = add nsw i32 %add22.sink.5, 32768
br i1 %cmp.5, label %while.cond17.5, label %while.end.5
while.end.5: ; preds = %while.cond17.5
%mul.6 = mul nsw i32 %add22.sink.5, %add22.sink.5
br label %while.cond17.6
while.cond17.6: ; preds = %while.cond17.6, %while.end.5
%add22.sink.6 = phi i32 [ %add22.6, %while.cond17.6 ], [ %mul.6, %while.end.5 ]
%cmp.6 = icmp slt i32 %add22.sink.6, 0
%add22.6 = add nsw i32 %add22.sink.6, 65536
br i1 %cmp.6, label %while.cond17.6, label %while.end.6
while.end.6: ; preds = %while.cond17.6
%mul.7 = mul nsw i32 %add22.sink.6, %add22.sink.6
br label %while.cond17.7
while.cond17.7: ; preds = %while.cond17.7, %while.end.6
%add22.sink.7 = phi i32 [ %add22.7, %while.cond17.7 ], [ %mul.7, %while.end.6 ]
%cmp.7 = icmp slt i32 %add22.sink.7, 0
%add22.7 = add nsw i32 %add22.sink.7, 131072
br i1 %cmp.7, label %while.cond17.7, label %while.end.7
while.end.7: ; preds = %while.cond17.7
%mul.8 = mul nsw i32 %add22.sink.7, %add22.sink.7
br label %while.cond17.8
while.cond17.8: ; preds = %while.cond17.8, %while.end.7
%add22.sink.8 = phi i32 [ %add22.8, %while.cond17.8 ], [ %mul.8, %while.end.7 ]
%cmp.8 = icmp slt i32 %add22.sink.8, 0
%add22.8 = add nsw i32 %add22.sink.8, 262144
br i1 %cmp.8, label %while.cond17.8, label %while.end.8
while.end.8: ; preds = %while.cond17.8
%mul.9 = mul nsw i32 %add22.sink.8, %add22.sink.8
br label %while.cond17.9
while.cond17.9: ; preds = %while.cond17.9, %while.end.8
%add22.sink.9 = phi i32 [ %add22.9, %while.cond17.9 ], [ %mul.9, %while.end.8 ]
%cmp.9 = icmp slt i32 %add22.sink.9, 0
%add22.9 = add nsw i32 %add22.sink.9, 524288
br i1 %cmp.9, label %while.cond17.9, label %while.end.9
while.end.9: ; preds = %while.cond17.9
%mul.10 = mul nsw i32 %add22.sink.9, %add22.sink.9
br label %while.cond17.10
while.cond17.10: ; preds = %while.cond17.10, %while.end.9
%add22.sink.10 = phi i32 [ %add22.10, %while.cond17.10 ], [ %mul.10, %while.end.9 ]
%cmp.10 = icmp slt i32 %add22.sink.10, 0
%add22.10 = add nsw i32 %add22.sink.10, 1048576
br i1 %cmp.10, label %while.cond17.10, label %while.end.10
while.end.10: ; preds = %while.cond17.10
%mul.11 = mul nsw i32 %add22.sink.10, %add22.sink.10
br label %while.cond17.11
while.cond17.11: ; preds = %while.cond17.11, %while.end.10
%add22.sink.11 = phi i32 [ %add22.11, %while.cond17.11 ], [ %mul.11, %while.end.10 ]
%cmp.11 = icmp slt i32 %add22.sink.11, 0
%add22.11 = add nsw i32 %add22.sink.11, 2097152
br i1 %cmp.11, label %while.cond17.11, label %while.end.11
while.end.11: ; preds = %while.cond17.11
%mul.12 = mul nsw i32 %add22.sink.11, %add22.sink.11
br label %while.cond17.12
while.cond17.12: ; preds = %while.cond17.12, %while.end.11
%add22.sink.12 = phi i32 [ %add22.12, %while.cond17.12 ], [ %mul.12, %while.end.11 ]
%cmp.12 = icmp slt i32 %add22.sink.12, 0
%add22.12 = add nsw i32 %add22.sink.12, 4194304
br i1 %cmp.12, label %while.cond17.12, label %while.end.12
while.end.12: ; preds = %while.cond17.12
%mul.13 = mul nsw i32 %add22.sink.12, %add22.sink.12
br label %while.cond17.13
while.cond17.13: ; preds = %while.cond17.13, %while.end.12
%add22.sink.13 = phi i32 [ %add22.13, %while.cond17.13 ], [ %mul.13, %while.end.12 ]
%cmp.13 = icmp slt i32 %add22.sink.13, 0
%add22.13 = add nsw i32 %add22.sink.13, 8388608
br i1 %cmp.13, label %while.cond17.13, label %while.end.13
while.end.13: ; preds = %while.cond17.13
%mul.14 = mul nsw i32 %add22.sink.13, %add22.sink.13
br label %while.cond17.14
while.cond17.14: ; preds = %while.cond17.14, %while.end.13
%add22.sink.14 = phi i32 [ %add22.14, %while.cond17.14 ], [ %mul.14, %while.end.13 ]
%cmp.14 = icmp slt i32 %add22.sink.14, 0
%add22.14 = add nsw i32 %add22.sink.14, 16777216
br i1 %cmp.14, label %while.cond17.14, label %while.end.14
while.end.14: ; preds = %while.cond17.14
%mul.15 = mul nsw i32 %add22.sink.14, %add22.sink.14
br label %while.cond17.15
while.cond17.15: ; preds = %while.cond17.15, %while.end.14
%add22.sink.15 = phi i32 [ %add22.15, %while.cond17.15 ], [ %mul.15, %while.end.14 ]
%cmp.15 = icmp slt i32 %add22.sink.15, 0
%add22.15 = add nsw i32 %add22.sink.15, 33554432
br i1 %cmp.15, label %while.cond17.15, label %while.end.15
while.end.15: ; preds = %while.cond17.15
%mul.16 = mul nsw i32 %add22.sink.15, %add22.sink.15
br label %while.cond17.16
while.cond17.16: ; preds = %while.cond17.16, %while.end.15
%add22.sink.16 = phi i32 [ %add22.16, %while.cond17.16 ], [ %mul.16, %while.end.15 ]
%cmp.16 = icmp slt i32 %add22.sink.16, 0
%add22.16 = add nsw i32 %add22.sink.16, 67108864
br i1 %cmp.16, label %while.cond17.16, label %while.end.16
while.end.16: ; preds = %while.cond17.16
%mul.17 = mul nsw i32 %add22.sink.16, %add22.sink.16
br label %while.cond17.17
while.cond17.17: ; preds = %while.cond17.17, %while.end.16
%add22.sink.17 = phi i32 [ %add22.17, %while.cond17.17 ], [ %mul.17, %while.end.16 ]
%cmp.17 = icmp slt i32 %add22.sink.17, 0
%add22.17 = add nsw i32 %add22.sink.17, 134217728
br i1 %cmp.17, label %while.cond17.17, label %while.end.17
while.end.17: ; preds = %while.cond17.17
%mul.18 = mul nsw i32 %add22.sink.17, %add22.sink.17
br label %while.cond17.18
while.cond17.18: ; preds = %while.cond17.18, %while.end.17
%add22.sink.18 = phi i32 [ %add22.18, %while.cond17.18 ], [ %mul.18, %while.end.17 ]
%cmp.18 = icmp slt i32 %add22.sink.18, 0
%add22.18 = add nsw i32 %add22.sink.18, 268435456
br i1 %cmp.18, label %while.cond17.18, label %while.end.18
while.end.18: ; preds = %while.cond17.18
%mul.19 = mul nsw i32 %add22.sink.18, %add22.sink.18
br label %while.cond17.19
while.cond17.19: ; preds = %while.cond17.19, %while.end.18
%add22.sink.19 = phi i32 [ %add22.19, %while.cond17.19 ], [ %mul.19, %while.end.18 ]
%cmp.19 = icmp slt i32 %add22.sink.19, 0
%add22.19 = add nsw i32 %add22.sink.19, 536870912
br i1 %cmp.19, label %while.cond17.19, label %while.end.19
while.end.19: ; preds = %while.cond17.19
%mul.20 = mul nsw i32 %add22.sink.19, %add22.sink.19
br label %while.cond17.20
while.cond17.20: ; preds = %while.cond17.20, %while.end.19
%add22.sink.20 = phi i32 [ %add22.20, %while.cond17.20 ], [ %mul.20, %while.end.19 ]
%cmp.20 = icmp slt i32 %add22.sink.20, 0
%add22.20 = add nsw i32 %add22.sink.20, 1073741824
br i1 %cmp.20, label %while.cond17.20, label %while.end.20
while.end.20: ; preds = %while.cond17.20
%mul.21 = mul nsw i32 %add22.sink.20, %add22.sink.20
br label %while.cond17.21
while.cond17.21: ; preds = %while.cond17.21, %while.end.20
%add22.sink.21 = phi i32 [ %add22.21, %while.cond17.21 ], [ %mul.21, %while.end.20 ]
%cmp.21 = icmp slt i32 %add22.sink.21, 0
%add22.21 = or i32 %add22.sink.21, -2147483648
br i1 %cmp.21, label %while.cond17.21, label %while.end.22
while.end.22: ; preds = %while.cond17.21
%mul.22 = mul nsw i32 %add22.sink.21, %add22.sink.21
br label %while.body4
}