forked from OSchip/llvm-project
51 lines
1.4 KiB
LLVM
51 lines
1.4 KiB
LLVM
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; RUN: opt %loadPolly -polly-detect -\
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; RUN: -analyze < %s | FileCheck %s
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; CHECK: Valid Region for Scop: bb11 => bb25
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; Ensure that this test case does not trigger an assertion. At some point,
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; we asserted on scops containing accesses where the access function contained
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; an AddRec expression with a non-constant step expression. This got missed, as
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; this very specific pattern does not seem too common. Even in this test case,
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; it disappears as soon as we turn the infinite loop into a finite loop.
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define void @hoge() local_unnamed_addr {
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bb:
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%tmp = alloca [18 x [16 x i32]]
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%tmp1 = alloca [17 x i32]
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br label %bb2
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bb2:
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%tmp3 = phi i64 [ 0, %bb ], [ %tmp5, %bb2 ]
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%tmp4 = add nuw nsw i64 %tmp3, 2
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%tmp5 = add nuw nsw i64 %tmp3, 1
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br i1 undef, label %bb2, label %bb11
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bb11:
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%tmp12 = phi i64 [ %tmp23, %bb24 ], [ 1, %bb2 ]
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%tmp14 = getelementptr inbounds [17 x i32], [17 x i32]* %tmp1, i64 0, i64 1
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br label %bb15
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bb15:
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%tmp16 = sub nsw i64 %tmp12, 1
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%tmp17 = shl i64 %tmp16, 32
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%tmp18 = ashr exact i64 %tmp17, 32
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%tmp19 = getelementptr inbounds [18 x [16 x i32]], [18 x [16 x i32]]* %tmp, i64 0, i64 %tmp4, i64 %tmp18
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%tmp20 = load i32, i32* %tmp19, align 4
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store i32 4, i32* %tmp19
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br label %bb21
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bb21:
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%tmp23 = add nuw nsw i64 %tmp12, 1
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br i1 true, label %bb24, label %bb25
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bb24:
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br label %bb11
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bb25:
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ret void
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}
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