forked from OSchip/llvm-project
63 lines
1.7 KiB
LLVM
63 lines
1.7 KiB
LLVM
; RUN: opt %loadPolly -polly-allow-nonaffine-loops -polly-detect -polly-print-scops -disable-output < %s | FileCheck %s
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; The SCoP contains a loop with multiple exit blocks (BBs after leaving
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; the loop). The current implementation of deriving their domain derives
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; only a common domain for all of the exit blocks. We disabled loops with
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; multiple exit blocks until this is fixed.
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; XFAIL: *
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; The BasicBlock "guaranteed" is always executed inside the non-affine subregion
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; region_entry->region_exit. As such, writes accesses in blocks that always
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; execute are MustWriteAccesses. Before Polly commit r255473, we only assumed
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; that the subregion's entry block is guaranteed to execute.
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; CHECK-NOT: MayWriteAccess
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; CHECK: MustWriteAccess := [Reduction Type: NONE] [Scalar: 0]
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; CHECK-NEXT: { Stmt_region_entry__TO__region_exit[i0] -> MemRef_A[0] };
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; CHECK-NOT: MayWriteAccess
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define void @f(i32* %A, i32* %B, i32* %C, float %b) {
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entry:
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br label %for.cond
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for.cond:
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%indvar = phi i32 [ %indvar.next, %for.inc ], [ 0, %entry ]
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%exitcond = icmp ne i32 %indvar, 1024
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br i1 %exitcond, label %region_entry, label %return
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region_entry:
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br label %bb2
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bb2:
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br label %guaranteed
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bb3:
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br label %bb3
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guaranteed:
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%ptr = getelementptr i32, i32* %B, i32 %indvar
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%val = load i32, i32* %ptr
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%cmp = icmp eq i32 %val, 0
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store i32 0, i32* %A
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br i1 %cmp, label %bb5, label %bb6
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bb5:
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br label %region_exit
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bb6:
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%ptr2 = getelementptr i32, i32* %C, i32 %indvar
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%val2 = load i32, i32* %ptr2
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%cmp2 = icmp eq i32 %val2, 0
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br i1 %cmp2, label %region_exit, label %region_entry
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region_exit:
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br label %for.inc
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for.inc:
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%indvar.next = add i32 %indvar, 1
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br label %for.cond
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return:
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ret void
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}
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