d2b0360197
executeScopConditionally would destroy a predecessor region if it the scop's entry was the region's exit block by forking it to polly.start and thus creating a secnd exit out of the region. This patch "shrinks" the predecessor region s.t. polly.split_new_and_old is not the region's exit anymore. llvm-svn: 245294
32 lines
1.1 KiB
LLVM
32 lines
1.1 KiB
LLVM
; RUN: opt %loadPolly -polly-detect-unprofitable -polly-no-early-exit -polly-detect -analyze < %s | FileCheck %s
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; RUN: opt %loadPolly -polly-detect-unprofitable -polly-no-early-exit -polly-codegen -verify-region-info -analyze < %s
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;
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; This is a scop directly precedented by a region, i.e. the scop's entry is the
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; region's exit block. This test is to ensure that the RegionInfo is correctly
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; preserved.
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;
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; CHECK: Valid Region for Scop: region2 => return
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;
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define void @f1(i64* %A, i64 %N) nounwind {
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entry:
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br label %region1
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region1:
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%indvar1 = phi i64 [ 0, %entry ], [ %indvar1.next, %region1 ]
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fence seq_cst
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%indvar1.next = add nsw i64 %indvar1, 1
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%exitcond1 = icmp eq i64 %indvar1.next, %N
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br i1 %exitcond1, label %region2, label %region1
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region2:
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%indvar2 = phi i64 [ 0, %region1 ], [ %indvar2.next, %region2 ]
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%scevgep2 = getelementptr i64, i64* %A, i64 %indvar2
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store i64 %indvar2, i64* %scevgep2
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%indvar2.next = add nsw i64 %indvar2, 1
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%exitcond2 = icmp eq i64 %indvar2.next, %N
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br i1 %exitcond2, label %return, label %region2
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return:
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ret void
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}
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