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New Test-Case for Region Analysis

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While working on improvements to region info analysis, this test case caused an
incorrect region bb2 => bb3 to be detected.

Reviewers: grosser

Contributed-by: Nandini Singhal <cs15mtech01004@iith.ac.in>

Subscribers: llvm-commits

Differential Revision: https://reviews.llvm.org/D30652

llvm-svn: 297014
This commit is contained in:
Tobias Grosser 2017-03-06 15:20:38 +00:00
parent b8be70a569
commit b7c673a9c1
1 changed files with 39 additions and 0 deletions
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39
test/Analysis/RegionInfo/outgoing_edge_1.ll Normal file
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; REQUIRES: asserts
; RUN: opt -regions -analyze < %s | FileCheck %s
; RUN: opt < %s -passes='print<regions>' 2>&1 | FileCheck %s
; While working on improvements to region info analysis, this test
; case caused an incorrect region bb2 => bb3 to be detected.
define internal i8 @main_read() nounwind {
bb:
br label %bb1
bb1:
br i1 true, label %bb2, label %bb7
bb2:
br i1 true, label %bb4, label %bb3
bb3:
br i1 true, label %bb4, label %bb8
bb4:
br label %bb5
bb5:
br label %bb6
bb6:
br label %bb1
bb7:
br label %bb5
bb8:
ret i8 1
}
; CHECK: [0] bb => <Function Return>
; CHECK-NEXT: [1] bb1 => bb8
; CHECK-NEXT: End Region tree