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| author | Chris Lattner <sabre@nondot.org> | 2008-04-25 04:12:29 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2008-04-25 04:12:29 +0000 |
| commit | eede65ce6cb29c8f3a701be8606e95c9a213efff (patch) | |
| tree | 7ca4d995844361522f706b262efca29ef027329a /lib/Transforms/Utils/LoopSimplify.cpp | |
| parent | 877ee973e2d6ade85e38babbd303d96347c7dc8e (diff) | |
Don't infininitely thread branches when a threaded edge
goes back to the block, e.g.:
Threading edge through bool from 'bb37.us.thread3829' to 'bb37.us' with cost: 1, across block:
bb37.us: ; preds = %bb37.us.thread3829, %bb37.us, %bb33
%D1361.1.us = phi i32 [ %tmp36, %bb33 ], [ %D1361.1.us, %bb37.us ], [ 0, %bb37.us.thread3829 ] ; <i32> [#uses=2]
%tmp39.us = icmp eq i32 %D1361.1.us, 0 ; <i1> [#uses=1]
br i1 %tmp39.us, label %bb37.us, label %bb42.us
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50251 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Transforms/Utils/LoopSimplify.cpp')
0 files changed, 0 insertions, 0 deletions