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Imported Upstream version 5.18.0.179

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Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215
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Xamarin Public Jenkins (auto-signing)
2018-10-25 08:34:57 +00:00
parent d6bde52373
commit 8625704ad8
28485 changed files with 3866843 additions and 50 deletions
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24
external/llvm/test/Transforms/JumpThreading/degenerate-phi.ll vendored Normal file
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@@ -0,0 +1,24 @@
; RUN: opt -jump-threading -disable-output < %s
; PR9112
; This is actually a test for value tracking. Jump threading produces
; "%phi = phi i16" when it removes all edges leading to %unreachable.
; The .ll parser won't let us write that directly since it's invalid code.
define void @func() nounwind {
entry:
br label %bb
bb:
br label %bb
unreachable:
%phi = phi i16 [ %add, %unreachable ], [ 0, %next ]
%add = add i16 0, %phi
%cmp = icmp slt i16 %phi, 0
br i1 %cmp, label %unreachable, label %next
next:
br label %unreachable
}