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Imported Upstream version 6.0.0.172

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Former-commit-id: f3cc9b82f3e5bd8f0fd3ebc098f789556b44e9cd
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Xamarin Public Jenkins (auto-signing)
2019-04-12 14:10:50 +00:00
parent 8016999e4d
commit 64ac736ec5
32155 changed files with 3981439 additions and 75368 deletions
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20
external/llvm/test/Transforms/NewGVN/load-from-unreachable-predecessor.ll vendored Normal file
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@@ -0,0 +1,20 @@
; RUN: opt -newgvn -S < %s | FileCheck %s
; Check that an unreachable predecessor to a PHI node doesn't cause a crash.
; PR21625.
define i32 @f(i32** %f) {
; CHECK: bb0:
; Load should be removed, since it's ignored.
; CHECK-NEXT: br label
bb0:
%bar = load i32*, i32** %f
br label %bb2
bb1:
%zed = load i32*, i32** %f
br i1 false, label %bb1, label %bb2
bb2:
%foo = phi i32* [ null, %bb0 ], [ %zed, %bb1 ]
%storemerge = load i32, i32* %foo
ret i32 %storemerge
}