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Imported Upstream version 6.10.0.49

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Former-commit-id: 1d6753294b2993e1fbf92de9366bb9544db4189b
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Xamarin Public Jenkins (auto-signing)
2020-01-16 16:38:04 +00:00
parent d94e79959b
commit 468663ddbb
48518 changed files with 2789335 additions and 61176 deletions
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20
external/llvm-project/llvm/test/Transforms/GVN/load-from-unreachable-predecessor.ll vendored Normal file
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@@ -0,0 +1,20 @@
; RUN: opt -gvn -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
}