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Imported Upstream version 5.18.0.225

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Former-commit-id: 10196d987d5fc5564b9d3b33b1fdf13190f4d0b5
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Xamarin Public Jenkins (auto-signing)
2018-12-21 19:01:49 +00:00
parent 32d52ae4ca
commit f32dbaf0b2
28477 changed files with 3866961 additions and 38 deletions
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22
external/llvm/test/CodeGen/SystemZ/undef-flag.ll vendored Normal file
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@@ -0,0 +1,22 @@
; Test that the backend does not mess up the I/R in case of a use of an undef
; register. This typically happens while expanding a pseudo or otherwise
; replacing an instruction for another.
;
; RUN: llc < %s -mtriple=s390x-linux-gnu -mcpu=z13 -verify-machineinstrs | FileCheck %s
; LLCRMux
define void @f1(i8*) {
; CHECK-LABEL: f1:
; CHECK-NOT: *** Bad machine code: Using an undefined physical register ***
BB:
%L5 = load i8, i8* %0
%B9 = lshr i8 %L5, -1
br label %CF
CF: ; preds = %CF, %BB
%Cmp25 = icmp ne i8 27, %B9
br i1 %Cmp25, label %CF, label %CF34
CF34: ; preds = %CF
ret void
}