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view llvm/test/Transforms/InstSimplify/dead-code-removal.ll @ 207:2e18cbf3894f

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LLVM12
author Shinji KONO <kono@ie.u-ryukyu.ac.jp>
date Tue, 08 Jun 2021 06:07:14 +0900
parents 1d019706d866
children c4bab56944e8
line wrap: on
line source

; RUN: opt -instsimplify -S < %s | FileCheck %s

define void @foo() nounwind {
  br i1 undef, label %1, label %4

; <label>:1                                       ; preds = %1, %0
; CHECK-NOT: phi
; CHECK-NOT: sub
  %2 = phi i32 [ %3, %1 ], [ undef, %0 ]
  %3 = sub i32 0, undef
  br label %1

; <label>:4                                       ; preds = %0
  ret void
}