1; RUN: opt -S -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s 2target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 3target triple = "x86_64-unknown-linux-gnu" 4 5@GV = external constant ptr 6 7define ptr @test1(i1 %cond, ptr %P) { 8entry: 9 br i1 %cond, label %if, label %then 10 11then: 12 br label %join 13 14if: 15 %load = load ptr, ptr @GV, align 8, !dereferenceable !0 16 br label %join 17 18join: 19 %phi = phi ptr [ %P, %then ], [ %load, %if ] 20 ret ptr %phi 21} 22 23; CHECK-LABEL: define ptr @test1( 24; CHECK: %[[load:.*]] = load ptr, ptr @GV, align 8{{$}} 25; CHECK: %[[phi:.*]] = select i1 %cond, ptr %[[load]], ptr %P 26; CHECK: ret ptr %[[phi]] 27 28 29!0 = !{i64 8} 30