| ; RUN: opt -S -passes=simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s |
| target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| @GV = external constant ptr |
| |
| define ptr @test1(i1 %cond, ptr %P) { |
| entry: |
| br i1 %cond, label %if, label %then |
| |
| then: |
| br label %join |
| |
| if: |
| %load = load ptr, ptr @GV, align 8, !dereferenceable !0 |
| br label %join |
| |
| join: |
| %phi = phi ptr [ %P, %then ], [ %load, %if ] |
| ret ptr %phi |
| } |
| |
| ; CHECK-LABEL: define ptr @test1( |
| ; CHECK: %[[load:.*]] = load ptr, ptr @GV, align 8{{$}} |
| ; CHECK: %[[phi:.*]] = select i1 %cond, ptr %[[load]], ptr %P |
| ; CHECK: ret ptr %[[phi]] |
| |
| |
| !0 = !{i64 8} |
