| David Majnemer | e8fd5f9 | 2016-08-29 17:14:08 +0000 | [diff] [blame] | 1 | ; RUN: opt -S -simplifycfg < %s | FileCheck %s |
| 2 | target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" |
| 3 | target triple = "x86_64-unknown-linux-gnu" |
| 4 | |
| 5 | @GV = external constant i64* |
| 6 | |
| 7 | define i64* @test1(i1 %cond, i8* %P) { |
| 8 | entry: |
| 9 | br i1 %cond, label %if, label %then |
| 10 | |
| 11 | then: |
| 12 | %bc = bitcast i8* %P to i64* |
| 13 | br label %join |
| 14 | |
| 15 | if: |
| 16 | %load = load i64*, i64** @GV, align 8, !dereferenceable !0 |
| 17 | br label %join |
| 18 | |
| 19 | join: |
| 20 | %phi = phi i64* [ %bc, %then ], [ %load, %if ] |
| 21 | ret i64* %phi |
| 22 | } |
| 23 | |
| 24 | ; CHECK-LABEL: define i64* @test1( |
| 25 | ; CHECK: %[[bc:.*]] = bitcast i8* %P to i64* |
| 26 | ; CHECK: %[[load:.*]] = load i64*, i64** @GV, align 8{{$}} |
| 27 | ; CHECK: %[[phi:.*]] = select i1 %cond, i64* %[[load]], i64* %[[bc]] |
| 28 | ; CHECK: ret i64* %[[phi]] |
| 29 | |
| 30 | |
| 31 | !0 = !{i64 8} |