| Dan Gohman | 620c38f | 2010-11-12 02:02:39 +0000 | [diff] [blame] | 1 | ; RUN: opt < %s -basicaa -dse -S | FileCheck %s |
| Chris Lattner | fb7dd4c | 2004-07-25 07:57:50 +0000 | [diff] [blame] | 2 | |
| Dan Gohman | 620c38f | 2010-11-12 02:02:39 +0000 | [diff] [blame] | 3 | target datalayout = "e-p:64:64:64" |
| 4 | |
| Nick Lewycky | f2905af | 2011-11-05 10:48:42 +0000 | [diff] [blame^] | 5 | declare void @free(i8* nocapture) |
| 6 | declare noalias i8* @malloc(i64) |
| 7 | |
| Dan Gohman | 620c38f | 2010-11-12 02:02:39 +0000 | [diff] [blame] | 8 | ; CHECK: @test |
| 9 | ; CHECK-NEXT: bitcast |
| 10 | ; CHECK-NEXT: @free |
| 11 | ; CHECK-NEXT: ret void |
| Tanya Lattner | 5640bd1 | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 12 | define void @test(i32* %Q, i32* %P) { |
| 13 | %DEAD = load i32* %Q ; <i32> [#uses=1] |
| 14 | store i32 %DEAD, i32* %P |
| Chris Lattner | b90ed22 | 2011-06-17 03:14:27 +0000 | [diff] [blame] | 15 | %1 = bitcast i32* %P to i8* |
| 16 | tail call void @free(i8* %1) |
| Tanya Lattner | 5640bd1 | 2008-03-01 09:15:35 +0000 | [diff] [blame] | 17 | ret void |
| Chris Lattner | fb7dd4c | 2004-07-25 07:57:50 +0000 | [diff] [blame] | 18 | } |
| Chris Lattner | 57e91ea | 2008-12-06 00:53:22 +0000 | [diff] [blame] | 19 | |
| Dan Gohman | 620c38f | 2010-11-12 02:02:39 +0000 | [diff] [blame] | 20 | ; CHECK: @test2 |
| 21 | ; CHECK-NEXT: bitcast |
| 22 | ; CHECK-NEXT: @free |
| 23 | ; CHECK-NEXT: ret void |
| Chris Lattner | 57e91ea | 2008-12-06 00:53:22 +0000 | [diff] [blame] | 24 | define void @test2({i32, i32}* %P) { |
| 25 | %Q = getelementptr {i32, i32} *%P, i32 0, i32 1 |
| 26 | store i32 4, i32* %Q |
| Chris Lattner | b90ed22 | 2011-06-17 03:14:27 +0000 | [diff] [blame] | 27 | %1 = bitcast {i32, i32}* %P to i8* |
| 28 | tail call void @free(i8* %1) |
| Chris Lattner | 57e91ea | 2008-12-06 00:53:22 +0000 | [diff] [blame] | 29 | ret void |
| 30 | } |
| Dan Gohman | 620c38f | 2010-11-12 02:02:39 +0000 | [diff] [blame] | 31 | |
| Nick Lewycky | f2905af | 2011-11-05 10:48:42 +0000 | [diff] [blame^] | 32 | ; CHECK: @test3 |
| Dan Gohman | d4b7fff | 2010-11-12 02:19:17 +0000 | [diff] [blame] | 33 | ; CHECK-NOT: store |
| 34 | ; CHECK: ret void |
| Nick Lewycky | f2905af | 2011-11-05 10:48:42 +0000 | [diff] [blame^] | 35 | define void @test3() { |
| Dan Gohman | d4b7fff | 2010-11-12 02:19:17 +0000 | [diff] [blame] | 36 | %m = call i8* @malloc(i64 24) |
| 37 | store i8 0, i8* %m |
| 38 | %m1 = getelementptr i8* %m, i64 1 |
| 39 | store i8 1, i8* %m1 |
| 40 | call void @free(i8* %m) |
| 41 | ret void |
| 42 | } |
| 43 | |
| Nick Lewycky | f2905af | 2011-11-05 10:48:42 +0000 | [diff] [blame^] | 44 | ; PR11240 |
| 45 | ; CHECK: @test4 |
| 46 | ; CHECK-NOT: store |
| 47 | ; CHECK: ret void |
| 48 | define void @test4(i1 %x) nounwind { |
| 49 | entry: |
| 50 | %alloc1 = tail call noalias i8* @malloc(i64 4) nounwind |
| 51 | br i1 %x, label %skipinit1, label %init1 |
| 52 | |
| 53 | init1: |
| 54 | store i8 1, i8* %alloc1 |
| 55 | br label %skipinit1 |
| 56 | |
| 57 | skipinit1: |
| 58 | tail call void @free(i8* %alloc1) nounwind |
| 59 | ret void |
| 60 | } |