| Nick Lewycky | 6d55f22 | 2011-05-22 05:22:10 +0000 | [diff] [blame] | 1 | ; RUN: opt -inline %s -S -o - | FileCheck %s |
| 2 | |
| 3 | declare void @llvm.lifetime.start(i64, i8*) |
| 4 | declare void @llvm.lifetime.end(i64, i8*) |
| 5 | |
| 6 | define void @helper_both_markers() { |
| 7 | %a = alloca i8 |
| 8 | call void @llvm.lifetime.start(i64 1, i8* %a) |
| 9 | call void @llvm.lifetime.end(i64 1, i8* %a) |
| 10 | ret void |
| 11 | } |
| 12 | |
| 13 | define void @test_both_markers() { |
| 14 | ; CHECK: @test_both_markers |
| 15 | ; CHECK: llvm.lifetime.start(i64 1 |
| 16 | ; CHECK-NEXT: llvm.lifetime.end(i64 1 |
| 17 | call void @helper_both_markers() |
| 18 | ; CHECK-NEXT: llvm.lifetime.start(i64 1 |
| 19 | ; CHECK-NEXT: llvm.lifetime.end(i64 1 |
| 20 | call void @helper_both_markers() |
| 21 | ; CHECK-NEXT: ret void |
| 22 | ret void |
| 23 | } |
| 24 | |
| 25 | ;; Without this, the inliner will simplify out @test_no_marker before adding |
| 26 | ;; any lifetime markers. |
| 27 | declare void @use(i8* %a) |
| 28 | |
| 29 | define void @helper_no_markers() { |
| 30 | %a = alloca i8 |
| 31 | call void @use(i8* %a) |
| 32 | ret void |
| 33 | } |
| 34 | |
| 35 | ;; We can't use CHECK-NEXT because there's an extra call void @use in between. |
| 36 | ;; Instead, we use CHECK-NOT to verify that there are no other lifetime calls. |
| 37 | define void @test_no_marker() { |
| 38 | ; CHECK: @test_no_marker |
| 39 | ; CHECK-NOT: lifetime |
| 40 | ; CHECK: llvm.lifetime.start(i64 -1 |
| 41 | ; CHECK-NOT: lifetime |
| 42 | ; CHECK: llvm.lifetime.end(i64 -1 |
| 43 | call void @helper_no_markers() |
| 44 | ; CHECK-NOT: lifetime |
| 45 | ; CHECK: llvm.lifetime.start(i64 -1 |
| 46 | ; CHECK-NOT: lifetime |
| 47 | ; CHECK: llvm.lifetime.end(i64 -1 |
| 48 | call void @helper_no_markers() |
| 49 | ; CHECK-NOT: lifetime |
| 50 | ; CHECK: ret void |
| 51 | ret void |
| 52 | } |
| 53 | |
| 54 | define void @helper_two_casts() { |
| 55 | %a = alloca i32 |
| 56 | %b = bitcast i32* %a to i8* |
| 57 | call void @llvm.lifetime.start(i64 4, i8* %b) |
| 58 | %c = bitcast i32* %a to i8* |
| 59 | call void @llvm.lifetime.end(i64 4, i8* %c) |
| 60 | ret void |
| 61 | } |
| 62 | |
| 63 | define void @test_two_casts() { |
| 64 | ; CHECK: @test_two_casts |
| 65 | ; CHECK-NOT: lifetime |
| 66 | ; CHECK: llvm.lifetime.start(i64 4 |
| 67 | ; CHECK-NOT: lifetime |
| 68 | ; CHECK: llvm.lifetime.end(i64 4 |
| 69 | call void @helper_two_casts() |
| 70 | ; CHECK-NOT: lifetime |
| 71 | ; CHECK: llvm.lifetime.start(i64 4 |
| 72 | ; CHECK-NOT: lifetime |
| 73 | ; CHECK: llvm.lifetime.end(i64 4 |
| 74 | call void @helper_two_casts() |
| 75 | ; CHECK-NOT: lifetime |
| 76 | ; CHECK: ret void |
| 77 | ret void |
| 78 | } |