| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -basic-aa -dse -S | FileCheck %s |
| |
| target datalayout = "e-p:64:64:64" |
| |
| declare void @free(i8* nocapture) |
| declare noalias i8* @malloc(i64) |
| |
| define void @test(i32* %Q, i32* %P) { |
| ; CHECK-LABEL: @test( |
| ; CHECK-NEXT: [[TMP1:%.*]] = bitcast i32* [[P:%.*]] to i8* |
| ; CHECK-NEXT: tail call void @free(i8* [[TMP1]]) [[ATTR0:#.*]] |
| ; CHECK-NEXT: ret void |
| ; |
| %DEAD = load i32, i32* %Q ; <i32> [#uses=1] |
| store i32 %DEAD, i32* %P |
| %1 = bitcast i32* %P to i8* |
| tail call void @free(i8* %1) nounwind |
| ret void |
| } |
| |
| define void @test2({i32, i32}* %P) { |
| ; CHECK-LABEL: @test2( |
| ; CHECK-NEXT: [[TMP1:%.*]] = bitcast { i32, i32 }* [[P:%.*]] to i8* |
| ; CHECK-NEXT: tail call void @free(i8* [[TMP1]]) [[ATTR0]] |
| ; CHECK-NEXT: ret void |
| ; |
| %Q = getelementptr {i32, i32}, {i32, i32} *%P, i32 0, i32 1 |
| store i32 4, i32* %Q |
| %1 = bitcast {i32, i32}* %P to i8* |
| tail call void @free(i8* %1) nounwind |
| ret void |
| } |
| |
| define void @test3() { |
| ; CHECK-LABEL: @test3( |
| ; CHECK-NEXT: [[M:%.*]] = call i8* @malloc(i64 24) |
| ; CHECK-NEXT: call void @free(i8* [[M]]) [[ATTR0]] |
| ; CHECK-NEXT: ret void |
| ; |
| %m = call i8* @malloc(i64 24) |
| store i8 0, i8* %m |
| %m1 = getelementptr i8, i8* %m, i64 1 |
| store i8 1, i8* %m1 |
| call void @free(i8* %m) nounwind |
| ret void |
| } |
| |
| ; PR11240 |
| define void @test4(i1 %x) nounwind { |
| ; CHECK-LABEL: @test4( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[ALLOC1:%.*]] = tail call noalias i8* @malloc(i64 4) [[ATTR0]] |
| ; CHECK-NEXT: br i1 [[X:%.*]], label [[SKIPINIT1:%.*]], label [[INIT1:%.*]] |
| ; CHECK: init1: |
| ; CHECK-NEXT: br label [[SKIPINIT1]] |
| ; CHECK: skipinit1: |
| ; CHECK-NEXT: tail call void @free(i8* [[ALLOC1]]) [[ATTR0]] |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| %alloc1 = tail call noalias i8* @malloc(i64 4) nounwind |
| br i1 %x, label %skipinit1, label %init1 |
| |
| init1: |
| store i8 1, i8* %alloc1 |
| br label %skipinit1 |
| |
| skipinit1: |
| tail call void @free(i8* %alloc1) nounwind |
| ret void |
| } |
| |
| define void @test5() { |
| ; CHECK-LABEL: @test5( |
| ; CHECK-NEXT: br label [[BB:%.*]] |
| ; CHECK: bb: |
| ; CHECK-NEXT: tail call void @free(i8* undef) [[ATTR0]] |
| ; CHECK-NEXT: br label [[BB]] |
| ; |
| br label %bb |
| |
| bb: |
| tail call void @free(i8* undef) nounwind |
| br label %bb |
| } |
| |
| |
| %struct = type { i32 , i32 } |
| |
| ; Test case inspired by PR48036. |
| define void @delete_field_after(%struct* %ptr) { |
| ; |
| ; CHECK-LABEL: @delete_field_after( |
| ; CHECK-NEXT: [[PTR_F0:%.*]] = getelementptr [[STRUCT:%.*]], %struct* [[PTR:%.*]], i32 1 |
| ; CHECK-NEXT: [[BC:%.*]] = bitcast %struct* [[PTR_F0]] to i8* |
| ; CHECK-NEXT: [[PTR_F1:%.*]] = getelementptr [[STRUCT]], %struct* [[PTR]], i32 0, i32 1 |
| ; CHECK-NEXT: store i32 0, i32* [[PTR_F1]], align 4 |
| ; CHECK-NEXT: call void @free(i8* [[BC]]) |
| ; CHECK-NEXT: ret void |
| ; |
| %ptr.f0 = getelementptr %struct, %struct* %ptr, i32 1 |
| %bc = bitcast %struct* %ptr.f0 to i8* |
| %ptr.f1 = getelementptr %struct, %struct* %ptr, i32 0, i32 1 |
| store i32 0, i32* %ptr.f1 |
| call void @free(i8* %bc) |
| ret void |
| } |
| |
| ; Test case inspired by PR48036. |
| define void @delete_field_before(%struct* %ptr) { |
| ; CHECK-LABEL: @delete_field_before( |
| ; CHECK-NEXT: [[PTR_F0:%.*]] = getelementptr [[STRUCT:%.*]], %struct* [[PTR:%.*]], i32 0 |
| ; CHECK-NEXT: [[BC:%.*]] = bitcast %struct* [[PTR_F0]] to i8* |
| ; CHECK-NEXT: call void @free(i8* [[BC]]) |
| ; CHECK-NEXT: ret void |
| ; |
| %ptr.f0 = getelementptr %struct, %struct* %ptr, i32 0 |
| %bc = bitcast %struct* %ptr.f0 to i8* |
| %ptr.f1 = getelementptr %struct, %struct* %ptr, i32 1, i32 1 |
| store i32 0, i32* %ptr.f1 |
| call void @free(i8* %bc) |
| ret void |
| } |