| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -S -memcpyopt < %s | FileCheck %s |
| |
| define void @test_copy_uninit([1000 x [1000 x i32]]* %arg) { |
| ; CHECK-LABEL: @test_copy_uninit( |
| ; CHECK-NEXT: start: |
| ; CHECK-NEXT: [[ALLOCA:%.*]] = alloca [1000 x i32], align 4 |
| ; CHECK-NEXT: [[ALLOCA_I8:%.*]] = bitcast [1000 x i32]* [[ALLOCA]] to i8* |
| ; CHECK-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* [[ARG:%.*]], i64 0, i64 0 |
| ; CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* [[ARG]], i64 0, i64 1000 |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[CURRENT:%.*]] = phi [1000 x i32]* [ [[BEGIN]], [[START:%.*]] ], [ [[NEXT:%.*]], [[LOOP]] ] |
| ; CHECK-NEXT: [[CURRENT_I8:%.*]] = bitcast [1000 x i32]* [[CURRENT]] to i8* |
| ; CHECK-NEXT: [[NEXT]] = getelementptr inbounds [1000 x i32], [1000 x i32]* [[CURRENT]], i64 1 |
| ; CHECK-NEXT: [[COND:%.*]] = icmp eq [1000 x i32]* [[NEXT]], [[END]] |
| ; CHECK-NEXT: br i1 [[COND]], label [[EXIT:%.*]], label [[LOOP]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| start: |
| %alloca = alloca [1000 x i32], align 4 |
| %alloca.i8 = bitcast [1000 x i32]* %alloca to i8* |
| %begin = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* %arg, i64 0, i64 0 |
| %end = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* %arg, i64 0, i64 1000 |
| br label %loop |
| |
| loop: ; preds = %loop, %start |
| %current = phi [1000 x i32]* [ %begin, %start ], [ %next, %loop ] |
| %current.i8 = bitcast [1000 x i32]* %current to i8* |
| call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 dereferenceable(4000) %current.i8, i8* nonnull align 4 dereferenceable(4000) %alloca.i8, i64 4000, i1 false) |
| %next = getelementptr inbounds [1000 x i32], [1000 x i32]* %current, i64 1 |
| %cond = icmp eq [1000 x i32]* %next, %end |
| br i1 %cond, label %exit, label %loop |
| |
| exit: ; preds = %loop |
| ret void |
| } |
| |
| define void @test_copy_zero([1000 x [1000 x i32]]* %arg) { |
| ; CHECK-LABEL: @test_copy_zero( |
| ; CHECK-NEXT: start: |
| ; CHECK-NEXT: [[ALLOCA:%.*]] = alloca [1000 x i32], align 4 |
| ; CHECK-NEXT: [[ALLOCA_I8:%.*]] = bitcast [1000 x i32]* [[ALLOCA]] to i8* |
| ; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* nonnull align 4 dereferenceable(4000) [[ALLOCA_I8]], i8 0, i64 4000, i1 false) |
| ; CHECK-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* [[ARG:%.*]], i64 0, i64 0 |
| ; CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* [[ARG]], i64 0, i64 1000 |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[CURRENT:%.*]] = phi [1000 x i32]* [ [[BEGIN]], [[START:%.*]] ], [ [[NEXT:%.*]], [[LOOP]] ] |
| ; CHECK-NEXT: [[CURRENT_I8:%.*]] = bitcast [1000 x i32]* [[CURRENT]] to i8* |
| ; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[CURRENT_I8]], i8 0, i64 4000, i1 false) |
| ; CHECK-NEXT: [[NEXT]] = getelementptr inbounds [1000 x i32], [1000 x i32]* [[CURRENT]], i64 1 |
| ; CHECK-NEXT: [[COND:%.*]] = icmp eq [1000 x i32]* [[NEXT]], [[END]] |
| ; CHECK-NEXT: br i1 [[COND]], label [[EXIT:%.*]], label [[LOOP]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| start: |
| %alloca = alloca [1000 x i32], align 4 |
| %alloca.i8 = bitcast [1000 x i32]* %alloca to i8* |
| call void @llvm.memset.p0i8.i64(i8* nonnull align 4 dereferenceable(4000) %alloca.i8, i8 0, i64 4000, i1 false) |
| %begin = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* %arg, i64 0, i64 0 |
| %end = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* %arg, i64 0, i64 1000 |
| br label %loop |
| |
| loop: ; preds = %loop, %start |
| %current = phi [1000 x i32]* [ %begin, %start ], [ %next, %loop ] |
| %current.i8 = bitcast [1000 x i32]* %current to i8* |
| call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 dereferenceable(4000) %current.i8, i8* nonnull align 4 dereferenceable(4000) %alloca.i8, i64 4000, i1 false) |
| %next = getelementptr inbounds [1000 x i32], [1000 x i32]* %current, i64 1 |
| %cond = icmp eq [1000 x i32]* %next, %end |
| br i1 %cond, label %exit, label %loop |
| |
| exit: ; preds = %loop |
| ret void |
| } |
| |
| declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1 immarg) |
| declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg) |