; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt < %s -passes=memcpyopt -S -verify-memoryssa | FileCheck %s target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" target triple = "x86_64-apple-macosx10.8.0" %struct.foo = type { i8, [7 x i8], i32 } ; Check that the memcpy is removed. define i32 @test1(ptr nocapture %foobie) nounwind noinline ssp uwtable { ; CHECK-LABEL: @test1( ; CHECK-NEXT: [[BLETCH_SROA_1:%.*]] = alloca [7 x i8], align 1 ; CHECK-NEXT: store i8 98, ptr [[FOOBIE:%.*]], align 4 ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], ptr [[FOOBIE]], i64 0, i32 1, i64 0 ; CHECK-NEXT: [[TMP2:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr [[FOOBIE]], i64 0, i32 2 ; CHECK-NEXT: store i32 20, ptr [[TMP2]], align 4 ; CHECK-NEXT: ret i32 undef ; %bletch.sroa.1 = alloca [7 x i8], align 1 store i8 98, ptr %foobie, align 4 %1 = getelementptr inbounds %struct.foo, ptr %foobie, i64 0, i32 1, i64 0 call void @llvm.memcpy.p0.p0.i64(ptr %1, ptr %bletch.sroa.1, i64 7, i1 false) %2 = getelementptr inbounds %struct.foo, ptr %foobie, i64 0, i32 2 store i32 20, ptr %2, align 4 ret i32 undef } ; Check that the memcpy is removed. define void @test2(ptr sret(i8) noalias nocapture %out, ptr %in) nounwind noinline ssp uwtable { ; CHECK-LABEL: @test2( ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[IN:%.*]]) ; CHECK-NEXT: ret void ; call void @llvm.lifetime.start.p0(i64 8, ptr %in) call void @llvm.memcpy.p0.p0.i64(ptr %out, ptr %in, i64 8, i1 false) ret void } ; Check that the memcpy is not removed. define void @test3(ptr sret(i8) noalias nocapture %out, ptr %in) nounwind noinline ssp uwtable { ; CHECK-LABEL: @test3( ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 4, ptr [[IN:%.*]]) ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[OUT:%.*]], ptr [[IN]], i64 8, i1 false) ; CHECK-NEXT: ret void ; call void @llvm.lifetime.start.p0(i64 4, ptr %in) call void @llvm.memcpy.p0.p0.i64(ptr %out, ptr %in, i64 8, i1 false) ret void } ; Check that the memcpy is not removed. define void @test_lifetime_may_alias(ptr %lifetime, ptr %src, ptr %dst) { ; CHECK-LABEL: @test_lifetime_may_alias( ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 8, ptr [[LIFETIME:%.*]]) ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[DST:%.*]], ptr [[SRC:%.*]], i64 8, i1 false) ; CHECK-NEXT: ret void ; call void @llvm.lifetime.start.p0(i64 8, ptr %lifetime) call void @llvm.memcpy.p0.p0.i64(ptr %dst, ptr %src, i64 8, i1 false) ret void } ; lifetime.start on full alloca size, copy in range. define void @test_lifetime_partial_alias_1(ptr noalias %dst) { ; CHECK-LABEL: @test_lifetime_partial_alias_1( ; CHECK-NEXT: [[A:%.*]] = alloca [16 x i8], align 1 ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 16, ptr [[A]]) ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[A]], i64 8 ; CHECK-NEXT: ret void ; %a = alloca [16 x i8] call void @llvm.lifetime.start.p0(i64 16, ptr %a) %gep = getelementptr i8, ptr %a, i64 8 call void @llvm.memcpy.p0.p0.i64(ptr %dst, ptr %gep, i64 8, i1 false) ret void } ; lifetime.start on full alloca size, copy out of range. define void @test_lifetime_partial_alias_2(ptr noalias %dst) { ; CHECK-LABEL: @test_lifetime_partial_alias_2( ; CHECK-NEXT: [[A:%.*]] = alloca [16 x i8], align 1 ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 16, ptr [[A]]) ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[A]], i64 8 ; CHECK-NEXT: ret void ; %a = alloca [16 x i8] call void @llvm.lifetime.start.p0(i64 16, ptr %a) %gep = getelementptr i8, ptr %a, i64 8 call void @llvm.memcpy.p0.p0.i64(ptr %dst, ptr %gep, i64 16, i1 false) ret void } ; lifetime.start on part of alloca, copy in range. define void @test_lifetime_partial_alias_3(ptr noalias %dst) { ; CHECK-LABEL: @test_lifetime_partial_alias_3( ; CHECK-NEXT: [[A:%.*]] = alloca [16 x i8], align 1 ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 12, ptr [[A]]) ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[A]], i64 8 ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[DST:%.*]], ptr [[GEP]], i64 4, i1 false) ; CHECK-NEXT: ret void ; %a = alloca [16 x i8] call void @llvm.lifetime.start.p0(i64 12, ptr %a) %gep = getelementptr i8, ptr %a, i64 8 call void @llvm.memcpy.p0.p0.i64(ptr %dst, ptr %gep, i64 4, i1 false) ret void } ; lifetime.start on part of alloca, copy out of range. define void @test_lifetime_partial_alias_4(ptr noalias %dst) { ; CHECK-LABEL: @test_lifetime_partial_alias_4( ; CHECK-NEXT: [[A:%.*]] = alloca [16 x i8], align 1 ; CHECK-NEXT: call void @llvm.lifetime.start.p0(i64 12, ptr [[A]]) ; CHECK-NEXT: [[GEP:%.*]] = getelementptr i8, ptr [[A]], i64 8 ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[DST:%.*]], ptr [[GEP]], i64 8, i1 false) ; CHECK-NEXT: ret void ; %a = alloca [16 x i8] call void @llvm.lifetime.start.p0(i64 12, ptr %a) %gep = getelementptr i8, ptr %a, i64 8 call void @llvm.memcpy.p0.p0.i64(ptr %dst, ptr %gep, i64 8, i1 false) ret void } declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind declare void @llvm.lifetime.start.p0(i64, ptr nocapture) nounwind