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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py2; RUN: opt < %s -passes=memcpyopt -S -verify-memoryssa | FileCheck %s3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"4 5define void @test(ptr %src, i8 %c, i64 %size) {6; CHECK-LABEL: @test(7; CHECK-NEXT: [[DST1:%.*]] = alloca i8, i64 [[SIZE:%.*]], align 18; CHECK-NEXT: [[DST2:%.*]] = alloca i8, i64 [[SIZE]], align 19; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[DST1]], i8 [[C:%.*]], i64 [[SIZE]], i1 false)10; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[DST2]], i8 [[C]], i64 [[SIZE]], i1 false)11; CHECK-NEXT: ret void12;13 %dst1 = alloca i8, i64 %size14 %dst2 = alloca i8, i64 %size15 call void @llvm.memset.p0.i64(ptr align 8 %dst1, i8 %c, i64 %size, i1 false)16 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %dst2, ptr align 8 %dst1, i64 %size, i1 false)17 18 ret void19}20 21; Differing sizes, but would be UB if size1 < size2 since the memcpy would reference outside of the first alloca22define void @dynsize_test(ptr %src, i8 %c, i64 %size1, i64 %size2) {23; CHECK-LABEL: @dynsize_test(24; CHECK-NEXT: [[DST1:%.*]] = alloca i8, i64 [[SIZE1:%.*]], align 125; CHECK-NEXT: [[DST2:%.*]] = alloca i8, i64 [[SIZE2:%.*]], align 126; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[DST1]], i8 [[C:%.*]], i64 [[SIZE1]], i1 false)27; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[DST2]], i8 [[C]], i64 [[SIZE2]], i1 false)28; CHECK-NEXT: ret void29;30 %dst1 = alloca i8, i64 %size131 %dst2 = alloca i8, i64 %size232 call void @llvm.memset.p0.i64(ptr align 8 %dst1, i8 %c, i64 %size1, i1 false)33 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %dst2, ptr align 8 %dst1, i64 %size2, i1 false)34 35 ret void36}37 38declare void @llvm.memset.p0.i64(ptr, i8, i64, i1)39declare void @llvm.memcpy.p0.p0.i64(ptr, ptr, i64, i1)40