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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 42; RUN: opt < %s -passes=memcpyopt,instcombine -S -verify-memoryssa | FileCheck --check-prefix=CUSTOM %s3; RUN: opt < %s -O2 -S | FileCheck --check-prefix=O2 %s4 5; Check that we eliminate all `memcpy` calls in this function.6define void @memcpy_forward_back_with_offset(ptr %arg) {7; CUSTOM-LABEL: define void @memcpy_forward_back_with_offset(8; CUSTOM-SAME: ptr [[ARG:%.*]]) {9; CUSTOM-NEXT: store i8 1, ptr [[ARG]], align 110; CUSTOM-NEXT: ret void11;12; O2-LABEL: define void @memcpy_forward_back_with_offset(13; O2-SAME: ptr writeonly captures(none) initializes((0, 1)) [[ARG:%.*]]) local_unnamed_addr #[[ATTR0:[0-9]+]] {14; O2-NEXT: store i8 1, ptr [[ARG]], align 115; O2-NEXT: ret void16;17 %i = alloca [753 x i8], align 118 %i1 = alloca [754 x i8], align 119 call void @llvm.memcpy.p0.p0.i64(ptr %i1, ptr %arg, i64 754, i1 false)20 %i2 = getelementptr inbounds i8, ptr %i1, i64 121 call void @llvm.memcpy.p0.p0.i64(ptr %i, ptr %i2, i64 753, i1 false)22 store i8 1, ptr %arg, align 123 %i3 = getelementptr inbounds i8, ptr %arg, i64 124 call void @llvm.memcpy.p0.p0.i64(ptr %i3, ptr %i, i64 753, i1 false)25 ret void26}27 28declare void @llvm.memcpy.p0.p0.i64(ptr, ptr, i64, i1)29