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1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --check-globals all --version 62; RUN: opt -passes=instcombine -S < %s | FileCheck %s3 4target 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"5 6declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind7 8; Verify that instcombine preserves TBAA tags when converting a memcpy into9; a scalar load and store.10 11%struct.test1 = type { float }12 13define void @test1(ptr nocapture %a, ptr nocapture %b) {14; CHECK-LABEL: define void @test1(15; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr captures(none) [[B:%.*]]) {16; CHECK-NEXT: [[ENTRY:.*:]]17; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[B]], align 4, !tbaa [[FLOAT_TBAA0:![0-9]+]]18; CHECK-NEXT: store i32 [[TMP0]], ptr [[A]], align 4, !tbaa [[FLOAT_TBAA0]]19; CHECK-NEXT: ret void20;21entry:22 tail call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 %b, i64 4, i1 false), !tbaa.struct !323 ret void24}25 26%struct.test2 = type { ptr }27 28define ptr @test2() {29; CHECK-LABEL: define ptr @test2() {30; CHECK-NEXT: store i1 true, ptr poison, align 131; CHECK-NEXT: ret ptr poison32;33 %tmp = alloca %struct.test2, align 834 call void @llvm.memcpy.p0.p0.i64(ptr align 8 %tmp, ptr align 8 undef, i64 8, i1 false), !tbaa.struct !435 %tmp3 = load ptr, ptr %tmp36 ret ptr %tmp37}38 39define void @test3_multiple_fields(ptr nocapture %a, ptr nocapture %b) {40; CHECK-LABEL: define void @test3_multiple_fields(41; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr captures(none) [[B:%.*]]) {42; CHECK-NEXT: [[ENTRY:.*:]]43; CHECK-NEXT: [[TMP0:%.*]] = load i64, ptr [[B]], align 444; CHECK-NEXT: store i64 [[TMP0]], ptr [[A]], align 445; CHECK-NEXT: ret void46;47entry:48 tail call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 %b, i64 8, i1 false), !tbaa.struct !649 ret void50}51 52define void @test4_multiple_copy_first_field(ptr nocapture %a, ptr nocapture %b) {53; CHECK-LABEL: define void @test4_multiple_copy_first_field(54; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr captures(none) [[B:%.*]]) {55; CHECK-NEXT: [[ENTRY:.*:]]56; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[B]], align 4, !tbaa [[FLOAT_TBAA0]]57; CHECK-NEXT: store i32 [[TMP0]], ptr [[A]], align 4, !tbaa [[FLOAT_TBAA0]]58; CHECK-NEXT: ret void59;60entry:61 tail call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 %b, i64 4, i1 false), !tbaa.struct !662 ret void63}64 65define void @test5_multiple_copy_more_than_first_field(ptr nocapture %a, ptr nocapture %b) {66; CHECK-LABEL: define void @test5_multiple_copy_more_than_first_field(67; CHECK-SAME: ptr captures(none) [[A:%.*]], ptr captures(none) [[B:%.*]]) {68; CHECK-NEXT: [[ENTRY:.*:]]69; CHECK-NEXT: [[TMP0:%.*]] = load i32, ptr [[B]], align 470; CHECK-NEXT: store i32 [[TMP0]], ptr [[A]], align 471; CHECK-NEXT: ret void72;73entry:74 tail call void @llvm.memcpy.p0.p0.i64(ptr align 4 %a, ptr align 4 %b, i64 4, i1 false), !tbaa.struct !775 ret void76}77 78!0 = !{!"Simple C/C++ TBAA"}79!1 = !{!"omnipotent char", !0}80!2 = !{!5, !5, i64 0}81!3 = !{i64 0, i64 4, !2}82!4 = !{i64 0, i64 8, null}83!5 = !{!"float", !0}84!6 = !{i64 0, i64 4, !2, i64 4, i64 4, !2}85!7 = !{i64 0, i64 2, !2, i64 4, i64 6, !2}86 87;.88; CHECK: attributes #[[ATTR0:[0-9]+]] = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }89;.90; CHECK: [[FLOAT_TBAA0]] = !{[[META1:![0-9]+]], [[META1]], i64 0}91; CHECK: [[META1]] = !{!"float", [[META2:![0-9]+]]}92; CHECK: [[META2]] = !{!"Simple C/C++ TBAA"}93;.94