| ; RUN: opt -passes=memcpyopt -S %s -verify-memoryssa | FileCheck %s |
| |
| target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128" |
| |
| @C = external constant [0 x i8] |
| |
| declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) |
| declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1) |
| |
| define void @test_constant(i64 %src_size, ptr %dst, i64 %dst_size, i8 %c) !dbg !5 { |
| ; CHECK-LABEL: @test_constant( |
| ; CHECK-NEXT: [[TMP1:%.*]] = icmp ule i64 [[DST_SIZE:%.*]], [[SRC_SIZE:%.*]], !dbg [[DBG11:![0-9]+]] |
| ; CHECK-NEXT: [[TMP2:%.*]] = sub i64 [[DST_SIZE]], [[SRC_SIZE]], !dbg [[DBG11]] |
| ; CHECK-NEXT: [[TMP3:%.*]] = select i1 [[TMP1]], i64 0, i64 [[TMP2]], !dbg [[DBG11]] |
| ; CHECK-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[DST:%.*]], i64 [[SRC_SIZE]], !dbg [[DBG11]] |
| ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 1 [[TMP4]], i8 [[C:%.*]], i64 [[TMP3]], i1 false), !dbg [[DBG11]] |
| ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[DST]], ptr @C, i64 [[SRC_SIZE]], i1 false), !dbg [[DBG12:![0-9]+]] |
| ; CHECK-NEXT: ret void, !dbg [[DBG13:![0-9]+]] |
| ; |
| call void @llvm.memset.p0.i64(ptr %dst, i8 %c, i64 %dst_size, i1 false), !dbg !11 |
| call void @llvm.memcpy.p0.p0.i64(ptr %dst, ptr @C, i64 %src_size, i1 false), !dbg !12 |
| ret void, !dbg !13 |
| } |
| |
| ; Validate that the memset is mapped to DILocation for the original memset. |
| ; CHECK: [[DBG11]] = !DILocation(line: 1, |
| ; CHECK: [[DBG12]] = !DILocation(line: 2, |
| ; CHECK: [[DBG13]] = !DILocation(line: 3, |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.debugify = !{!2, !3} |
| !llvm.module.flags = !{!4} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug) |
| !1 = !DIFile(filename: "memset-memcpy-dbgloc.ll", directory: "/") |
| !2 = !{i32 3} |
| !3 = !{i32 1} |
| !4 = !{i32 2, !"Debug Info Version", i32 3} |
| !5 = distinct !DISubprogram(name: "test_constant", linkageName: "test_constant", scope: null, file: !1, line: 1, type: !6, scopeLine: 1, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !8) |
| !6 = !DISubroutineType(types: !7) |
| !7 = !{} |
| !8 = !{!9} |
| !9 = !DILocalVariable(name: "1", scope: !5, file: !1, line: 3, type: !10) |
| !10 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned) |
| !11 = !DILocation(line: 1, column: 1, scope: !5) |
| !12 = !DILocation(line: 2, column: 1, scope: !5) |
| !13 = !DILocation(line: 3, column: 1, scope: !5) |
