1 ; RUN: opt -passes=memcpyopt -S %s -verify-memoryssa | FileCheck %s
3 target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
5 @C = external constant [0 x i8]
7 declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1)
8 declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture readonly, i64, i1)
10 define void @test_constant(i64 %src_size, ptr %dst, i64 %dst_size, i8 %c) !dbg !5 {
11 ; CHECK-LABEL: @test_constant(
12 ; CHECK-NEXT: [[TMP1:%.*]] = icmp ule i64 [[DST_SIZE:%.*]], [[SRC_SIZE:%.*]], !dbg [[DBG11:![0-9]+]]
13 ; CHECK-NEXT: [[TMP2:%.*]] = sub i64 [[DST_SIZE]], [[SRC_SIZE]], !dbg [[DBG11]]
14 ; CHECK-NEXT: [[TMP3:%.*]] = select i1 [[TMP1]], i64 0, i64 [[TMP2]], !dbg [[DBG11]]
15 ; CHECK-NEXT: [[TMP4:%.*]] = getelementptr i8, ptr [[DST:%.*]], i64 [[SRC_SIZE]], !dbg [[DBG11]]
16 ; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 1 [[TMP4]], i8 [[C:%.*]], i64 [[TMP3]], i1 false), !dbg [[DBG11]]
17 ; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr [[DST]], ptr @C, i64 [[SRC_SIZE]], i1 false), !dbg [[DBG12:![0-9]+]]
18 ; CHECK-NEXT: ret void, !dbg [[DBG13:![0-9]+]]
20 call void @llvm.memset.p0.i64(ptr %dst, i8 %c, i64 %dst_size, i1 false), !dbg !11
21 call void @llvm.memcpy.p0.p0.i64(ptr %dst, ptr @C, i64 %src_size, i1 false), !dbg !12
25 ; Validate that the memset is mapped to DILocation for the original memset.
26 ; CHECK: [[DBG11]] = !DILocation(line: 1,
27 ; CHECK: [[DBG12]] = !DILocation(line: 2,
28 ; CHECK: [[DBG13]] = !DILocation(line: 3,
31 !llvm.debugify = !{!2, !3}
32 !llvm.module.flags = !{!4}
34 !0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug)
35 !1 = !DIFile(filename: "memset-memcpy-dbgloc.ll", directory: "/")
38 !4 = !{i32 2, !"Debug Info Version", i32 3}
39 !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)
40 !6 = !DISubroutineType(types: !7)
43 !9 = !DILocalVariable(name: "1", scope: !5, file: !1, line: 3, type: !10)
44 !10 = !DIBasicType(name: "ty32", size: 32, encoding: DW_ATE_unsigned)
45 !11 = !DILocation(line: 1, column: 1, scope: !5)
46 !12 = !DILocation(line: 2, column: 1, scope: !5)
47 !13 = !DILocation(line: 3, column: 1, scope: !5)