1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2 ; dbg.value instrinsics should not affect peephole combining of stacksave/stackrestore.
4 ; RUN: opt -instcombine %s -S | FileCheck %s
6 declare i8* @llvm.stacksave() #0
7 declare void @llvm.stackrestore(i8*) #0
9 define i32* @test1(i32 %P) !dbg !6 {
10 ; CHECK-LABEL: @test1(
11 ; CHECK-NEXT: [[TMP1:%.*]] = zext i32 [[P:%.*]] to i64, !dbg !12
12 ; CHECK-NEXT: [[A:%.*]] = alloca i32, i64 [[TMP1]], align 4, !dbg !12
13 ; CHECK-NEXT: call void @llvm.dbg.value(metadata i32* [[A]], metadata !11, metadata !DIExpression()), !dbg !12
14 ; CHECK-NEXT: ret i32* [[A]], !dbg !13
16 %tmp = call i8* @llvm.stacksave(), !dbg !12
17 call void @llvm.dbg.value(metadata i8* %tmp, metadata !9, metadata !DIExpression()), !dbg !12
18 call void @llvm.stackrestore(i8* %tmp), !dbg !13
19 %A = alloca i32, i32 %P, !dbg !14
20 call void @llvm.dbg.value(metadata i32* %A, metadata !11, metadata !DIExpression()), !dbg !14
24 declare void @llvm.dbg.value(metadata, metadata, metadata) #1
25 attributes #0 = { nounwind }
26 attributes #1 = { nounwind readnone speculatable }
29 !llvm.debugify = !{!3, !4}
30 !llvm.module.flags = !{!5}
32 !0 = distinct !DICompileUnit(language: DW_LANG_C, file: !1, producer: "debugify", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
33 !1 = !DIFile(filename: "patatino.ll", directory: "/")
37 !5 = !{i32 2, !"Debug Info Version", i32 3}
38 !6 = distinct !DISubprogram(name: "test1", linkageName: "test1", scope: null, file: !1, line: 1, type: !7, isLocal: false, isDefinition: true, scopeLine: 1, isOptimized: true, unit: !0, retainedNodes: !8)
39 !7 = !DISubroutineType(types: !2)
41 !9 = !DILocalVariable(name: "1", scope: !6, file: !1, line: 1, type: !10)
42 !10 = !DIBasicType(name: "ty64", size: 64, encoding: DW_ATE_unsigned)
43 !11 = !DILocalVariable(name: "2", scope: !6, file: !1, line: 3, type: !10)
44 !12 = !DILocation(line: 1, column: 1, scope: !6)
45 !13 = !DILocation(line: 2, column: 1, scope: !6)
46 !14 = !DILocation(line: 3, column: 1, scope: !6)
47 !15 = !DILocation(line: 4, column: 1, scope: !6)