1; RUN: opt -passes=sroa -S %s -o - \ 2; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg" 3; RUN: opt --try-experimental-debuginfo-iterators -passes=sroa -S %s -o - \ 4; RUN: | FileCheck %s --implicit-check-not="call void @llvm.dbg" 5 6;; Check that a dbg.assign for a promoted variable becomes a kill location if 7;; it used a fragment that can't be split (the first check directive below). 8;; NOTE: If createFragmentExpression gets smarter it may be necessary to create 9;; a new test case. 10;; In some cases a dbg.assign with a poison value is replaced with a non-poison 11;; value. This needs reworking, but as a stop-gap we need to ensure this 12;; doesn't cause invalid expressions to be created. Check we don't do it when 13;; the expression uses more than one location operand (DW_OP_arg n). 14 15; CHECK: if.then: 16; CHECK: #dbg_value(i32 poison, ![[#]], !DIExpression(DW_OP_LLVM_fragment, 0, 32), 17;; FIXME: The value below should be poison. See https://reviews.llvm.org/D147431#4245260. 18; CHECK: #dbg_value(i32 %{{.*}}, ![[#]], !DIExpression(DW_OP_LLVM_fragment, 32, 32), 19 20; CHECK: if.else: 21; CHECK: #dbg_value(i32 2, ![[#]], !DIExpression(DW_OP_LLVM_fragment, 0, 32), 22; CHECK: #dbg_value(i32 0, ![[#]], !DIExpression(DW_OP_LLVM_fragment, 32, 32), 23 24; CHECK: if.inner: 25; CHECK: #dbg_value(i32 poison, ![[#]], !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_stack_value), 26 27; CHECK: end: 28; CHECK: #dbg_value(i32 %{{.*}}, ![[#]], !DIExpression(DW_OP_LLVM_fragment, 0, 32), 29 30declare i64 @get_i64() 31 32define internal fastcc i64 @fun() !dbg !18 { 33entry: 34 %codepoint = alloca i64, align 4, !DIAssignID !27 35 call void @llvm.dbg.assign(metadata i1 poison, metadata !15, metadata !DIExpression(), metadata !27, metadata ptr %codepoint, metadata !DIExpression()), !dbg !26 36 %0 = call i64 @get_i64() #2 37 %1 = add i64 %0, 1 38 %cmp = icmp ugt i64 %1, 100 39 br i1 %cmp, label %if.then, label %if.else 40 41if.then: 42 store i64 %1, ptr %codepoint, align 4, !DIAssignID !25 43 call void @llvm.dbg.assign(metadata i64 %1, metadata !15, metadata !DIExpression(DW_OP_plus_uconst, 1, DW_OP_stack_value), metadata !25, metadata ptr %codepoint, metadata !DIExpression()), !dbg !26 44 br label %end 45 46if.else: 47 store i64 2, ptr %codepoint, align 4, !DIAssignID !28 48 call void @llvm.dbg.assign(metadata i32 2, metadata !15, metadata !DIExpression(), metadata !28, metadata ptr %codepoint, metadata !DIExpression()), !dbg !26 49 br i1 %cmp, label %end, label %if.inner 50 51if.inner: 52 store i32 3, ptr %codepoint, align 4, !DIAssignID !29 53 call void @llvm.dbg.assign(metadata i32 poison, metadata !15, metadata !DIExpression(DW_OP_LLVM_arg, 0, DW_OP_LLVM_arg, 1, DW_OP_plus, DW_OP_stack_value), metadata !29, metadata ptr %codepoint, metadata !DIExpression()), !dbg !26 54 br label %end 55 56end: 57 %r = load i32, ptr %codepoint 58 %rr = zext i32 %r to i64 59 ret i64 %rr 60} 61 62declare void @llvm.dbg.assign(metadata, metadata, metadata, metadata, metadata, metadata) 63 64!llvm.dbg.cu = !{!0} 65!llvm.module.flags = !{!13, !14} 66 67!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 17.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !2, imports: !2, splitDebugInlining: false, nameTableKind: None) 68!1 = !DIFile(filename: "reduce.cpp", directory: "/") 69!2 = !{} 70!13 = !{i32 2, !"Debug Info Version", i32 3} 71!14 = !{i32 7, !"debug-info-assignment-tracking", i1 true} 72!15 = !DILocalVariable(name: "codepoint", scope: !18, file: !1, line: 10, type: !24) 73!18 = distinct !DISubprogram(name: "fun", linkageName: "fun", scope: !1, file: !1, line: 4, type: !19, scopeLine: 4, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2) 74!19 = distinct !DISubroutineType(types: !2) 75!24 = !DIBasicType(name: "long unsigned int", size: 64, encoding: DW_ATE_unsigned) 76!25 = distinct !DIAssignID() 77!26 = !DILocation(line: 0, scope: !18) 78!27 = distinct !DIAssignID() 79!28 = distinct !DIAssignID() 80!29 = distinct !DIAssignID() 81