1; RUN: llc -O3 -stop-after virtregrewriter %s -o - | FileCheck %s 2 3target datalayout = "E-m:e-i64:64-n32:64" 4target triple = "ppc64" 5 6; Verify that live-debug-variables includes the stack slot offset 7; for the sub-register in the debug expression for `spilled'. 8 9; This reproducer was generated from the following C file: 10; 11; extern int foo(void); 12; extern void bar(int); 13; 14; int main() { 15; int spilled = foo(); 16; 17; // Clobber all GPRs. 18; __asm volatile ("" : : : "0", "1", "2", "3", "4", "5", "6", "7", 19; "8", "9", "10", "11", "12", "13", "14", "15", 20; "16", "17", "18", "19", "20", "21", "22", "23", 21; "24", "25", "26", "27", "28", "29", "30", "31"); 22; 23; for(;;) 24; bar(spilled); 25; 26; return 0; 27; } 28; 29; compiled using: 30; 31; clang --target=ppc64 -O3 -g -S -emit-llvm 32 33; CHECK: ![[VAR:.*]] = !DILocalVariable(name: "spilled" 34 35; CHECK: STD $x3, 0, %stack.0 36; CHECK-NEXT: DBG_VALUE %stack.0, 0, ![[VAR]], !DIExpression(DW_OP_plus_uconst, 4) 37 38; Function Attrs: noreturn nounwind 39define signext i32 @main() local_unnamed_addr #0 !dbg !8 { 40entry: 41 %call = tail call signext i32 @foo() #2, !dbg !14 42 call void @llvm.dbg.value(metadata i32 %call, metadata !13, metadata !DIExpression()), !dbg !14 43 tail call void asm sideeffect "", "~{r0},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{r16},~{r17},~{r18},~{r19},~{r20},~{r21},~{r22},~{r23},~{r24},~{r25},~{r26},~{r27},~{r28},~{r29},~{r30},~{r31}"() #2, !dbg !14, !srcloc !15 44 br label %for.cond, !dbg !14 45 46for.cond: ; preds = %for.cond, %entry 47 tail call void @bar(i32 signext %call) #2, !dbg !14 48 br label %for.cond, !dbg !14 49} 50 51declare signext i32 @foo() local_unnamed_addr 52 53declare void @bar(i32 signext) local_unnamed_addr 54 55; Function Attrs: nounwind readnone speculatable 56declare void @llvm.dbg.value(metadata, metadata, metadata) #1 57 58attributes #0 = { noreturn nounwind } 59attributes #1 = { nounwind readnone speculatable } 60attributes #2 = { nounwind } 61 62!llvm.dbg.cu = !{!0} 63!llvm.module.flags = !{!3, !4, !5, !6} 64!llvm.ident = !{!7} 65 66!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 8.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) 67!1 = !DIFile(filename: "live-debug-vars-subreg-offset.c", directory: "/") 68!2 = !{} 69!3 = !{i32 2, !"Dwarf Version", i32 4} 70!4 = !{i32 2, !"Debug Info Version", i32 3} 71!5 = !{i32 1, !"wchar_size", i32 4} 72!6 = !{i32 7, !"PIC Level", i32 2} 73!7 = !{!"clang version 8.0.0"} 74!8 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 4, type: !9, isLocal: false, isDefinition: true, scopeLine: 4, isOptimized: true, unit: !0, retainedNodes: !12) 75!9 = !DISubroutineType(types: !10) 76!10 = !{!11} 77!11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 78!12 = !{!13} 79!13 = !DILocalVariable(name: "spilled", scope: !8, file: !1, line: 5, type: !11) 80!14 = !DILocation(line: 5, column: 17, scope: !8) 81!15 = !{i32 125} 82