1 ; RUN: llc < %s | FileCheck %s 2 ; RUN: llc < %s -filetype=obj | llvm-dwarfdump - | FileCheck %s --check-prefix=DWARF 3 4 ; This test creates two UserValues in LiveDebugVariables with one location 5 ; each. x must be spilled, but y will be allocated to a CSR. x's location 6 ; should be indirect, but y's should be direct. 7 8 ; C source: 9 ; #define FORCE_SPILL() \ 10 ; __asm volatile("" : : : \ 11 ; "rax", "rbx", "rcx", "rdx", "rsi", "rdi", "rbp", "r8", \ 12 ; "r9", "r10", "r11", "r12", "r13", "r14", "r15") 13 ; int g(int); 14 ; int f() { 15 ; int x = g(0); 16 ; FORCE_SPILL(); 17 ; int y = g(0); 18 ; g(y); 19 ; g(y); 20 ; g(y); 21 ; return x + y; 22 ; } 23 24 ; CHECK-LABEL: f: # @f 25 ; CHECK: callq g 26 ; CHECK: movl %eax, [[X_OFFS:[0-9]+]](%rsp) # 4-byte Spill 27 ; CHECK: #DEBUG_VALUE: f:x <- [DW_OP_plus_uconst [[X_OFFS]]] [$rsp+0] 28 ; CHECK: #APP 29 ; CHECK: #NO_APP 30 ; CHECK: callq g 31 ; CHECK: movl %eax, %[[CSR:[^ ]*]] 32 ; CHECK: #DEBUG_VALUE: f:y <- $esi 33 ; CHECK: movl %eax, %ecx 34 ; CHECK: callq g 35 ; CHECK: movl %[[CSR]], %ecx 36 ; CHECK: callq g 37 ; CHECK: movl %[[CSR]], %ecx 38 ; CHECK: callq g 39 ; CHECK: movl [[X_OFFS]](%rsp), %eax # 4-byte Reload 40 ; CHECK: #DEBUG_VALUE: f:x <- $eax 41 ; CHECK: addl %[[CSR]], %eax 42 43 ; DWARF: DW_TAG_variable 44 ; DWARF-NEXT: DW_AT_location ( 45 ; DWARF-NEXT: [{{.*}}, {{.*}}): DW_OP_breg7 RSP+36 46 ; DWARF-NEXT: [{{.*}}, {{.*}}): DW_OP_reg0 RAX) 47 ; DWARF-NEXT: DW_AT_name ("x") 48 49 ; DWARF: DW_TAG_variable 50 ; DWARF-NEXT: DW_AT_location ( 51 ; DWARF-NEXT: [{{.*}}, {{.*}}): DW_OP_reg4 RSI) 52 ; DWARF-NEXT: DW_AT_name ("y") 53 54 ; ModuleID = 'spill-nospill.c' 55 source_filename = "spill-nospill.c" 56 target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128" 57 target triple = "x86_64-pc-windows-msvc19.0.24215" 58 59 ; Function Attrs: nounwind uwtable 60 define i32 @f() local_unnamed_addr #0 !dbg !8 { 61 entry: 62 %call = tail call i32 @g(i32 0) #3, !dbg !15 63 tail call void @llvm.dbg.value(metadata i32 %call, metadata !13, metadata !DIExpression()), !dbg !16 64 tail call void asm sideeffect "", "~{rax},~{rbx},~{rcx},~{rdx},~{rsi},~{rdi},~{rbp},~{r8},~{r9},~{r10},~{r11},~{r12},~{r13},~{r14},~{r15},~{dirflag},~{fpsr},~{flags}"() #3, !dbg !17, !srcloc !18 65 %call1 = tail call i32 @g(i32 0) #3, !dbg !19 66 tail call void @llvm.dbg.value(metadata i32 %call1, metadata !14, metadata !DIExpression()), !dbg !20 67 %call2 = tail call i32 @g(i32 %call1) #3, !dbg !21 68 %call3 = tail call i32 @g(i32 %call1) #3, !dbg !22 69 %call4 = tail call i32 @g(i32 %call1) #3, !dbg !23 70 %add = add nsw i32 %call1, %call, !dbg !24 71 ret i32 %add, !dbg !25 72 } 73 74 declare i32 @g(i32) local_unnamed_addr #1 75 76 ; Function Attrs: nounwind readnone speculatable 77 declare void @llvm.dbg.value(metadata, metadata, metadata) #2 78 79 attributes #0 = { nounwind uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } 80 attributes #1 = { "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" } 81 attributes #2 = { nounwind readnone speculatable } 82 attributes #3 = { nounwind } 83 84 !llvm.dbg.cu = !{!0} 85 !llvm.module.flags = !{!3, !4, !5, !6} 86 !llvm.ident = !{!7} 87 88 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0 ", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2) 89 !1 = !DIFile(filename: "spill-nospill.c", directory: "C:\5Csrc\5Cllvm-project\5Cbuild") 90 !2 = !{} 91 !3 = !{i32 2, !"Dwarf Version", i32 4} 92 !4 = !{i32 2, !"Debug Info Version", i32 3} 93 !5 = !{i32 1, !"wchar_size", i32 2} 94 !6 = !{i32 7, !"PIC Level", i32 2} 95 !7 = !{!"clang version 6.0.0 "} 96 !8 = distinct !DISubprogram(name: "f", scope: !1, file: !1, line: 8, type: !9, isLocal: false, isDefinition: true, scopeLine: 8, isOptimized: true, unit: !0, retainedNodes: !12) 97 !9 = !DISubroutineType(types: !10) 98 !10 = !{!11} 99 !11 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 100 !12 = !{!13, !14} 101 !13 = !DILocalVariable(name: "x", scope: !8, file: !1, line: 9, type: !11) 102 !14 = !DILocalVariable(name: "y", scope: !8, file: !1, line: 11, type: !11) 103 !15 = !DILocation(line: 9, column: 11, scope: !8) 104 !16 = !DILocation(line: 9, column: 7, scope: !8) 105 !17 = !DILocation(line: 10, column: 3, scope: !8) 106 !18 = !{i32 -2147472112} 107 !19 = !DILocation(line: 11, column: 11, scope: !8) 108 !20 = !DILocation(line: 11, column: 7, scope: !8) 109 !21 = !DILocation(line: 12, column: 3, scope: !8) 110 !22 = !DILocation(line: 13, column: 3, scope: !8) 111 !23 = !DILocation(line: 14, column: 3, scope: !8) 112 !24 = !DILocation(line: 15, column: 12, scope: !8) 113 !25 = !DILocation(line: 15, column: 3, scope: !8) 114
