1## Test mips32: 2# RUN: llc -emit-call-site-info -start-after=machineverifier -filetype=obj -mtriple=mips-linux-gnu %s -o -| llvm-dwarfdump -| FileCheck %s 3## Test mipsel: 4# RUN: llc -emit-call-site-info -start-after=machineverifier -filetype=obj -mtriple=mipsel-linux-gnu %s -o -| llvm-dwarfdump -| FileCheck %s 5 6## Built from source: 7## extern int __attribute__((noinline)) sum(int a, int b); 8## void __attribute__((noinline)) set(int *adr, int val) { 9## val++; 10## *adr = val + sum(val, val); 11## } 12## Using command: 13## clang -g -O2 -target mips-linux-gnu m.c -c -mllvm -stop-before=machineverifier 14## Check that call site interpretation analysis can interpret calls with delay slot and 15## parameters set outside and inside of the call delay slot. 16 17## Test mips32: 18# CHECK: DW_TAG_GNU_call_site 19# CHECK-NEXT: DW_AT_abstract_origin {{.*}} "sum" 20# CHECK-NEXT: DW_AT_low_pc 21# CHECK-EMPTY: 22## Parameter forwarding register A1_64 is set in call delay slot. 23# CHECK-NEXT: DW_TAG_GNU_call_site_parameter 24# CHECK-NEXT: DW_AT_location (DW_OP_reg5 A1_64) 25# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg17 S1_64+0) 26# CHECK-EMPTY: 27# CHECK-NEXT: DW_TAG_GNU_call_site_parameter 28# CHECK-NEXT: DW_AT_location (DW_OP_reg4 A0_64) 29# CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg17 S1_64+0) 30 31--- | 32 ; ModuleID = 'm.ll' 33 source_filename = "m.c" 34 target datalayout = "E-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64" 35 target triple = "mips-unknown-linux-gnu" 36 ; Function Attrs: noinline nounwind 37 define dso_local void @set(i32* nocapture %adr, i32 signext %val) local_unnamed_addr !dbg !12 { 38 entry: 39 call void @llvm.dbg.value(metadata i32* %adr, metadata !17, metadata !DIExpression()), !dbg !19 40 call void @llvm.dbg.value(metadata i32 %val, metadata !18, metadata !DIExpression()), !dbg !19 41 %inc = add nsw i32 %val, 1, !dbg !19 42 call void @llvm.dbg.value(metadata i32 %inc, metadata !18, metadata !DIExpression()), !dbg !19 43 %call = tail call i32 @sum(i32 signext %inc, i32 signext %inc), !dbg !19 44 %add = add nsw i32 %call, %inc, !dbg !19 45 store i32 %add, i32* %adr, align 4, !dbg !19 46 ret void 47 } 48 declare !dbg !4 dso_local i32 @sum(i32 signext, i32 signext) local_unnamed_addr 49 ; Function Attrs: nounwind readnone speculatable willreturn 50 declare void @llvm.dbg.value(metadata, metadata, metadata) 51 52 !llvm.dbg.cu = !{!0} 53 !llvm.module.flags = !{!8, !9, !10} 54 !llvm.ident = !{!11} 55 56 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 11.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, splitDebugInlining: false, nameTableKind: None) 57 !1 = !DIFile(filename: "m.c", directory: "/dir") 58 !2 = !{} 59 !3 = !{!4} 60 !4 = !DISubprogram(name: "sum", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) 61 !5 = !DISubroutineType(types: !6) 62 !6 = !{!7, !7, !7} 63 !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) 64 !8 = !{i32 7, !"Dwarf Version", i32 4} 65 !9 = !{i32 2, !"Debug Info Version", i32 3} 66 !10 = !{i32 1, !"wchar_size", i32 4} 67 !11 = !{!"clang version 11.0.0"} 68 !12 = distinct !DISubprogram(name: "set", scope: !1, file: !1, line: 2, type: !13, scopeLine: 2, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !16) 69 !13 = !DISubroutineType(types: !14) 70 !14 = !{null, !15, !7} 71 !15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 32) 72 !16 = !{!17, !18} 73 !17 = !DILocalVariable(name: "adr", arg: 1, scope: !12, file: !1, line: 2, type: !15) 74 !18 = !DILocalVariable(name: "val", arg: 2, scope: !12, file: !1, line: 2, type: !7) 75 !19 = !DILocation(line: 0, scope: !12) 76 77... 78--- 79name: set 80alignment: 4 81stack: 82 - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4, 83 stack-id: default, callee-saved-register: '$ra', callee-saved-restored: true, 84 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 85 - { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4, 86 stack-id: default, callee-saved-register: '$s1', callee-saved-restored: true, 87 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 88 - { id: 2, name: '', type: spill-slot, offset: -12, size: 4, alignment: 4, 89 stack-id: default, callee-saved-register: '$s0', callee-saved-restored: true, 90 debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } 91callSites: 92 - { bb: 0, offset: 16, fwdArgRegs: 93 - { arg: 0, reg: '$a0' } 94 - { arg: 1, reg: '$a1' } } 95body: | 96 bb.0.entry: 97 DBG_VALUE $a0, $noreg, !17, !DIExpression(), debug-location !19 98 DBG_VALUE $a1, $noreg, !18, !DIExpression(), debug-location !19 99 DBG_VALUE $a1, $noreg, !18, !DIExpression(), debug-location !19 100 $sp = ADDiu $sp, -32 101 CFI_INSTRUCTION def_cfa_offset 32 102 SW killed $ra, $sp, 28 :: (store 4 into %stack.0) 103 SW killed $s1, $sp, 24 :: (store 4 into %stack.1) 104 SW killed $s0, $sp, 20 :: (store 4 into %stack.2) 105 CFI_INSTRUCTION offset $ra_64, -4 106 CFI_INSTRUCTION offset $s1_64, -8 107 CFI_INSTRUCTION offset $s0_64, -12 108 $s0 = OR $a0, $zero 109 DBG_VALUE $s0, $noreg, !17, !DIExpression(), debug-location !19 110 renamable $s1 = nsw ADDiu killed renamable $a1, 1, debug-location !19 111 DBG_VALUE $s1, $noreg, !18, !DIExpression(), debug-location !19 112 $a0 = OR $s1, $zero, debug-location !19 113 JAL @sum, csr_o32, implicit-def dead $ra, implicit $a0, implicit $a1, implicit-def $sp, implicit-def $v0, debug-location !19 { 114 $a1 = OR $s1, $zero, debug-location !19 115 } 116 renamable $at = nsw ADDu killed renamable $v0, killed renamable $s1, debug-location !19 117 SW killed renamable $at, killed renamable $s0, 0, debug-location !19 :: (store 4 into %ir.adr) 118 $s0 = LW $sp, 20 119 DBG_VALUE $a0, $noreg, !17, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !19 120 $s1 = LW $sp, 24 121 $ra = LW $sp, 28 122 PseudoReturn undef $ra { 123 $sp = ADDiu $sp, 32 124 } 125 126... 127 128