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1## Test mips32:2# RUN: llc -emit-call-site-info -start-after=machineverifier -filetype=obj -mtriple=mips-linux-gnu %s -o -| llvm-dwarfdump -| FileCheck %s3## Test mipsel:4# RUN: llc -emit-call-site-info -start-after=machineverifier -filetype=obj -mtriple=mipsel-linux-gnu %s -o -| llvm-dwarfdump -| FileCheck %s5 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=machineverifier14## Check that call site interpretation analysis can interpret calls with delay slot and15## parameters set outside and inside of the call delay slot.16 17## Test mips32:18# CHECK: DW_TAG_GNU_call_site19# CHECK-NEXT: DW_AT_abstract_origin {{.*}} "sum"20# CHECK-NEXT: DW_AT_low_pc21# CHECK-EMPTY:22## Parameter forwarding register A1_64 is set in call delay slot.23# CHECK-NEXT: DW_TAG_GNU_call_site_parameter24# 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_parameter28# 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 nounwind37 define dso_local void @set(ptr nocapture %adr, i32 signext %val) local_unnamed_addr !dbg !12 {38 entry:39 call void @llvm.dbg.value(metadata ptr %adr, metadata !17, metadata !DIExpression()), !dbg !1940 call void @llvm.dbg.value(metadata i32 %val, metadata !18, metadata !DIExpression()), !dbg !1941 %inc = add nsw i32 %val, 1, !dbg !1942 call void @llvm.dbg.value(metadata i32 %inc, metadata !18, metadata !DIExpression()), !dbg !1943 %call = tail call i32 @sum(i32 signext %inc, i32 signext %inc), !dbg !1944 %add = add nsw i32 %call, %inc, !dbg !1945 store i32 %add, ptr %adr, align 4, !dbg !1946 ret void47 }48 declare !dbg !4 dso_local i32 @sum(i32 signext, i32 signext) local_unnamed_addr49 ; Function Attrs: nounwind readnone speculatable willreturn50 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: set80alignment: 481stack: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 !1998 DBG_VALUE $a1, $noreg, !18, !DIExpression(), debug-location !1999 DBG_VALUE $a1, $noreg, !18, !DIExpression(), debug-location !19100 $sp = ADDiu $sp, -32101 CFI_INSTRUCTION def_cfa_offset 32102 SW killed $ra, $sp, 28 :: (store (s32) into %stack.0)103 SW killed $s1, $sp, 24 :: (store (s32) into %stack.1)104 SW killed $s0, $sp, 20 :: (store (s32) into %stack.2)105 CFI_INSTRUCTION offset $ra_64, -4106 CFI_INSTRUCTION offset $s1_64, -8107 CFI_INSTRUCTION offset $s0_64, -12108 $s0 = OR $a0, $zero109 DBG_VALUE $s0, $noreg, !17, !DIExpression(), debug-location !19110 renamable $s1 = nsw ADDiu killed renamable $a1, 1, debug-location !19111 DBG_VALUE $s1, $noreg, !18, !DIExpression(), debug-location !19112 $a0 = OR $s1, $zero, debug-location !19113 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 !19115 }116 renamable $at = nsw ADDu killed renamable $v0, killed renamable $s1, debug-location !19117 SW killed renamable $at, killed renamable $s0, 0, debug-location !19 :: (store (s32) into %ir.adr)118 $s0 = LW $sp, 20119 DBG_VALUE $a0, $noreg, !17, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !19120 $s1 = LW $sp, 24121 $ra = LW $sp, 28122 PseudoReturn undef $ra {123 $sp = ADDiu $sp, 32124 }125 126...127 128