| ## Test mips32: |
| # RUN: llc -emit-call-site-info -start-after=machineverifier -filetype=obj -mtriple=mips-linux-gnu %s -o -| llvm-dwarfdump -| FileCheck %s |
| ## Test mipsel: |
| # RUN: llc -emit-call-site-info -start-after=machineverifier -filetype=obj -mtriple=mipsel-linux-gnu %s -o -| llvm-dwarfdump -| FileCheck %s |
| |
| ## Built from source: |
| ## extern int __attribute__((noinline)) sum(int a, int b); |
| ## void __attribute__((noinline)) set(int *adr, int val) { |
| ## val++; |
| ## *adr = val + sum(val, val); |
| ## } |
| ## Using command: |
| ## clang -g -O2 -target mips-linux-gnu m.c -c -mllvm -stop-before=machineverifier |
| ## Check that call site interpretation analysis can interpret calls with delay slot and |
| ## parameters set outside and inside of the call delay slot. |
| |
| ## Test mips32: |
| # CHECK: DW_TAG_GNU_call_site |
| # CHECK-NEXT: DW_AT_abstract_origin {{.*}} "sum" |
| # CHECK-NEXT: DW_AT_low_pc |
| # CHECK-EMPTY: |
| ## Parameter forwarding register A1_64 is set in call delay slot. |
| # CHECK-NEXT: DW_TAG_GNU_call_site_parameter |
| # CHECK-NEXT: DW_AT_location (DW_OP_reg5 A1_64) |
| # CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg17 S1_64+0) |
| # CHECK-EMPTY: |
| # CHECK-NEXT: DW_TAG_GNU_call_site_parameter |
| # CHECK-NEXT: DW_AT_location (DW_OP_reg4 A0_64) |
| # CHECK-NEXT: DW_AT_GNU_call_site_value (DW_OP_breg17 S1_64+0) |
| |
| --- | |
| ; ModuleID = 'm.ll' |
| source_filename = "m.c" |
| target datalayout = "E-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64" |
| target triple = "mips-unknown-linux-gnu" |
| ; Function Attrs: noinline nounwind |
| define dso_local void @set(i32* nocapture %adr, i32 signext %val) local_unnamed_addr !dbg !12 { |
| entry: |
| call void @llvm.dbg.value(metadata i32* %adr, metadata !17, metadata !DIExpression()), !dbg !19 |
| call void @llvm.dbg.value(metadata i32 %val, metadata !18, metadata !DIExpression()), !dbg !19 |
| %inc = add nsw i32 %val, 1, !dbg !19 |
| call void @llvm.dbg.value(metadata i32 %inc, metadata !18, metadata !DIExpression()), !dbg !19 |
| %call = tail call i32 @sum(i32 signext %inc, i32 signext %inc), !dbg !19 |
| %add = add nsw i32 %call, %inc, !dbg !19 |
| store i32 %add, i32* %adr, align 4, !dbg !19 |
| ret void |
| } |
| declare !dbg !4 dso_local i32 @sum(i32 signext, i32 signext) local_unnamed_addr |
| ; Function Attrs: nounwind readnone speculatable willreturn |
| declare void @llvm.dbg.value(metadata, metadata, metadata) |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!8, !9, !10} |
| !llvm.ident = !{!11} |
| |
| !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) |
| !1 = !DIFile(filename: "m.c", directory: "/dir") |
| !2 = !{} |
| !3 = !{!4} |
| !4 = !DISubprogram(name: "sum", scope: !1, file: !1, line: 1, type: !5, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized, retainedNodes: !2) |
| !5 = !DISubroutineType(types: !6) |
| !6 = !{!7, !7, !7} |
| !7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !8 = !{i32 7, !"Dwarf Version", i32 4} |
| !9 = !{i32 2, !"Debug Info Version", i32 3} |
| !10 = !{i32 1, !"wchar_size", i32 4} |
| !11 = !{!"clang version 11.0.0"} |
| !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) |
| !13 = !DISubroutineType(types: !14) |
| !14 = !{null, !15, !7} |
| !15 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !7, size: 32) |
| !16 = !{!17, !18} |
| !17 = !DILocalVariable(name: "adr", arg: 1, scope: !12, file: !1, line: 2, type: !15) |
| !18 = !DILocalVariable(name: "val", arg: 2, scope: !12, file: !1, line: 2, type: !7) |
| !19 = !DILocation(line: 0, scope: !12) |
| |
| ... |
| --- |
| name: set |
| alignment: 4 |
| stack: |
| - { id: 0, name: '', type: spill-slot, offset: -4, size: 4, alignment: 4, |
| stack-id: default, callee-saved-register: '$ra', callee-saved-restored: true, |
| debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } |
| - { id: 1, name: '', type: spill-slot, offset: -8, size: 4, alignment: 4, |
| stack-id: default, callee-saved-register: '$s1', callee-saved-restored: true, |
| debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } |
| - { id: 2, name: '', type: spill-slot, offset: -12, size: 4, alignment: 4, |
| stack-id: default, callee-saved-register: '$s0', callee-saved-restored: true, |
| debug-info-variable: '', debug-info-expression: '', debug-info-location: '' } |
| callSites: |
| - { bb: 0, offset: 16, fwdArgRegs: |
| - { arg: 0, reg: '$a0' } |
| - { arg: 1, reg: '$a1' } } |
| body: | |
| bb.0.entry: |
| DBG_VALUE $a0, $noreg, !17, !DIExpression(), debug-location !19 |
| DBG_VALUE $a1, $noreg, !18, !DIExpression(), debug-location !19 |
| DBG_VALUE $a1, $noreg, !18, !DIExpression(), debug-location !19 |
| $sp = ADDiu $sp, -32 |
| CFI_INSTRUCTION def_cfa_offset 32 |
| SW killed $ra, $sp, 28 :: (store (s32) into %stack.0) |
| SW killed $s1, $sp, 24 :: (store (s32) into %stack.1) |
| SW killed $s0, $sp, 20 :: (store (s32) into %stack.2) |
| CFI_INSTRUCTION offset $ra_64, -4 |
| CFI_INSTRUCTION offset $s1_64, -8 |
| CFI_INSTRUCTION offset $s0_64, -12 |
| $s0 = OR $a0, $zero |
| DBG_VALUE $s0, $noreg, !17, !DIExpression(), debug-location !19 |
| renamable $s1 = nsw ADDiu killed renamable $a1, 1, debug-location !19 |
| DBG_VALUE $s1, $noreg, !18, !DIExpression(), debug-location !19 |
| $a0 = OR $s1, $zero, debug-location !19 |
| JAL @sum, csr_o32, implicit-def dead $ra, implicit $a0, implicit $a1, implicit-def $sp, implicit-def $v0, debug-location !19 { |
| $a1 = OR $s1, $zero, debug-location !19 |
| } |
| renamable $at = nsw ADDu killed renamable $v0, killed renamable $s1, debug-location !19 |
| SW killed renamable $at, killed renamable $s0, 0, debug-location !19 :: (store (s32) into %ir.adr) |
| $s0 = LW $sp, 20 |
| DBG_VALUE $a0, $noreg, !17, !DIExpression(DW_OP_LLVM_entry_value, 1), debug-location !19 |
| $s1 = LW $sp, 24 |
| $ra = LW $sp, 28 |
| PseudoReturn undef $ra { |
| $sp = ADDiu $sp, 32 |
| } |
| |
| ... |
| |