| ;; Test callsite context graph generation for simple call graph with |
| ;; two memprof contexts and no inlining, as well as graph and IR cloning. |
| ;; |
| ;; Original code looks like: |
| ;; |
| ;; char *bar() { |
| ;; return new char[10]; |
| ;; } |
| ;; |
| ;; char *baz() { |
| ;; return bar(); |
| ;; } |
| ;; |
| ;; char *foo() { |
| ;; return baz(); |
| ;; } |
| ;; |
| ;; int main(int argc, char **argv) { |
| ;; char *x = foo(); |
| ;; char *y = foo(); |
| ;; memset(x, 0, 10); |
| ;; memset(y, 0, 10); |
| ;; delete[] x; |
| ;; sleep(10); |
| ;; delete[] y; |
| ;; return 0; |
| ;; } |
| ;; |
| ;; Code compiled with -mllvm -memprof-ave-lifetime-cold-threshold=5 so that the |
| ;; memory freed after sleep(10) results in cold lifetimes. |
| ;; |
| ;; The IR was then reduced using llvm-reduce with the expected FileCheck input. |
| |
| ;; -stats requires asserts |
| ; REQUIRES: asserts |
| |
| ; RUN: opt -passes=memprof-context-disambiguation -supports-hot-cold-new \ |
| ; RUN: -memprof-verify-ccg -memprof-verify-nodes -memprof-dump-ccg \ |
| ; RUN: -memprof-export-to-dot -memprof-dot-file-path-prefix=%t. \ |
| ; RUN: -stats -pass-remarks=memprof-context-disambiguation \ |
| ; RUN: -memprof-report-hinted-sizes \ |
| ; RUN: %s -S 2>&1 | FileCheck %s --check-prefix=DUMP --check-prefix=IR \ |
| ; RUN: --check-prefix=STATS --check-prefix=REMARKS --check-prefix=SIZES |
| |
| ; RUN: cat %t.ccg.postbuild.dot | FileCheck %s --check-prefix=DOT |
| ;; We should have cloned bar, baz, and foo, for the cold memory allocation. |
| ; RUN: cat %t.ccg.cloned.dot | FileCheck %s --check-prefix=DOTCLONED |
| |
| ;; Check again without -supports-hot-cold-new and ensure all MIB are cold and |
| ;; that there is no cloning. |
| ; RUN: opt -passes=memprof-context-disambiguation \ |
| ; RUN: -memprof-verify-ccg -memprof-verify-nodes -memprof-dump-ccg \ |
| ; RUN: -memprof-export-to-dot -memprof-dot-file-path-prefix=%t. \ |
| ; RUN: -stats -pass-remarks=memprof-context-disambiguation \ |
| ; RUN: %s -S 2>&1 | FileCheck %s --implicit-check-not="Callsite Context Graph" \ |
| ; RUN: --implicit-check-not="created clone" |
| |
| target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" |
| target triple = "x86_64-unknown-linux-gnu" |
| |
| define i32 @main() #0 { |
| entry: |
| %call = call noundef ptr @_Z3foov(), !callsite !0 |
| %call1 = call noundef ptr @_Z3foov(), !callsite !1 |
| ret i32 0 |
| } |
| |
| ; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write) |
| declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1 |
| |
| ; Function Attrs: nobuiltin |
| declare void @_ZdaPv() #2 |
| |
| define internal ptr @_Z3barv() #3 !dbg !15 { |
| entry: |
| %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #6, !memprof !2, !callsite !7 |
| ret ptr null |
| } |
| |
| declare ptr @_Znam(i64) |
| |
| define internal ptr @_Z3bazv() #4 { |
| entry: |
| %call = call noundef ptr @_Z3barv(), !callsite !8 |
| ret ptr null |
| } |
| |
| ; Function Attrs: noinline |
| define internal ptr @_Z3foov() #5 { |
| entry: |
| %call = call noundef ptr @_Z3bazv(), !callsite !9 |
| ret ptr null |
| } |
| |
| ; uselistorder directives |
| uselistorder ptr @_Z3foov, { 1, 0 } |
| |
| attributes #0 = { "tune-cpu"="generic" } |
| attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: write) } |
| attributes #2 = { nobuiltin } |
| attributes #3 = { "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" } |
| attributes #4 = { "stack-protector-buffer-size"="8" } |
| attributes #5 = { noinline } |
| attributes #6 = { builtin } |
| |
| !llvm.dbg.cu = !{!13} |
| !llvm.module.flags = !{!20, !21} |
| |
| !0 = !{i64 8632435727821051414} |
| !1 = !{i64 -3421689549917153178} |
| !2 = !{!3, !5} |
| !3 = !{!4, !"notcold", !10} |
| !4 = !{i64 9086428284934609951, i64 -5964873800580613432, i64 2732490490862098848, i64 8632435727821051414} |
| !5 = !{!6, !"cold", !11, !12} |
| !6 = !{i64 9086428284934609951, i64 -5964873800580613432, i64 2732490490862098848, i64 -3421689549917153178} |
| !7 = !{i64 9086428284934609951} |
| !8 = !{i64 -5964873800580613432} |
| !9 = !{i64 2732490490862098848} |
| !10 = !{i64 123, i64 100} |
| !11 = !{i64 456, i64 200} |
| !12 = !{i64 789, i64 300} |
| !13 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !14, producer: "clang version 21.0.0git (git@github.com:llvm/llvm-project.git e391301e0e4d9183fe06e69602e87b0bc889aeda)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, splitDebugInlining: false, nameTableKind: None) |
| !14 = !DIFile(filename: "basic.cc", directory: "", checksumkind: CSK_MD5, checksum: "8636c46e81402013b9d54e8307d2f149") |
| !15 = distinct !DISubprogram(name: "bar", linkageName: "_Z3barv", scope: !14, file: !14, line: 1, type: !16, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagDefinition, unit: !13, declaration: !22) |
| !16 = !DISubroutineType(types: !17) |
| !17 = !{!18} |
| !18 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !19, size: 64) |
| !19 = !DIBasicType(name: "char", size: 8, encoding: DW_ATE_signed_char) |
| !20 = !{i32 7, !"Dwarf Version", i32 5} |
| !21 = !{i32 2, !"Debug Info Version", i32 3} |
| !22 = !DISubprogram(name: "bar", linkageName: "_Z3barv", scope: !14, file: !14, line: 1, type: !16, scopeLine: 1, flags: DIFlagPrototyped, spFlags: DISPFlagOptimized) |
| |
| ; DUMP: CCG before cloning: |
| ; DUMP: Callsite Context Graph: |
| ; DUMP: Node [[BAR:0x[a-z0-9]+]] |
| ; DUMP: %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #6 (clone 0) |
| ; DUMP: AllocTypes: NotColdCold |
| ; DUMP: ContextIds: 1 2 |
| ; DUMP: CalleeEdges: |
| ; DUMP: CallerEdges: |
| ; DUMP: Edge from Callee [[BAR]] to Caller: [[BAZ:0x[a-z0-9]+]] AllocTypes: NotColdCold ContextIds: 1 2 |
| |
| ; DUMP: Node [[BAZ]] |
| ; DUMP: %call = call noundef ptr @_Z3barv() (clone 0) |
| ; DUMP: AllocTypes: NotColdCold |
| ; DUMP: ContextIds: 1 2 |
| ; DUMP: CalleeEdges: |
| ; DUMP: Edge from Callee [[BAR]] to Caller: [[BAZ]] AllocTypes: NotColdCold ContextIds: 1 2 |
| ; DUMP: CallerEdges: |
| ; DUMP: Edge from Callee [[BAZ]] to Caller: [[FOO:0x[a-z0-9]+]] AllocTypes: NotColdCold ContextIds: 1 2 |
| |
| ; DUMP: Node [[FOO]] |
| ; DUMP: %call = call noundef ptr @_Z3bazv() (clone 0) |
| ; DUMP: AllocTypes: NotColdCold |
| ; DUMP: ContextIds: 1 2 |
| ; DUMP: CalleeEdges: |
| ; DUMP: Edge from Callee [[BAZ]] to Caller: [[FOO]] AllocTypes: NotColdCold ContextIds: 1 2 |
| ; DUMP: CallerEdges: |
| ; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 1 |
| ; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN2:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 2 |
| |
| ; DUMP: Node [[MAIN1]] |
| ; DUMP: %call = call noundef ptr @_Z3foov() (clone 0) |
| ; DUMP: AllocTypes: NotCold |
| ; DUMP: ContextIds: 1 |
| ; DUMP: CalleeEdges: |
| ; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 1 |
| ; DUMP: CallerEdges: |
| |
| ; DUMP: Node [[MAIN2]] |
| ; DUMP: %call1 = call noundef ptr @_Z3foov() (clone 0) |
| ; DUMP: AllocTypes: Cold |
| ; DUMP: ContextIds: 2 |
| ; DUMP: CalleeEdges: |
| ; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 2 |
| ; DUMP: CallerEdges: |
| |
| ; DUMP: CCG after cloning: |
| ; DUMP: Callsite Context Graph: |
| ; DUMP: Node [[BAR:0x[a-z0-9]+]] |
| ; DUMP: %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #6 (clone 0) |
| ; DUMP: AllocTypes: NotCold |
| ; DUMP: ContextIds: 1 |
| ; DUMP: CalleeEdges: |
| ; DUMP: CallerEdges: |
| ; DUMP: Edge from Callee [[BAR]] to Caller: [[BAZ:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 1 |
| ; DUMP: Clones: [[BAR2:0x[a-z0-9]+]] |
| |
| ; DUMP: Node [[BAZ]] |
| ; DUMP: %call = call noundef ptr @_Z3barv() (clone 0) |
| ; DUMP: AllocTypes: NotCold |
| ; DUMP: ContextIds: 1 |
| ; DUMP: CalleeEdges: |
| ; DUMP: Edge from Callee [[BAR]] to Caller: [[BAZ]] AllocTypes: NotCold ContextIds: 1 |
| ; DUMP: CallerEdges: |
| ; DUMP: Edge from Callee [[BAZ]] to Caller: [[FOO:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 1 |
| ; DUMP: Clones: [[BAZ2:0x[a-z0-9]+]] |
| |
| ; DUMP: Node [[FOO]] |
| ; DUMP: %call = call noundef ptr @_Z3bazv() (clone 0) |
| ; DUMP: AllocTypes: NotCold |
| ; DUMP: ContextIds: 1 |
| ; DUMP: CalleeEdges: |
| ; DUMP: Edge from Callee [[BAZ]] to Caller: [[FOO]] AllocTypes: NotCold ContextIds: 1 |
| ; DUMP: CallerEdges: |
| ; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 1 |
| ; DUMP: Clones: [[FOO2:0x[a-z0-9]+]] |
| |
| ; DUMP: Node [[MAIN1]] |
| ; DUMP: %call = call noundef ptr @_Z3foov() (clone 0) |
| ; DUMP: AllocTypes: NotCold |
| ; DUMP: ContextIds: 1 |
| ; DUMP: CalleeEdges: |
| ; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 1 |
| ; DUMP: CallerEdges: |
| |
| ; DUMP: Node [[MAIN2]] |
| ; DUMP: %call1 = call noundef ptr @_Z3foov() (clone 0) |
| ; DUMP: AllocTypes: Cold |
| ; DUMP: ContextIds: 2 |
| ; DUMP: CalleeEdges: |
| ; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 2 |
| ; DUMP: CallerEdges: |
| |
| ; DUMP: Node [[FOO2]] |
| ; DUMP: %call = call noundef ptr @_Z3bazv() (clone 0) |
| ; DUMP: AllocTypes: Cold |
| ; DUMP: ContextIds: 2 |
| ; DUMP: CalleeEdges: |
| ; DUMP: Edge from Callee [[BAZ2]] to Caller: [[FOO2]] AllocTypes: Cold ContextIds: 2 |
| ; DUMP: CallerEdges: |
| ; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN2:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 2 |
| ; DUMP: Clone of [[FOO]] |
| |
| ; DUMP: Node [[BAZ2]] |
| ; DUMP: %call = call noundef ptr @_Z3barv() (clone 0) |
| ; DUMP: AllocTypes: Cold |
| ; DUMP: ContextIds: 2 |
| ; DUMP: CalleeEdges: |
| ; DUMP: Edge from Callee [[BAR2]] to Caller: [[BAZ2]] AllocTypes: Cold ContextIds: 2 |
| ; DUMP: CallerEdges: |
| ; DUMP: Edge from Callee [[BAZ2]] to Caller: [[FOO2]] AllocTypes: Cold ContextIds: 2 |
| ; DUMP: Clone of [[BAZ]] |
| |
| ; DUMP: Node [[BAR2]] |
| ; DUMP: %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #6 (clone 0) |
| ; DUMP: AllocTypes: Cold |
| ; DUMP: ContextIds: 2 |
| ; DUMP: CalleeEdges: |
| ; DUMP: CallerEdges: |
| ; DUMP: Edge from Callee [[BAR2]] to Caller: [[BAZ2]] AllocTypes: Cold ContextIds: 2 |
| ; DUMP: Clone of [[BAR]] |
| |
| |
| ; REMARKS: created clone _Z3barv.memprof.1 |
| ; REMARKS: created clone _Z3bazv.memprof.1 |
| ; REMARKS: created clone _Z3foov.memprof.1 |
| ; REMARKS: call in clone main assigned to call function clone _Z3foov.memprof.1 |
| ; REMARKS: call in clone _Z3foov.memprof.1 assigned to call function clone _Z3bazv.memprof.1 |
| ; REMARKS: call in clone _Z3bazv.memprof.1 assigned to call function clone _Z3barv.memprof.1 |
| ; REMARKS: call in clone _Z3barv.memprof.1 marked with memprof allocation attribute cold |
| ; REMARKS: call in clone main assigned to call function clone _Z3foov |
| ; REMARKS: call in clone _Z3foov assigned to call function clone _Z3bazv |
| ; REMARKS: call in clone _Z3bazv assigned to call function clone _Z3barv |
| ; REMARKS: call in clone _Z3barv marked with memprof allocation attribute notcold |
| |
| ; SIZES: NotCold full allocation context 123 with total size 100 is NotCold after cloning (context id 1) |
| ; SIZES: Cold full allocation context 456 with total size 200 is Cold after cloning (context id 2) |
| ; SIZES: Cold full allocation context 789 with total size 300 is Cold after cloning (context id 2) |
| |
| ; IR: define {{.*}} @main |
| ;; The first call to foo does not allocate cold memory. It should call the |
| ;; original functions, which ultimately call the original allocation decorated |
| ;; with a "notcold" attribute. |
| ; IR: call {{.*}} @_Z3foov() |
| ;; The second call to foo allocates cold memory. It should call cloned functions |
| ;; which ultimately call a cloned allocation decorated with a "cold" attribute. |
| ; IR: call {{.*}} @_Z3foov.memprof.1() |
| ; IR: define internal {{.*}} @_Z3barv() |
| ; IR: call {{.*}} @_Znam(i64 noundef 10) #[[NOTCOLD:[0-9]+]] |
| ; IR: define internal {{.*}} @_Z3bazv() |
| ; IR: call {{.*}} @_Z3barv() |
| ; IR: define internal {{.*}} @_Z3foov() |
| ; IR: call {{.*}} @_Z3bazv() |
| ; IR: define internal {{.*}} @_Z3barv.memprof.1() {{.*}} !dbg ![[SP:[0-9]+]] |
| ; IR: call {{.*}} @_Znam(i64 noundef 10) #[[COLD:[0-9]+]] |
| ; IR: define internal {{.*}} @_Z3bazv.memprof.1() |
| ; IR: call {{.*}} @_Z3barv.memprof.1() |
| ; IR: define internal {{.*}} @_Z3foov.memprof.1() |
| ; IR: call {{.*}} @_Z3bazv.memprof.1() |
| ; IR: attributes #[[NOTCOLD]] = { builtin "memprof"="notcold" } |
| ; IR: attributes #[[COLD]] = { builtin "memprof"="cold" } |
| ;; Make sure the clone's linkageName was updated. |
| ; IR: ![[SP]] = distinct !DISubprogram(name: "bar", linkageName: "_Z3barv.memprof.1", {{.*}} declaration: ![[SP2:[0-9]+]]) |
| ; IR: ![[SP2]] = !DISubprogram(name: "bar", linkageName: "_Z3barv.memprof.1" |
| |
| |
| ; STATS: 1 memprof-context-disambiguation - Number of cold static allocations (possibly cloned) |
| ; STATS: 1 memprof-context-disambiguation - Number of not cold static allocations (possibly cloned) |
| ; STATS: 3 memprof-context-disambiguation - Number of function clones created during whole program analysis |
| |
| |
| ; DOT: digraph "postbuild" { |
| ; DOT: label="postbuild"; |
| ; DOT: Node[[BAR:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAR]] ContextIds: 1 2",fillcolor="mediumorchid1",style="filled",label="{OrigId: Alloc0\n_Z3barv -\> _Znam}"]; |
| ; DOT: Node[[BAZ:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAZ]] ContextIds: 1 2",fillcolor="mediumorchid1",style="filled",label="{OrigId: 12481870273128938184\n_Z3bazv -\> _Z3barv}"]; |
| ; DOT: Node[[BAZ]] -> Node[[BAR]][tooltip="ContextIds: 1 2",fillcolor="mediumorchid1",color="mediumorchid1"]; |
| ; DOT: Node[[FOO:0x[a-z0-9]+]] [shape=record,tooltip="N[[FOO]] ContextIds: 1 2",fillcolor="mediumorchid1",style="filled",label="{OrigId: 2732490490862098848\n_Z3foov -\> _Z3bazv}"]; |
| ; DOT: Node[[FOO]] -> Node[[BAZ]][tooltip="ContextIds: 1 2",fillcolor="mediumorchid1",color="mediumorchid1"]; |
| ; DOT: Node[[MAIN1:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN1]] ContextIds: 1",fillcolor="brown1",style="filled",label="{OrigId: 8632435727821051414\nmain -\> _Z3foov}"]; |
| ; DOT: Node[[MAIN1]] -> Node[[FOO]][tooltip="ContextIds: 1",fillcolor="brown1",color="brown1"]; |
| ; DOT: Node[[MAIN2:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN2]] ContextIds: 2",fillcolor="cyan",style="filled",label="{OrigId: 15025054523792398438\nmain -\> _Z3foov}"]; |
| ; DOT: Node[[MAIN2]] -> Node[[FOO]][tooltip="ContextIds: 2",fillcolor="cyan",color="cyan"]; |
| ; DOT: } |
| |
| |
| ; DOTCLONED: digraph "cloned" { |
| ; DOTCLONED: label="cloned"; |
| ; DOTCLONED: Node[[BAR:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAR]] ContextIds: 1",fillcolor="brown1",style="filled",label="{OrigId: Alloc0\n_Z3barv -\> _Znam}"]; |
| ; DOTCLONED: Node[[BAZ:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAZ]] ContextIds: 1",fillcolor="brown1",style="filled",label="{OrigId: 12481870273128938184\n_Z3bazv -\> _Z3barv}"]; |
| ; DOTCLONED: Node[[BAZ]] -> Node[[BAR]][tooltip="ContextIds: 1",fillcolor="brown1",color="brown1"]; |
| ; DOTCLONED: Node[[FOO:0x[a-z0-9]+]] [shape=record,tooltip="N[[FOO]] ContextIds: 1",fillcolor="brown1",style="filled",label="{OrigId: 2732490490862098848\n_Z3foov -\> _Z3bazv}"]; |
| ; DOTCLONED: Node[[FOO]] -> Node[[BAZ]][tooltip="ContextIds: 1",fillcolor="brown1",color="brown1"]; |
| ; DOTCLONED: Node[[MAIN1:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN1]] ContextIds: 1",fillcolor="brown1",style="filled",label="{OrigId: 8632435727821051414\nmain -\> _Z3foov}"]; |
| ; DOTCLONED: Node[[MAIN1]] -> Node[[FOO]][tooltip="ContextIds: 1",fillcolor="brown1",color="brown1"]; |
| ; DOTCLONED: Node[[MAIN2:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN2]] ContextIds: 2",fillcolor="cyan",style="filled",label="{OrigId: 15025054523792398438\nmain -\> _Z3foov}"]; |
| ; DOTCLONED: Node[[MAIN2]] -> Node[[FOO2:0x[a-z0-9]+]][tooltip="ContextIds: 2",fillcolor="cyan",color="cyan"]; |
| ; DOTCLONED: Node[[FOO2]] [shape=record,tooltip="N[[FOO2]] ContextIds: 2",fillcolor="cyan",color="blue",style="filled,bold,dashed",label="{OrigId: 0\n_Z3foov -\> _Z3bazv}"]; |
| ; DOTCLONED: Node[[FOO2]] -> Node[[BAZ2:0x[a-z0-9]+]][tooltip="ContextIds: 2",fillcolor="cyan",color="cyan"]; |
| ; DOTCLONED: Node[[BAZ2]] [shape=record,tooltip="N[[BAZ2]] ContextIds: 2",fillcolor="cyan",color="blue",style="filled,bold,dashed",label="{OrigId: 0\n_Z3bazv -\> _Z3barv}"]; |
| ; DOTCLONED: Node[[BAZ2]] -> Node[[BAR2:0x[a-z0-9]+]][tooltip="ContextIds: 2",fillcolor="cyan",color="cyan"]; |
| ; DOTCLONED: Node[[BAR2]] [shape=record,tooltip="N[[BAR2]] ContextIds: 2",fillcolor="cyan",color="blue",style="filled,bold,dashed",label="{OrigId: Alloc0\n_Z3barv -\> _Znam}"]; |
| ; DOTCLONED: } |
