9f8205d9d8
If requested, via the -memprof-report-hinted-sizes option, track the total profiled size of each MIB through the thin link, then report on the corresponding allocation coldness after all cloning is complete. To save size, a different bitcode record type is used for the allocation info when the option is specified, and the sizes are kept separate from the MIBs in the index.
315 lines
14 KiB
LLVM
315 lines
14 KiB
LLVM
;; Test callsite context graph generation for simple call graph with
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;; two memprof contexts and no inlining, as well as graph and IR cloning.
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;;
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;; Original code looks like:
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;;
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;; char *bar() {
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;; return new char[10];
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;; }
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;;
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;; char *baz() {
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;; return bar();
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;; }
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;;
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;; char *foo() {
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;; return baz();
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;; }
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;;
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;; int main(int argc, char **argv) {
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;; char *x = foo();
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;; char *y = foo();
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;; memset(x, 0, 10);
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;; memset(y, 0, 10);
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;; delete[] x;
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;; sleep(10);
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;; delete[] y;
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;; return 0;
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;; }
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;;
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;; Code compiled with -mllvm -memprof-ave-lifetime-cold-threshold=5 so that the
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;; memory freed after sleep(10) results in cold lifetimes.
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;;
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;; The IR was then reduced using llvm-reduce with the expected FileCheck input.
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;; -stats requires asserts
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; REQUIRES: asserts
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; RUN: opt -passes=memprof-context-disambiguation -supports-hot-cold-new \
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; RUN: -memprof-verify-ccg -memprof-verify-nodes -memprof-dump-ccg \
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; RUN: -memprof-export-to-dot -memprof-dot-file-path-prefix=%t. \
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; RUN: -stats -pass-remarks=memprof-context-disambiguation \
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; RUN: -memprof-report-hinted-sizes \
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; RUN: %s -S 2>&1 | FileCheck %s --check-prefix=DUMP --check-prefix=IR \
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; RUN: --check-prefix=STATS --check-prefix=REMARKS --check-prefix=SIZES
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; RUN: cat %t.ccg.postbuild.dot | FileCheck %s --check-prefix=DOT
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;; We should have cloned bar, baz, and foo, for the cold memory allocation.
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; RUN: cat %t.ccg.cloned.dot | FileCheck %s --check-prefix=DOTCLONED
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;; Check again without -supports-hot-cold-new and ensure all MIB are cold and
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;; that there is no cloning.
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; RUN: opt -passes=memprof-context-disambiguation \
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; RUN: -memprof-verify-ccg -memprof-verify-nodes -memprof-dump-ccg \
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; RUN: -memprof-export-to-dot -memprof-dot-file-path-prefix=%t. \
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; RUN: -stats -pass-remarks=memprof-context-disambiguation \
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; RUN: %s -S 2>&1 | FileCheck %s --implicit-check-not="Callsite Context Graph" \
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; RUN: --implicit-check-not="created clone"
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define i32 @main() #0 {
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entry:
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%call = call noundef ptr @_Z3foov(), !callsite !0
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%call1 = call noundef ptr @_Z3foov(), !callsite !1
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ret i32 0
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}
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; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
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declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1
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; Function Attrs: nobuiltin
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declare void @_ZdaPv() #2
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define internal ptr @_Z3barv() #3 {
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entry:
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%call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #6, !memprof !2, !callsite !7
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ret ptr null
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}
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declare ptr @_Znam(i64)
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define internal ptr @_Z3bazv() #4 {
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entry:
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%call = call noundef ptr @_Z3barv(), !callsite !8
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ret ptr null
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}
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; Function Attrs: noinline
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define internal ptr @_Z3foov() #5 {
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entry:
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%call = call noundef ptr @_Z3bazv(), !callsite !9
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ret ptr null
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}
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; uselistorder directives
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uselistorder ptr @_Z3foov, { 1, 0 }
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attributes #0 = { "tune-cpu"="generic" }
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attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: write) }
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attributes #2 = { nobuiltin }
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attributes #3 = { "target-features"="+cx8,+fxsr,+mmx,+sse,+sse2,+x87" }
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attributes #4 = { "stack-protector-buffer-size"="8" }
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attributes #5 = { noinline }
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attributes #6 = { builtin }
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!0 = !{i64 8632435727821051414}
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!1 = !{i64 -3421689549917153178}
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!2 = !{!3, !5}
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!3 = !{!4, !"notcold", i64 100}
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!4 = !{i64 9086428284934609951, i64 -5964873800580613432, i64 2732490490862098848, i64 8632435727821051414}
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!5 = !{!6, !"cold", i64 400}
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!6 = !{i64 9086428284934609951, i64 -5964873800580613432, i64 2732490490862098848, i64 -3421689549917153178}
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!7 = !{i64 9086428284934609951}
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!8 = !{i64 -5964873800580613432}
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!9 = !{i64 2732490490862098848}
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; DUMP: CCG before cloning:
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; DUMP: Callsite Context Graph:
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; DUMP: Node [[BAR:0x[a-z0-9]+]]
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; DUMP: %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #6 (clone 0)
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; DUMP: AllocTypes: NotColdCold
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; DUMP: ContextIds: 1 2
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; DUMP: CalleeEdges:
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; DUMP: CallerEdges:
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; DUMP: Edge from Callee [[BAR]] to Caller: [[BAZ:0x[a-z0-9]+]] AllocTypes: NotColdCold ContextIds: 1 2
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; DUMP: Node [[BAZ]]
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; DUMP: %call = call noundef ptr @_Z3barv() (clone 0)
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; DUMP: AllocTypes: NotColdCold
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; DUMP: ContextIds: 1 2
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[BAR]] to Caller: [[BAZ]] AllocTypes: NotColdCold ContextIds: 1 2
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; DUMP: CallerEdges:
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; DUMP: Edge from Callee [[BAZ]] to Caller: [[FOO:0x[a-z0-9]+]] AllocTypes: NotColdCold ContextIds: 1 2
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; DUMP: Node [[FOO]]
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; DUMP: %call = call noundef ptr @_Z3bazv() (clone 0)
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; DUMP: AllocTypes: NotColdCold
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; DUMP: ContextIds: 1 2
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[BAZ]] to Caller: [[FOO]] AllocTypes: NotColdCold ContextIds: 1 2
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; DUMP: CallerEdges:
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; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 1
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; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN2:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 2
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; DUMP: Node [[MAIN1]]
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; DUMP: %call = call noundef ptr @_Z3foov() (clone 0)
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; DUMP: AllocTypes: NotCold
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; DUMP: ContextIds: 1
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 1
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; DUMP: CallerEdges:
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; DUMP: Node [[MAIN2]]
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; DUMP: %call1 = call noundef ptr @_Z3foov() (clone 0)
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; DUMP: AllocTypes: Cold
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; DUMP: ContextIds: 2
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 2
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; DUMP: CallerEdges:
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; DUMP: CCG after cloning:
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; DUMP: Callsite Context Graph:
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; DUMP: Node [[BAR:0x[a-z0-9]+]]
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; DUMP: %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #6 (clone 0)
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; DUMP: AllocTypes: NotCold
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; DUMP: ContextIds: 1
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; DUMP: CalleeEdges:
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; DUMP: CallerEdges:
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; DUMP: Edge from Callee [[BAR]] to Caller: [[BAZ:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 1
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; DUMP: Clones: [[BAR2:0x[a-z0-9]+]]
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; DUMP: Node [[BAZ]]
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; DUMP: %call = call noundef ptr @_Z3barv() (clone 0)
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; DUMP: AllocTypes: NotCold
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; DUMP: ContextIds: 1
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[BAR]] to Caller: [[BAZ]] AllocTypes: NotCold ContextIds: 1
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; DUMP: CallerEdges:
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; DUMP: Edge from Callee [[BAZ]] to Caller: [[FOO:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 1
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; DUMP: Clones: [[BAZ2:0x[a-z0-9]+]]
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; DUMP: Node [[FOO]]
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; DUMP: %call = call noundef ptr @_Z3bazv() (clone 0)
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; DUMP: AllocTypes: NotCold
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; DUMP: ContextIds: 1
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[BAZ]] to Caller: [[FOO]] AllocTypes: NotCold ContextIds: 1
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; DUMP: CallerEdges:
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; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1:0x[a-z0-9]+]] AllocTypes: NotCold ContextIds: 1
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; DUMP: Clones: [[FOO2:0x[a-z0-9]+]]
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; DUMP: Node [[MAIN1]]
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; DUMP: %call = call noundef ptr @_Z3foov() (clone 0)
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; DUMP: AllocTypes: NotCold
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; DUMP: ContextIds: 1
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[FOO]] to Caller: [[MAIN1]] AllocTypes: NotCold ContextIds: 1
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; DUMP: CallerEdges:
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; DUMP: Node [[MAIN2]]
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; DUMP: %call1 = call noundef ptr @_Z3foov() (clone 0)
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; DUMP: AllocTypes: Cold
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; DUMP: ContextIds: 2
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN2]] AllocTypes: Cold ContextIds: 2
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; DUMP: CallerEdges:
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; DUMP: Node [[FOO2]]
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; DUMP: %call = call noundef ptr @_Z3bazv() (clone 0)
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; DUMP: AllocTypes: Cold
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; DUMP: ContextIds: 2
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[BAZ2]] to Caller: [[FOO2]] AllocTypes: Cold ContextIds: 2
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; DUMP: CallerEdges:
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; DUMP: Edge from Callee [[FOO2]] to Caller: [[MAIN2:0x[a-z0-9]+]] AllocTypes: Cold ContextIds: 2
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; DUMP: Clone of [[FOO]]
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; DUMP: Node [[BAZ2]]
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; DUMP: %call = call noundef ptr @_Z3barv() (clone 0)
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; DUMP: AllocTypes: Cold
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; DUMP: ContextIds: 2
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; DUMP: CalleeEdges:
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; DUMP: Edge from Callee [[BAR2]] to Caller: [[BAZ2]] AllocTypes: Cold ContextIds: 2
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; DUMP: CallerEdges:
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; DUMP: Edge from Callee [[BAZ2]] to Caller: [[FOO2]] AllocTypes: Cold ContextIds: 2
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; DUMP: Clone of [[BAZ]]
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; DUMP: Node [[BAR2]]
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; DUMP: %call = call noalias noundef nonnull ptr @_Znam(i64 noundef 10) #6 (clone 0)
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; DUMP: AllocTypes: Cold
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; DUMP: ContextIds: 2
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; DUMP: CalleeEdges:
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; DUMP: CallerEdges:
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; DUMP: Edge from Callee [[BAR2]] to Caller: [[BAZ2]] AllocTypes: Cold ContextIds: 2
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; DUMP: Clone of [[BAR]]
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; REMARKS: created clone _Z3barv.memprof.1
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; REMARKS: created clone _Z3bazv.memprof.1
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; REMARKS: created clone _Z3foov.memprof.1
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; REMARKS: call in clone main assigned to call function clone _Z3foov.memprof.1
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; REMARKS: call in clone _Z3foov.memprof.1 assigned to call function clone _Z3bazv.memprof.1
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; REMARKS: call in clone _Z3bazv.memprof.1 assigned to call function clone _Z3barv.memprof.1
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; REMARKS: call in clone _Z3barv.memprof.1 marked with memprof allocation attribute cold
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; REMARKS: call in clone main assigned to call function clone _Z3foov
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; REMARKS: call in clone _Z3foov assigned to call function clone _Z3bazv
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; REMARKS: call in clone _Z3bazv assigned to call function clone _Z3barv
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; REMARKS: call in clone _Z3barv marked with memprof allocation attribute notcold
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; SIZES: NotCold context 1 with total size 100 is NotCold after cloning
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; SIZES: Cold context 2 with total size 400 is Cold after cloning
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; IR: define {{.*}} @main
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;; The first call to foo does not allocate cold memory. It should call the
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;; original functions, which ultimately call the original allocation decorated
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;; with a "notcold" attribute.
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; IR: call {{.*}} @_Z3foov()
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;; The second call to foo allocates cold memory. It should call cloned functions
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;; which ultimately call a cloned allocation decorated with a "cold" attribute.
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; IR: call {{.*}} @_Z3foov.memprof.1()
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; IR: define internal {{.*}} @_Z3barv()
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; IR: call {{.*}} @_Znam(i64 noundef 10) #[[NOTCOLD:[0-9]+]]
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; IR: define internal {{.*}} @_Z3bazv()
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; IR: call {{.*}} @_Z3barv()
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; IR: define internal {{.*}} @_Z3foov()
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; IR: call {{.*}} @_Z3bazv()
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; IR: define internal {{.*}} @_Z3barv.memprof.1()
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; IR: call {{.*}} @_Znam(i64 noundef 10) #[[COLD:[0-9]+]]
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; IR: define internal {{.*}} @_Z3bazv.memprof.1()
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; IR: call {{.*}} @_Z3barv.memprof.1()
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; IR: define internal {{.*}} @_Z3foov.memprof.1()
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; IR: call {{.*}} @_Z3bazv.memprof.1()
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; IR: attributes #[[NOTCOLD]] = { builtin "memprof"="notcold" }
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; IR: attributes #[[COLD]] = { builtin "memprof"="cold" }
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; STATS: 1 memprof-context-disambiguation - Number of cold static allocations (possibly cloned)
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; STATS: 1 memprof-context-disambiguation - Number of not cold static allocations (possibly cloned)
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; STATS: 3 memprof-context-disambiguation - Number of function clones created during whole program analysis
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; DOT: digraph "postbuild" {
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; DOT: label="postbuild";
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; DOT: Node[[BAR:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAR]] ContextIds: 1 2",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: Alloc0\n_Z3barv -\> _Znam}"];
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; DOT: Node[[BAZ:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAZ]] ContextIds: 1 2",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: 12481870273128938184\n_Z3bazv -\> _Z3barv}"];
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; DOT: Node[[BAZ]] -> Node[[BAR]][tooltip="ContextIds: 1 2",fillcolor="mediumorchid1"];
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; DOT: Node[[FOO:0x[a-z0-9]+]] [shape=record,tooltip="N[[FOO]] ContextIds: 1 2",fillcolor="mediumorchid1",style="filled",style="filled",label="{OrigId: 2732490490862098848\n_Z3foov -\> _Z3bazv}"];
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; DOT: Node[[FOO]] -> Node[[BAZ]][tooltip="ContextIds: 1 2",fillcolor="mediumorchid1"];
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; DOT: Node[[MAIN1:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN1]] ContextIds: 1",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 8632435727821051414\nmain -\> _Z3foov}"];
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; DOT: Node[[MAIN1]] -> Node[[FOO]][tooltip="ContextIds: 1",fillcolor="brown1"];
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; DOT: Node[[MAIN2:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN2]] ContextIds: 2",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 15025054523792398438\nmain -\> _Z3foov}"];
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; DOT: Node[[MAIN2]] -> Node[[FOO]][tooltip="ContextIds: 2",fillcolor="cyan"];
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; DOT: }
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; DOTCLONED: digraph "cloned" {
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; DOTCLONED: label="cloned";
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; DOTCLONED: Node[[BAR:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAR]] ContextIds: 1",fillcolor="brown1",style="filled",style="filled",label="{OrigId: Alloc0\n_Z3barv -\> _Znam}"];
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; DOTCLONED: Node[[BAZ:0x[a-z0-9]+]] [shape=record,tooltip="N[[BAZ]] ContextIds: 1",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 12481870273128938184\n_Z3bazv -\> _Z3barv}"];
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; DOTCLONED: Node[[BAZ]] -> Node[[BAR]][tooltip="ContextIds: 1",fillcolor="brown1"];
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; DOTCLONED: Node[[FOO:0x[a-z0-9]+]] [shape=record,tooltip="N[[FOO]] ContextIds: 1",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 2732490490862098848\n_Z3foov -\> _Z3bazv}"];
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; DOTCLONED: Node[[FOO]] -> Node[[BAZ]][tooltip="ContextIds: 1",fillcolor="brown1"];
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; DOTCLONED: Node[[MAIN1:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN1]] ContextIds: 1",fillcolor="brown1",style="filled",style="filled",label="{OrigId: 8632435727821051414\nmain -\> _Z3foov}"];
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; DOTCLONED: Node[[MAIN1]] -> Node[[FOO]][tooltip="ContextIds: 1",fillcolor="brown1"];
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; DOTCLONED: Node[[MAIN2:0x[a-z0-9]+]] [shape=record,tooltip="N[[MAIN2]] ContextIds: 2",fillcolor="cyan",style="filled",style="filled",label="{OrigId: 15025054523792398438\nmain -\> _Z3foov}"];
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; DOTCLONED: Node[[MAIN2]] -> Node[[FOO2:0x[a-z0-9]+]][tooltip="ContextIds: 2",fillcolor="cyan"];
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; DOTCLONED: Node[[FOO2]] [shape=record,tooltip="N[[FOO2]] ContextIds: 2",fillcolor="cyan",style="filled",color="blue",style="filled,bold,dashed",label="{OrigId: 0\n_Z3foov -\> _Z3bazv}"];
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; DOTCLONED: Node[[FOO2]] -> Node[[BAZ2:0x[a-z0-9]+]][tooltip="ContextIds: 2",fillcolor="cyan"];
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; DOTCLONED: Node[[BAZ2]] [shape=record,tooltip="N[[BAZ2]] ContextIds: 2",fillcolor="cyan",style="filled",color="blue",style="filled,bold,dashed",label="{OrigId: 0\n_Z3bazv -\> _Z3barv}"];
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; DOTCLONED: Node[[BAZ2]] -> Node[[BAR2:0x[a-z0-9]+]][tooltip="ContextIds: 2",fillcolor="cyan"];
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; DOTCLONED: Node[[BAR2]] [shape=record,tooltip="N[[BAR2]] ContextIds: 2",fillcolor="cyan",style="filled",color="blue",style="filled,bold,dashed",label="{OrigId: Alloc0\n_Z3barv -\> _Znam}"];
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; DOTCLONED: }
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