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9513f2fdf2
Improve the information printed when -memprof-report-hinted-sizes is enabled. Now print the full context hash computed from the original profile, similar to what we do when reporting matching statistics. This will make it easier to correlate with the profile. Note that the full context hash must be computed at profile match time and saved in the metadata and summary, because we may trim the context during matching when it isn't needed for distinguishing hotness. Similarly, due to the context trimming, we may have more than one full context id and total size pair per MIB in the metadata and summary, which now get a list of these pairs. Remove the old aggregate size from the metadata and summary support. One other change from the prior support is that we no longer write the size information into the combined index for the LTO backends, which don't use this information, which reduces unnecessary bloat in distributed index files.
117 lines
4.9 KiB
LLVM
117 lines
4.9 KiB
LLVM
;; Test to ensure a call to a different callee but with the same debug info
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;; (and therefore callsite metadata) as a preceding call in the alloc context
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;; does not cause missing or incorrect cloning. This test is otherwise the same
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;; as memprof-basic.ll.
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;; -stats requires asserts
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; REQUIRES: asserts
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; RUN: opt -thinlto-bc %s >%t.o
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; RUN: llvm-lto2 run %t.o -enable-memprof-context-disambiguation \
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; RUN: -supports-hot-cold-new \
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; RUN: -r=%t.o,main,plx \
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; RUN: -r=%t.o,blah, \
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; RUN: -r=%t.o,_Znam, \
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; RUN: -memprof-verify-ccg -memprof-verify-nodes \
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; RUN: -stats -pass-remarks=memprof-context-disambiguation -save-temps \
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; RUN: -o %t.out 2>&1 | FileCheck %s \
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; RUN: --check-prefix=STATS --check-prefix=STATS-BE --check-prefix=REMARKS
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; RUN: llvm-dis %t.out.1.4.opt.bc -o - | FileCheck %s --check-prefix=IR
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source_filename = "memprof-aliased-location1.ll"
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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 ptr @_Z3foov(), !callsite !0
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%call1 = call ptr @_Z3foov(), !callsite !1
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ret i32 0
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}
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declare void @blah()
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define internal ptr @_Z3barv() #0 {
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entry:
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%call = call ptr @_Znam(i64 0), !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() #0 {
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entry:
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;; Preceding call to another callee but with the same debug location / callsite id
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call void @blah(), !callsite !8
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%call = call ptr @_Z3barv(), !callsite !8
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ret ptr null
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}
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define internal ptr @_Z3foov() #0 {
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entry:
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%call = call 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 = { noinline optnone }
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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"}
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!4 = !{i64 9086428284934609951, i64 -5964873800580613432, i64 2732490490862098848, i64 8632435727821051414}
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!5 = !{!6, !"cold"}
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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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; REMARKS: call in clone main assigned to call function clone _Z3foov.memprof.1
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; REMARKS: created clone _Z3barv.memprof.1
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; REMARKS: call in clone _Z3barv marked with memprof allocation attribute notcold
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; REMARKS: call in clone _Z3barv.memprof.1 marked with memprof allocation attribute cold
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; REMARKS: created 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: created 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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; 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 0) #[[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 0) #[[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]] = { "memprof"="notcold" }
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; IR: attributes #[[COLD]] = { "memprof"="cold" }
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; STATS: 1 memprof-context-disambiguation - Number of cold static allocations (possibly cloned)
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; STATS-BE: 1 memprof-context-disambiguation - Number of cold static allocations (possibly cloned) during ThinLTO backend
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; STATS: 1 memprof-context-disambiguation - Number of not cold static allocations (possibly cloned)
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; STATS-BE: 1 memprof-context-disambiguation - Number of not cold static allocations (possibly cloned) during ThinLTO backend
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; STATS-BE: 2 memprof-context-disambiguation - Number of allocation versions (including clones) during ThinLTO backend
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; STATS: 3 memprof-context-disambiguation - Number of function clones created during whole program analysis
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; STATS-BE: 3 memprof-context-disambiguation - Number of function clones created during ThinLTO backend
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; STATS-BE: 3 memprof-context-disambiguation - Number of functions that had clones created during ThinLTO backend
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; STATS-BE: 2 memprof-context-disambiguation - Maximum number of allocation versions created for an original allocation during ThinLTO backend
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; STATS-BE: 1 memprof-context-disambiguation - Number of original (not cloned) allocations with memprof profiles during ThinLTO backend
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