93b74f7178
`TotalRootEntryCount` captures how many times that root was entered - regardless if a profile was also collected or not (profile collection for a given root happens on only one thread at a time). We don't do this in compiler_rt because the goal there is to flush out the data as fast as possible, so traversing and multiplying vectors is punted to the profile user. We really just need to do this when flattening the profile so that the values across roots and flat profiles match. We could do it earlier, too - like when loading the profile - but it seems beneficial (at least for debugging) to keep the counter values the same as the loaded ones. We can revisit this later.
106 lines
3.0 KiB
LLVM
106 lines
3.0 KiB
LLVM
; REQUIRES: x86_64-linux
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;
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; RUN: rm -rf %t
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; RUN: split-file %s %t
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; RUN: llvm-ctxprof-util fromYAML --input=%t/profile.yaml --output=%t/profile.ctxprofdata
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; RUN: opt -passes='require<ctx-prof-analysis>,print<ctx-prof-analysis>' -ctx-profile-printer-level=everything \
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; RUN: %t/example.ll -S 2>&1 | FileCheck %s --check-prefix=NO-CTX
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; RUN: not opt -passes='require<ctx-prof-analysis>,print<ctx-prof-analysis>' -ctx-profile-printer-level=everything \
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; RUN: -use-ctx-profile=does_not_exist.ctxprofdata %t/example.ll -S 2>&1 | FileCheck %s --check-prefix=NO-FILE
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; RUN: opt -module-summary -passes='thinlto-pre-link<O2>' \
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; RUN: -use-ctx-profile=%t/profile.ctxprofdata %t/example.ll -S -o %t/prelink.ll
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; RUN: opt -module-summary -passes='thinlto-pre-link<O2>' -use-ctx-profile=%t/profile.ctxprofdata \
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; RUN: %t/example.ll -S -o %t/prelink.ll
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; RUN: opt -passes='require<ctx-prof-analysis>,print<ctx-prof-analysis>' -ctx-profile-printer-level=everything \
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; RUN: -use-ctx-profile=%t/profile.ctxprofdata %t/prelink.ll -S 2> %t/output.txt
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; RUN: diff %t/expected-profile-output.txt %t/output.txt
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; NO-FILE: error: could not open contextual profile file
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; NO-CTX: No contextual profile was provided
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;
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; This is the reference profile, laid out in the format the json formatter will
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; output it from opt.
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;--- profile.yaml
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Contexts:
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- Guid: 12341
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TotalRootEntryCount: 90
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Counters: [9]
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- Guid: 12074870348631550642
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TotalRootEntryCount: 24
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Counters: [5]
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- Guid: 11872291593386833696
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TotalRootEntryCount: 4
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Counters: [1]
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Callsites: -
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- Guid: 728453322856651412
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Counters: [6, 7]
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;--- expected-profile-output.txt
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Function Info:
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4909520559318251808 : an_entrypoint. MaxCounterID: 2. MaxCallsiteID: 1
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11872291593386833696 : foo. MaxCounterID: 1. MaxCallsiteID: 1
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12074870348631550642 : another_entrypoint_no_callees. MaxCounterID: 1. MaxCallsiteID: 0
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Current Profile:
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Contexts:
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- Guid: 12341
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TotalRootEntryCount: 90
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Counters: [ 9 ]
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- Guid: 11872291593386833696
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TotalRootEntryCount: 4
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Counters: [ 1 ]
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Callsites:
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- - Guid: 728453322856651412
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Counters: [ 6, 7 ]
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- Guid: 12074870348631550642
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TotalRootEntryCount: 24
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Counters: [ 5 ]
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Flat Profile:
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12341 : 810
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728453322856651412 : 24 28
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11872291593386833696 : 4
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12074870348631550642 : 120
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;--- example.ll
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declare void @bar()
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define private void @foo(i32 %a, ptr %fct) #0 !guid !0 {
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%t = icmp eq i32 %a, 0
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br i1 %t, label %yes, label %no
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yes:
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call void %fct(i32 %a)
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br label %exit
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no:
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call void @bar()
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br label %exit
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exit:
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ret void
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}
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define void @an_entrypoint(i32 %a) {
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%t = icmp eq i32 %a, 0
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br i1 %t, label %yes, label %no
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yes:
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call void @foo(i32 1, ptr null)
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ret void
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no:
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ret void
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}
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define void @another_entrypoint_no_callees(i32 %a) {
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%t = icmp eq i32 %a, 0
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br i1 %t, label %yes, label %no
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yes:
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ret void
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no:
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ret void
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}
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attributes #0 = { noinline }
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!0 = !{ i64 11872291593386833696 }
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