129 lines
4.2 KiB
LLVM
129 lines
4.2 KiB
LLVM
;; Test to make sure that missing tail call frames in memprof profiles are
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;; identified but not cloned when there are multiple non-unique possible
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;; tail call chains between the profiled frames.
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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: -stats -debug %s -S 2>&1 | FileCheck %s --check-prefix=STATS \
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; RUN: --check-prefix=IR --check-prefix=DEBUG
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; DEBUG: Not found through unique tail call chain: _Z3barv from main that actually called _Z3foob (found multiple possible chains)
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; DEBUG: Not found through unique tail call chain: _Z3barv from main that actually called _Z3foob (found multiple possible chains)
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; DEBUG: Not found through unique tail call chain: _Z3barv from main that actually called _Z3foob (found multiple possible chains)
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; DEBUG: Not found through unique tail call chain: _Z3barv from main that actually called _Z3foob (found multiple possible chains)
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;; Check that all calls in the IR are to the original functions, leading to a
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;; non-cold operator new call.
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source_filename = "tailcall-nonunique.cc"
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; Function Attrs: noinline
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; IR-LABEL: @_Z3barv()
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define dso_local ptr @_Z3barv() local_unnamed_addr #0 {
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entry:
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; IR: call ptr @_Znam(i64 10) #[[NOTCOLD:[0-9]+]]
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%call = tail call ptr @_Znam(i64 10) #2, !memprof !0, !callsite !9
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ret ptr %call
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}
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; Function Attrs: nobuiltin allocsize(0)
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declare ptr @_Znam(i64) #1
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; Function Attrs: noinline
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; IR-LABEL: @_Z5blah1v()
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define dso_local ptr @_Z5blah1v() local_unnamed_addr #0 {
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entry:
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; IR: call ptr @_Z3barv()
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%call = tail call ptr @_Z3barv()
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ret ptr %call
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}
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; Function Attrs: noinline
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; IR-LABEL: @_Z5blah2v()
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define dso_local ptr @_Z5blah2v() local_unnamed_addr #0 {
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entry:
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; IR: call ptr @_Z3barv()
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%call = tail call ptr @_Z3barv()
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ret ptr %call
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}
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; Function Attrs: noinline
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; IR-LABEL: @_Z4baz1v()
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define dso_local ptr @_Z4baz1v() local_unnamed_addr #0 {
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entry:
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; IR: call ptr @_Z5blah1v()
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%call = tail call ptr @_Z5blah1v()
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ret ptr %call
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}
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; Function Attrs: noinline
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; IR-LABEL: @_Z4baz2v()
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define dso_local ptr @_Z4baz2v() local_unnamed_addr #0 {
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entry:
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; IR: call ptr @_Z5blah2v()
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%call = tail call ptr @_Z5blah2v()
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ret ptr %call
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}
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; Function Attrs: noinline
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; IR-LABEL: @_Z3foob(i1 %b)
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define dso_local ptr @_Z3foob(i1 %b) local_unnamed_addr #0 {
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entry:
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br i1 %b, label %if.then, label %if.else
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if.then: ; preds = %entry
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; IR: call ptr @_Z4baz1v()
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%call = tail call ptr @_Z4baz1v()
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br label %return
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if.else: ; preds = %entry
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; IR: call ptr @_Z4baz2v()
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%call1 = tail call ptr @_Z4baz2v()
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br label %return
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return: ; preds = %if.else, %if.then
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%retval.0 = phi ptr [ %call, %if.then ], [ %call1, %if.else ]
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ret ptr %retval.0
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}
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; Function Attrs: noinline
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; IR-LABEL: @main()
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define dso_local i32 @main() local_unnamed_addr #0 {
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delete.end13:
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; IR: call ptr @_Z3foob(i1 true)
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%call = tail call ptr @_Z3foob(i1 true), !callsite !10
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; IR: call ptr @_Z3foob(i1 true)
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%call1 = tail call ptr @_Z3foob(i1 true), !callsite !11
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; IR: call ptr @_Z3foob(i1 false)
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%call2 = tail call ptr @_Z3foob(i1 false), !callsite !12
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; IR: call ptr @_Z3foob(i1 false)
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%call3 = tail call ptr @_Z3foob(i1 false), !callsite !13
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ret i32 0
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}
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; IR: attributes #[[NOTCOLD]] = { builtin allocsize(0) "memprof"="notcold" }
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; STATS: 4 memprof-context-disambiguation - Number of profiled callees found via multiple tail call chains
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attributes #0 = { noinline }
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attributes #1 = { nobuiltin allocsize(0) }
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attributes #2 = { builtin allocsize(0) }
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!0 = !{!1, !3, !5, !7}
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!1 = !{!2, !"notcold"}
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!2 = !{i64 3186456655321080972, i64 6307901912192269588}
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!3 = !{!4, !"cold"}
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!4 = !{i64 3186456655321080972, i64 6792096022461663180}
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!5 = !{!6, !"notcold"}
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!6 = !{i64 3186456655321080972, i64 8632435727821051414}
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!7 = !{!8, !"cold"}
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!8 = !{i64 3186456655321080972, i64 -3421689549917153178}
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!9 = !{i64 3186456655321080972}
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!10 = !{i64 8632435727821051414}
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!11 = !{i64 -3421689549917153178}
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!12 = !{i64 6307901912192269588}
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!13 = !{i64 6792096022461663180}
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