b30971c4bb
This removes most of the handling of the relative block frequency
support added in 2018 in c73cec84c9, which
was disabled by default and never utilized in the thin link as expected.
Support for reading old Bitcode containing the record is maintained as
required for backwards compatibility requirements, as is the support for
parsing old LLVM assembly containing that information. Tests ensure that
this backwards compatibility is maintained.
This came up in the context of redundant BFI/DT computations which
existed largely for the purpose of computing this information
and are being addressed in PR176646.
44 lines
1.7 KiB
LLVM
44 lines
1.7 KiB
LLVM
;; Test to ensure that we can still read old bitcode containing the now
|
|
;; deprected PERMODULE_RELBF record. It should be read and the relbf itself
|
|
;; ignored.
|
|
|
|
; RUN: llvm-bcanalyzer -dump %S/Inputs/thinlto-function-summary-callgraph-relbf.bc | FileCheck %s
|
|
; RUN: llvm-dis -o - %S/Inputs/thinlto-function-summary-callgraph-relbf.bc | FileCheck %s --check-prefix=DIS
|
|
|
|
; CHECK: <SOURCE_FILENAME
|
|
; CHECK-NEXT: <GLOBALVAR
|
|
; CHECK-NEXT: <FUNCTION
|
|
; "func"
|
|
; CHECK-NEXT: <FUNCTION op0=17 op1=4
|
|
; CHECK: <GLOBALVAL_SUMMARY_BLOCK
|
|
; CHECK-NEXT: <VERSION
|
|
; CHECK-NEXT: <FLAGS
|
|
; See if the call to func is registered.
|
|
; CHECK-NEXT: <PERMODULE_RELBF {{.*}} op4=1 {{.*}} op9=256
|
|
; CHECK-NEXT: </GLOBALVAL_SUMMARY_BLOCK>
|
|
; CHECK: <STRTAB_BLOCK
|
|
; CHECK-NEXT: blob data = 'undefinedglobmainfunc{{.*}}'
|
|
|
|
|
|
; ModuleID = 'thinlto-function-summary-callgraph.ll'
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
; Function Attrs: nounwind uwtable
|
|
define i32 @main() #0 {
|
|
entry:
|
|
call void (...) @func()
|
|
%u = load i32, i32* @undefinedglob
|
|
ret i32 %u
|
|
}
|
|
|
|
declare void @func(...) #1
|
|
@undefinedglob = external global i32
|
|
|
|
; DIS: ^0 = module: (path: "{{.*}}", hash: (0, 0, 0, 0, 0))
|
|
; DIS: ^1 = gv: (name: "func") ; guid = 7289175272376759421
|
|
;; We should have ignored the relbf in the old bitcode, and it no longer shows
|
|
;; up in the summary.
|
|
; DIS: ^2 = gv: (name: "main", summaries: (function: (module: ^0, flags: (linkage: external, visibility: default, notEligibleToImport: 0, live: 0, dsoLocal: 0, canAutoHide: 0, importType: definition), insts: 3, calls: ((callee: ^1)), refs: (readonly ^3)))) ; guid = 15822663052811949562
|
|
; DIS: ^3 = gv: (name: "undefinedglob") ; guid = 18036901804029949403
|