mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
b3b970744d
Imported functions and variable get the visibility from the module supplying the definition. However, non-imported definitions do not get the visibility from (ELF) the most constraining visibility among all modules (Mach-O) the visibility of the prevailing definition. This patch * adds visibility bits to GlobalValueSummary::GVFlags * computes the result visibility and propagates it to all definitions Protected/hidden can imply dso_local which can enable some optimizations (this is stronger than GVFlags::DSOLocal because the implied dso_local can be leveraged for ELF -shared while default visibility dso_local has to be cleared for ELF -shared). Note: we don't have summaries for declarations, so for ELF if a declaration has the most constraining visibility, the result visibility may not be that one. Differential Revision: https://reviews.llvm.org/D92900
27 lines
1.1 KiB
LLVM
27 lines
1.1 KiB
LLVM
; RUN: opt -module-summary %s -o %t1.bc
|
|
; RUN: opt -module-summary %p/Inputs/funcimport_alwaysinline.ll -o %t2.bc
|
|
|
|
; RUN: llvm-lto2 run %t1.bc %t2.bc -o %t.o -save-temps \
|
|
; RUN: -r=%t1.bc,foo,plx \
|
|
; RUN: -r=%t2.bc,main,plx \
|
|
; RUN: -r=%t2.bc,foo,l \
|
|
; RUN: -import-instr-limit=0
|
|
; RUN: llvm-dis %t.o.2.3.import.bc -o - | FileCheck %s --check-prefix=CHECK1
|
|
; RUN: llvm-dis %t.o.index.bc -o - | FileCheck %s --check-prefix=CHECK2
|
|
|
|
; foo() being always_inline should be imported irrespective of the
|
|
; instruction limit
|
|
; CHECK1: define available_externally void @foo()
|
|
|
|
target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
; Function Attrs: alwaysinline nounwind uwtable
|
|
define void @foo() #0 {
|
|
entry:
|
|
ret void
|
|
}
|
|
|
|
attributes #0 = { alwaysinline nounwind uwtable }
|
|
; CHECK2: ^2 = gv: (guid: {{.*}}, summaries: (function: (module: ^0, flags: (linkage: external, visibility: default, notEligibleToImport: 0, live: 1, dsoLocal: 1, canAutoHide: 0), insts: 1, funcFlags: (readNone: 0, readOnly: 0, noRecurse: 0, returnDoesNotAlias: 0, noInline: 0, alwaysInline: 1))))
|