200cc952a2
D63932 added a module flag to indicate that we are executing the regular LTO post merge pipeline, so that GlobalDCE could perform more aggressive optimization for Dead Virtual Function Elimination. This caused issues trying to reuse bitcode that had already been through the LTO pipeline (see context in D139816). Instead support this by passing down a parameter flag to the GlobalDCEPass constructor, which is the more usual way for indicating this information. Most test changes are to remove incidental uses of this flag. Of the 2 real uses, llvm/test/LTO/ARM/lto-linking-metadata.ll is now obsolete and removed in this patch, and the virtual-functions-visibility-post-lto.ll test is updated to use the regular LTO default pipeline where this parameter is set to true. Differential Revision: https://reviews.llvm.org/D153655
45 lines
2.0 KiB
LLVM
45 lines
2.0 KiB
LLVM
; Check that we can run WPD export using opt -passes=wholeprogramdevirt while
|
|
; loading/saving index from/to bitcode
|
|
; RUN: llvm-as %s -o %t.bc
|
|
; RUN: llvm-as %p/Inputs/devirt-single-impl2-index.ll -o %t.index.bc
|
|
; RUN: opt %s -S -passes=wholeprogramdevirt -whole-program-visibility -wholeprogramdevirt-read-summary=%t.index.bc \
|
|
; RUN: -wholeprogramdevirt-summary-action=export \
|
|
; RUN: -wholeprogramdevirt-write-summary=%t2.index.bc -o /dev/null
|
|
; RUN: llvm-dis %t2.index.bc -o - | FileCheck %s
|
|
|
|
; Check that opt fails to use summaries which don't contain regular LTO module
|
|
; when performing export.
|
|
; RUN: llvm-as %p/Inputs/devirt-bad-index.ll -o %t-bad.index.bc
|
|
; RUN: not opt %s -S -passes=wholeprogramdevirt -whole-program-visibility -wholeprogramdevirt-read-summary=%t-bad.index.bc \
|
|
; RUN: -wholeprogramdevirt-summary-action=export -o /dev/null 2>&1 | FileCheck %s --check-prefix=MISSING-MODULE
|
|
|
|
; Check single impl devirtulation in summary
|
|
; CHECK: typeid: (name: "_ZTS1A", summary: (typeTestRes: (kind: unknown, sizeM1BitWidth: 0), wpdResolutions: ((offset: 0, wpdRes: (kind: singleImpl, singleImplName: "_ZNK1A1fEv"))))) ; guid
|
|
|
|
; MISSING-MODULE: combined summary should contain Regular LTO module
|
|
|
|
source_filename = "ld-temp.o"
|
|
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
|
|
target triple = "x86_64-unknown-linux-gnu"
|
|
|
|
%struct.A = type { ptr }
|
|
|
|
$_ZTV1A = comdat any
|
|
|
|
@_ZTV1A = weak_odr hidden unnamed_addr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr @_ZTI1A, ptr @_ZNK1A1fEv] }, comdat, align 8, !type !0, !type !1
|
|
@_ZTI1A = external hidden constant { ptr, ptr }, align 8
|
|
define available_externally hidden i32 @_ZNK1A1fEv(ptr %this) unnamed_addr align 2 {
|
|
entry:
|
|
ret i32 3
|
|
}
|
|
|
|
!llvm.ident = !{!2}
|
|
!llvm.module.flags = !{!3, !4, !5}
|
|
|
|
!0 = !{i64 16, !"_ZTS1A"}
|
|
!1 = !{i64 16, !"_ZTSM1AKFivE.virtual"}
|
|
!2 = !{!"clang version 10.0.0 (trunk 373596)"}
|
|
!3 = !{i32 1, !"wchar_size", i32 4}
|
|
!4 = !{i32 1, !"EnableSplitLTOUnit", i32 1}
|
|
!5 = !{i32 1, !"ThinLTO", i32 0}
|