forked from OSchip/llvm-project
113 lines
4.1 KiB
LLVM
113 lines
4.1 KiB
LLVM
;; Test that pure virtual base is handled correctly.
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;; Index based WPD
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;; Generate unsplit module with summary for ThinLTO index-based WPD.
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; RUN: opt --thinlto-bc -o %t1a.o %s
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; RUN: llvm-lto2 run %t1a.o -save-temps -pass-remarks=. \
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; RUN: -whole-program-visibility \
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; RUN: -o %t3a \
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; RUN: -r=%t1a.o,_start,plx \
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; RUN: -r=%t1a.o,_ZTV1A,p \
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; RUN: -r=%t1a.o,_ZTV1B,p \
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; RUN: -r=%t1a.o,_ZN1A1fEi,p \
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; RUN: -r=%t1a.o,_ZN1A1nEi,p \
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; RUN: -r=%t1a.o,_ZN1B1fEi,p \
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; RUN: -r=%t1a.o,__cxa_pure_virtual, \
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; RUN: 2>&1 | FileCheck %s --check-prefix=REMARK
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; RUN: llvm-dis %t3a.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR
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;; Hybrid WPD
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;; Generate split module with summary for hybrid Thin/Regular LTO WPD.
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; RUN: opt --thinlto-bc --thinlto-split-lto-unit -o %t1b.o %s
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; RUN: llvm-lto2 run %t1b.o -save-temps -pass-remarks=. \
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; RUN: -whole-program-visibility \
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; RUN: -o %t3b \
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; RUN: -r=%t1b.o,_start,plx \
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; RUN: -r=%t1b.o,_ZTV1A, \
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; RUN: -r=%t1b.o,_ZTV1B, \
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; RUN: -r=%t1b.o,__cxa_pure_virtual, \
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; RUN: -r=%t1b.o,_ZN1A1fEi,p \
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; RUN: -r=%t1b.o,_ZN1A1nEi,p \
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; RUN: -r=%t1b.o,_ZN1B1fEi,p \
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; RUN: -r=%t1b.o,_ZTV1A,p \
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; RUN: -r=%t1b.o,_ZTV1B,p \
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; RUN: -r=%t1b.o,_ZN1A1nEi, \
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; RUN: -r=%t1b.o,_ZN1B1fEi, \
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; RUN: -r=%t1b.o,__cxa_pure_virtual, \
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; RUN: 2>&1 | FileCheck %s --check-prefix=REMARK
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; RUN: llvm-dis %t3b.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR
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;; Regular LTO WPD
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; RUN: opt -o %t1c.o %s
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; RUN: llvm-lto2 run %t1c.o -save-temps -pass-remarks=. \
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; RUN: -whole-program-visibility \
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; RUN: -o %t3c \
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; RUN: -r=%t1c.o,_start,plx \
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; RUN: -r=%t1c.o,_ZTV1A,p \
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; RUN: -r=%t1c.o,_ZTV1B,p \
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; RUN: -r=%t1c.o,_ZN1A1fEi,p \
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; RUN: -r=%t1c.o,_ZN1A1nEi,p \
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; RUN: -r=%t1c.o,_ZN1B1fEi,p \
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; RUN: -r=%t1c.o,__cxa_pure_virtual, \
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; RUN: 2>&1 | FileCheck %s --check-prefix=REMARK
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; RUN: llvm-dis %t3c.0.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR
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; REMARK-DAG: single-impl: devirtualized a call to _ZN1A1nEi
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-grtev4-linux-gnu"
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%struct.A = type { i32 (...)** }
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%struct.B = type { %struct.A }
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@_ZTV1A = linkonce_odr unnamed_addr constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (void ()* @__cxa_pure_virtual to i8*), i8* bitcast (void ()* @__cxa_pure_virtual to i8*)] }, !type !0, !vcall_visibility !2
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@_ZTV1B = linkonce_odr unnamed_addr constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* undef, i8* bitcast (i32 (%struct.B*, i32)* @_ZN1B1fEi to i8*), i8* bitcast (i32 (%struct.A*, i32)* @_ZN1A1nEi to i8*)] }, !type !0, !type !1, !vcall_visibility !2
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;; Prevent the vtables from being dead code eliminated.
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@llvm.used = appending global [2 x i8*] [ i8* bitcast ( { [4 x i8*] }* @_ZTV1A to i8*), i8* bitcast ( { [4 x i8*] }* @_ZTV1B to i8*)]
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; CHECK-IR-LABEL: define dso_local i32 @_start
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define i32 @_start(%struct.A* %obj, i32 %a) {
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entry:
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%0 = bitcast %struct.A* %obj to i8***
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%vtable = load i8**, i8*** %0
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%1 = bitcast i8** %vtable to i8*
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%p = call i1 @llvm.type.test(i8* %1, metadata !"_ZTS1A")
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call void @llvm.assume(i1 %p)
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%fptrptr = getelementptr i8*, i8** %vtable, i32 1
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%2 = bitcast i8** %fptrptr to i32 (%struct.A*, i32)**
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%fptr1 = load i32 (%struct.A*, i32)*, i32 (%struct.A*, i32)** %2, align 8
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;; Check that the call was devirtualized.
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; CHECK-IR: %call = tail call i32 @_ZN1A1nEi
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; CHECK-NODEVIRT-IR: %call = tail call i32 %fptr1
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%call = tail call i32 %fptr1(%struct.A* nonnull %obj, i32 %a)
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ret i32 %call
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}
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; CHECK-IR-LABEL: ret i32
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; CHECK-IR-NEXT: }
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declare i1 @llvm.type.test(i8*, metadata)
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declare void @llvm.assume(i1)
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declare void @__cxa_pure_virtual() unnamed_addr
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define linkonce_odr i32 @_ZN1A1fEi(%struct.A* %this, i32 %a) #0 {
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ret i32 0
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}
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define linkonce_odr i32 @_ZN1A1nEi(%struct.A* %this, i32 %a) #0 {
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ret i32 0
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}
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define linkonce_odr i32 @_ZN1B1fEi(%struct.B* %this, i32 %a) #0 {
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ret i32 0
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}
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;; Make sure we don't inline or otherwise optimize out the direct calls.
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attributes #0 = { noinline optnone }
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!0 = !{i64 16, !"_ZTS1A"}
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!1 = !{i64 16, !"_ZTS1B"}
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!2 = !{i64 0}
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