71 lines
2.1 KiB
LLVM
71 lines
2.1 KiB
LLVM
; REQUIRES: x86-registered-target
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; Test that index-based devirtualization in the presence of same-named
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; local vtables in same named source files fails.
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; Generate unsplit module with summary for ThinLTO index-based WPD.
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; RUN: opt -thinlto-bc -o %t3.o %s
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; RUN: opt -thinlto-bc -o %t4.o %p/Inputs/devirt_local_same_guid.ll
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; RUN: llvm-lto2 run %t3.o %t4.o -save-temps -pass-remarks=. \
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; RUN: -wholeprogramdevirt-print-index-based \
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; RUN: -o %t5 \
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; RUN: -r=%t3.o,use_B,px \
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; RUN: -r=%t3.o,test,px \
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; RUN: -r=%t4.o,test2,px
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; RUN: llvm-dis %t5.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR1
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; RUN: llvm-dis %t5.2.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR2
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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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source_filename = "-"
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%struct.A = type { ptr }
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%struct.B = type { %struct.A }
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@_ZTV1B = internal constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr undef, ptr @_ZN1B1fEi, ptr @_ZN1B1nEi] }, !type !0, !type !1
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define internal i32 @_ZN1B1fEi(ptr %this, i32 %a) #0 {
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ret i32 0;
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}
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define internal i32 @_ZN1B1nEi(ptr %this, i32 %a) #0 {
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ret i32 0;
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}
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; Ensures that vtable of B is live so that we will attempt devirt.
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define dso_local i32 @use_B(ptr %a) {
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entry:
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store ptr getelementptr inbounds ({ [4 x ptr] }, ptr @_ZTV1B, i64 0, inrange i32 0, i64 2), ptr %a, align 8
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ret i32 0
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}
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; CHECK-IR1: define i32 @test(
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define i32 @test(ptr %obj, i32 %a) {
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entry:
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%vtable = load ptr, ptr %obj
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%p = call i1 @llvm.type.test(ptr %vtable, metadata !"_ZTS1A")
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call void @llvm.assume(i1 %p)
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%fptrptr = getelementptr ptr, ptr %vtable, i32 1
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%fptr1 = load ptr, ptr %fptrptr, align 8
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; Check that the call was not devirtualized.
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; CHECK-IR1: %call = tail call i32 %fptr1
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%call = tail call i32 %fptr1(ptr nonnull %obj, i32 %a)
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ret i32 %call
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}
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; CHECK-IR2: define i32 @test2
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; Check that the call was not devirtualized.
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; CHECK-IR2: %call4 = tail call i32 %fptr
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declare i1 @llvm.type.test(ptr, metadata)
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declare void @llvm.assume(i1)
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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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