57 lines
1.8 KiB
LLVM
57 lines
1.8 KiB
LLVM
; REQUIRES: x86-registered-target
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; Test index-based devirtualization when one copy is an alias.
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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_alias.ll
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; RUN: llvm-lto2 run %t3.o %t4.o -save-temps -pass-remarks=. \
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; RUN: -whole-program-visibility \
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; RUN: -wholeprogramdevirt-print-index-based \
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; RUN: -o %t5 \
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; RUN: -r=%t3.o,test,px \
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; RUN: -r=%t3.o,_ZTV1D, \
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; RUN: -r=%t3.o,_ZN1D1mEi, \
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; RUN: -r=%t4.o,_ZN1D1mEi,p \
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; RUN: -r=%t4.o,_ZTV1D,px \
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; RUN: -r=%t4.o,some_name,px \
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; RUN: 2>&1 | FileCheck %s --check-prefix=REMARK --check-prefix=PRINT
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; RUN: llvm-dis %t5.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR1
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; PRINT-DAG: Devirtualized call to {{.*}} (_ZN1D1mEi)
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; REMARK-DAG: single-impl: devirtualized a call to _ZN1D1mEi
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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.D = type { ptr }
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@_ZTV1D = linkonce_odr constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr undef, ptr @_ZN1D1mEi] }, !type !3
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; CHECK-IR1-LABEL: define i32 @test
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define i32 @test(ptr %obj2, i32 %a) {
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entry:
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%vtable2 = load ptr, ptr %obj2
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%p2 = call i1 @llvm.type.test(ptr %vtable2, metadata !"_ZTS1D")
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call void @llvm.assume(i1 %p2)
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%fptr33 = load ptr, ptr %vtable2, align 8
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; Check that the call was devirtualized.
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; CHECK-IR1: %call4 = tail call i32 @_ZN1D1mEi
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%call4 = tail call i32 %fptr33(ptr nonnull %obj2, i32 %a)
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ret i32 %call4
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}
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; CHECK-IR1-LABEL: ret i32
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; CHECK-IR1-LABEL: }
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declare i1 @llvm.type.test(ptr, metadata)
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declare void @llvm.assume(i1)
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declare i32 @_ZN1D1mEi(ptr %this, i32 %a)
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attributes #0 = { noinline optnone }
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!3 = !{i64 16, !"_ZTS1D"}
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