derek.holloway
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71 lines
2.4 KiB
LLVM
71 lines
2.4 KiB
LLVM
; REQUIRES: x86-registered-target
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; Test index-based devirtualization when first copy is available_externally,
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; which doesn't have type metadata. We should use the strong external
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; def in the other module to devirtualize.
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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_available_externally.ll
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; The available_externally copy should not get vTableFuncs information in its
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; summary entry, but the external def should.
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; RUN: llvm-dis -o - %t3.o | FileCheck %s --check-prefix=AVAILEXTERNAL
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; AVAILEXTERNAL: gv: (name: "_ZTV1D"
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; AVAILEXTERNAL-NOT: vTableFuncs
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; AVAILEXTERNAL-SAME: ; guid =
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; RUN: llvm-dis -o - %t4.o | FileCheck %s --check-prefix=EXTERNAL
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; EXTERNAL: gv: (name: "_ZTV1D", {{.*}} vTableFuncs: ((virtFunc:
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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: 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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; RUN: llvm-nm %t5.1 | FileCheck %s --check-prefix=NM-INDEX1
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; RUN: llvm-nm %t5.2 | FileCheck %s --check-prefix=NM-INDEX2
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; NM-INDEX1-DAG: U _ZN1D1mEi
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; NM-INDEX2-DAG: T _ZN1D1mEi
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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 = available_externally constant { [3 x ptr] } { [3 x ptr] [ptr null, ptr undef, ptr @_ZN1D1mEi] }
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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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