e4b27359fd
The inrange attribute is not relevant to the optimizations being tested here. Additionally, all the inrange attributes in these files don't actually carry any additional information, as the "range" covers the whole object.
85 lines
2.6 KiB
LLVM
85 lines
2.6 KiB
LLVM
; REQUIRES: x86-registered-target
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; Test that index-based devirtualization in the presence of external
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; vtables with the same name (with comdat) succeeds.
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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_external_comdat_same_guid.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,use_B,px \
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; RUN: -r=%t3.o,test,px \
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; RUN: -r=%t3.o,_ZTV1B,px \
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; RUN: -r=%t3.o,_ZN1B1fEi,px \
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; RUN: -r=%t3.o,_ZN1B1nEi,px \
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; RUN: -r=%t4.o,_ZTV1B,x \
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; RUN: -r=%t4.o,_ZN1B1fEi,x \
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; RUN: -r=%t4.o,_ZN1A1nEi,x \
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; RUN: -r=%t4.o,test2,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-dis %t5.2.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR2
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; PRINT-DAG: Devirtualized call to {{.*}} (_ZN1A1nEi)
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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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source_filename = "-"
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%struct.A = type { ptr }
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%struct.B = type { %struct.A }
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$_ZTV1B = comdat any
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@_ZTV1B = constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr undef, ptr @_ZN1B1fEi, ptr @_ZN1B1nEi] }, comdat, !type !0, !type !1
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define i32 @_ZN1B1fEi(ptr %this, i32 %a) #0 comdat($_ZTV1B) {
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ret i32 0;
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}
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define i32 @_ZN1B1nEi(ptr %this, i32 %a) #0 comdat($_ZTV1B) {
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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, 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 devirtualized.
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; CHECK-IR1: tail call i32 {{.*}}@_ZN1A1nEi
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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 devirtualized.
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; CHECK-IR2: tail call i32 @_ZN1A1nEi
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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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