77 lines
2.7 KiB
LLVM
77 lines
2.7 KiB
LLVM
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; REQUIRES: x86-registered-target
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; Test devirtualization requiring promotion of local targets, where the
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; promotion is required by one devirtualization and needs to be updated
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; for a second devirtualization in the defining module as a post-pass
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; update.
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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_promote.ll
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; RUN: llvm-lto2 run %t3.o %t4.o -save-temps -use-new-pm -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=%t4.o,_ZN1B1fEi,p \
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; RUN: -r=%t4.o,test2,px \
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; RUN: -r=%t4.o,_ZTV1B,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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; 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: U _ZN1A1nEi.llvm.
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; Make sure that not only did _ZN1A1nEi get promoted (due to the
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; devirtualization in the other module) but the reference due to the
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; devirtualization in its defining module should be to the promoted
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; symbol.
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; NM-INDEX2-NOT: U _ZN1A1nEi
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; NM-INDEX2: T _ZN1A1nEi.llvm.
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; NM-INDEX2-NOT: U _ZN1A1nEi
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; The thin link devirtualizes all calls to _ZN1A1nEi.
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; PRINT: Devirtualized call to {{.*}} (_ZN1A1nEi)
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; We should devirt call to _ZN1A1nEi once in importing module and once
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; in original (exporting) module.
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; REMARK-COUNT-2: single-impl: devirtualized a call to _ZN1A1nEi.llvm.
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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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; CHECK-IR1-LABEL: define i32 @test
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define i32 @test(%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-IR1: %call = tail call i32 bitcast (void ()* @_ZN1A1nEi
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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-IR1-LABEL: ret i32
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; CHECK-IR1-LABEL: }
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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: %call4 = tail call i32 @_ZN1A1nEi
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declare i1 @llvm.type.test(i8*, metadata)
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declare void @llvm.assume(i1)
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attributes #0 = { noinline optnone }
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