derek.holloway
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56 lines
1.9 KiB
LLVM
56 lines
1.9 KiB
LLVM
; 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-lto -thinlto-action=run %t3.o %t4.o --thinlto-save-temps=%t5. \
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; RUN: -whole-program-visibility \
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; RUN: --pass-remarks=. \
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; RUN: --exported-symbol=test \
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; RUN: --exported-symbol=test2 \
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; RUN: --exported-symbol=_ZTV1B 2>&1 | FileCheck %s --check-prefix=REMARK
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; RUN: llvm-dis %t5.0.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR1
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; RUN: llvm-dis %t5.1.4.opt.bc -o - | FileCheck %s --check-prefix=CHECK-IR2
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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 { ptr }
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; CHECK-IR1-LABEL: 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-IR1-LABEL: ret i32
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; CHECK-IR1-LABEL: }
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; CHECK-IR2: define noundef 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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