derek.holloway
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100 lines
2.9 KiB
LLVM
100 lines
2.9 KiB
LLVM
; Test that renaming is still performed even when we try to avoid always renaming
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; on promotion. The devirtualization promotes an internal virtual target to a
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; uniqued hidden symbol from a static function, and later on the static funciton
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; is promoted to the same hidden symbol.
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; Set up
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; RUN: rm -rf %t
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; RUN: mkdir -p %t
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; RUN: split-file %s %t
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; RUN: opt -thinlto-bc %t/a.ll -o %t/a.bc
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; RUN: opt -thinlto-bc %t/b.ll -o %t/b.bc
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; RUN: llvm-lto2 run %t/a.bc %t/b.bc \
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; RUN: --whole-program-visibility-enabled-in-lto=true \
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; RUN: -always-rename-promoted-locals=false \
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; RUN: -save-temps -o %t/lto-out \
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; RUN: -r %t/a.bc,test,px \
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; RUN: -r %t/b.bc,_ZN1B1fEi,p \
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; RUN: -r %t/b.bc,test2,px \
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; RUN: -r %t/b.bc,_ZTV1B,px
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; RUN: llvm-nm %t/lto-out.1 | FileCheck %s --check-prefix=NM-INDEX1
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; RUN: llvm-nm %t/lto-out.2 | FileCheck %s --check-prefix=NM-INDEX2
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; NM-INDEX1: U _ZN1A1nEi.llvm.
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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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; RUN: llvm-dis %t/lto-out.1.4.opt.bc -o - | FileCheck %s --check-prefix=OPT-INDEX1
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; RUN: llvm-dis %t/lto-out.2.4.opt.bc -o - | FileCheck %s --check-prefix=OPT-INDEX2
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; OPT-INDEX1: %call = tail call i32 @_ZN1A1nEi.llvm.
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; OPT-INDEX1: declare void @_ZN1A1nEi.llvm.
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; OPT-INDEX2: ptr @_ZN1A1nEi.llvm.
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; OPT-INDEX2: define hidden i32 @_ZN1A1nEi.llvm.
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; OPT-INDEX2: tail call i32 @_ZN1A1nEi.llvm.
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;--- a.ll
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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-pc-linux-gnu"
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%struct.A = type { ptr }
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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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; the call was devirtualized.
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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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declare i1 @llvm.type.test(ptr, metadata)
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declare void @llvm.assume(i1)
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;--- b.ll
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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-pc-linux-gnu"
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%struct.A = type { ptr }
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%struct.B = type { %struct.A }
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@_ZTV1B = constant { [4 x ptr] } { [4 x ptr] [ptr null, ptr poison, ptr @_ZN1B1fEi, ptr @_ZN1A1nEi] }, !type !0, !type !1
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define i32 @_ZN1B1fEi(ptr %this, i32 %a) #0 {
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ret i32 0;
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}
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define internal i32 @_ZN1A1nEi(ptr %this, i32 %a) #0 {
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ret i32 0;
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}
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define i32 @test2(ptr %obj, i32 %a) {
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entry:
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%vtable2 = load ptr, ptr %obj
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%p2 = call i1 @llvm.type.test(ptr %vtable2, metadata !"_ZTS1B")
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call void @llvm.assume(i1 %p2)
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%fptrptr = getelementptr ptr, ptr %vtable2, i32 1
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%fptr33 = load ptr, ptr %fptrptr, align 8
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%call4 = tail call i32 %fptr33(ptr nonnull %obj, i32 %a)
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ret i32 %call4
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}
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attributes #0 = { noinline optnone }
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declare i1 @llvm.type.test(ptr, metadata)
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declare void @llvm.assume(i1)
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!0 = !{i64 16, !"_ZTS1A"}
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!1 = !{i64 16, !"_ZTS1B"}
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