derek.holloway
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33 lines
1.6 KiB
LLVM
33 lines
1.6 KiB
LLVM
; Test to ensure that we can internalize values produced from two rounds
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; of ThinLTO promotion, so they end up with two ".llvm.${hash}" suffixes.
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; Only the second should be stripped when consulting the index to locate the
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; summary.
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;
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; Note that this cannot happen currently via clang, but in other use cases such
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; as the Rust compiler which does a first round of ThinLTO on library code,
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; producing bitcode, and a second round on the final binary.
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;
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; In this case we assume a prior round of ThinLTO has promoted @foo, and
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; subsequent optimization created an internal switch table expansion variable
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; that is internal and contains the promoted name of the enclosing function.
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; This variable will be promoted in the second round of ThinLTO if @foo is
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; imported again.
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; RUN: opt -module-summary -o %t.bc %s
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; RUN: opt -module-summary -o %t-main.bc %S/Inputs/thinlto-internalize-doublepromoted.ll
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; RUN: llvm-lto -thinlto-action=thinlink %t.bc %t-main.bc -o %t-index.bc
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; RUN: llvm-lto -thinlto-action=internalize -exported-symbol=main -thinlto-index %t-index.bc %t.bc -o %t.internalize.bc
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; RUN: llvm-dis %t.internalize.bc -o - | FileCheck %s
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target datalayout = "e-m:o-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-apple-macosx10.15.0"
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; CHECK: @switch.table.foo.llvm.123.llvm.0 = hidden unnamed_addr constant
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@switch.table.foo.llvm.123 = private unnamed_addr constant [10 x i8] c"\00\01\02\03\00\00\00\00\00\09", align 1
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; CHECK: define hidden void @foo.llvm.123()
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define hidden void @foo.llvm.123() {
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store i8 1, ptr @switch.table.foo.llvm.123, align 8
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ret void
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}
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