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https://github.com/c64scene-ar/llvm-6502.git
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8577eaf8e6
Rather than slurping in and splatting out the whole ctor list, preserve the existing array entries without trying to understand them. Only remove the entries that we know we can optimize away. This way we don't need to wire through priority and comdats or anything else we might add. Fixes a linker issue where the .init_array or .ctors entry would point to discarded initialization code if the comdat group from the TU with the faulty global_ctors entry was dropped. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@218337 91177308-0d34-0410-b5e6-96231b3b80d8
38 lines
1.1 KiB
LLVM
38 lines
1.1 KiB
LLVM
; RUN: opt -globalopt -S < %s | FileCheck %s
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$comdat_global = comdat any
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@comdat_global = weak_odr global i8 0, comdat $comdat_global
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@simple_global = internal global i8 0
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; CHECK: @comdat_global = weak_odr global i8 0, comdat $comdat_global
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; CHECK: @simple_global = internal global i8 42
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@llvm.global_ctors = appending global [2 x { i32, void ()*, i8* }] [
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{ i32, void ()*, i8* } { i32 65535, void ()* @init_comdat_global, i8* @comdat_global },
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{ i32, void ()*, i8* } { i32 65535, void ()* @init_simple_global, i8* null }
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]
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; CHECK: @llvm.global_ctors = appending global [1 x { i32, void ()*, i8* }]
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; CHECK: [{ i32, void ()*, i8* } { i32 65535, void ()* @init_comdat_global, i8* @comdat_global }]
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define void @init_comdat_global() {
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store i8 42, i8* @comdat_global
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ret void
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}
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; CHECK: define void @init_comdat_global()
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define internal void @init_simple_global() comdat $comdat_global {
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store i8 42, i8* @simple_global
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ret void
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}
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; CHECK-NOT: @init_simple_global()
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define i8* @use_simple() {
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ret i8* @simple_global
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}
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; CHECK: define i8* @use_simple()
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define i8* @use_comdat() {
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ret i8* @comdat_global
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}
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; CHECK: define i8* @use_comdat()
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