8bcb073705
When set, the compiler will use separate unique sections for global symbols in named special sections (e.g. symbols that are annotated with __attribute__((section(...)))). Doing so enables linker GC to collect unused symbols without having to use a different section per-symbol.
37 lines
934 B
LLVM
37 lines
934 B
LLVM
; Test that global values with explicit sections are placed into unique sections.
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; RUN: llc < %s | FileCheck %s
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; RUN: llc -separate-named-sections < %s | FileCheck %s --check-prefix=SEPARATE
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target triple="x86_64-unknown-unknown-elf"
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define i32 @f() section "custom_text" {
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entry:
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ret i32 0
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}
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define i32 @g() section "custom_text" {
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entry:
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ret i32 0
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}
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; CHECK: .section custom_text,"ax",@progbits{{$}}
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; CHECK: f:
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; CHECK: g:
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; SEPARATE: .section custom_text,"ax",@progbits,unique,1{{$}}
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; SEPARATE: f:
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; SEPARATE: .section custom_text,"ax",@progbits,unique,2{{$}}
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; SEPARATE: g:
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@i = global i32 0, section "custom_data", align 8
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@j = global i32 0, section "custom_data", align 8
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; CHECK: .section custom_data,"aw",@progbits{{$}}
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; CHECK: i:
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; CHECK: j:
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; SEPARATE: .section custom_data,"aw",@progbits,unique,3{{$}}
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; SEPARATE: i:
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; SEPARATE: .section custom_data,"aw",@progbits,unique,4{{$}}
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; SEPARATE: j:
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