llvm-6502/test/MC/ELF/many-sections.s
Rafael Espindola 9f299abc05 Omit unused section symbols from the symbol table.
Section symbols exist as an optimization: instead of having multiple relocations
point to different symbols, many of them can point to a single section symbol.

When that optimization is unused, a section symbol is also unused and adds no
extra information to the object file.

This saves a bit of space on the object files and makes the output of
llvm-objdump -t easier to read and consequently some tests get quite a bit
simpler.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@239045 91177308-0d34-0410-b5e6-96231b3b80d8
2015-06-04 15:33:30 +00:00

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2.2 KiB
ArmAsm

// RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o %t
// RUN: llvm-readobj -s %t | FileCheck --check-prefix=SECTIONS %s
// RUN: llvm-readobj -t %t | FileCheck --check-prefix=SYMBOLS %s
// Test that we don't create a .symtab_shndx since we are one section short of
// SHN_LORESERVE (0xFF00).
// SECTIONS-NOT: Name: .symtab_shndx
// Check the last referenced section.
// SYMBOLS: Name: (0)
// SYMBOLS: Value: 0x0
// SYMBOLS: Size: 0
// SYMBOLS: Binding: Local (0x0)
// SYMBOLS: Type: Section (0x3)
// SYMBOLS: Other: 0
// SYMBOLS: Section: zed (0xFEFF)
// SYMBOLS-NEXT: }
// SYMBOLS-NEXT:]
.macro gen_sections4 x
.section a\x
.section b\x
.section c\x
.section d\x
.endm
.macro gen_sections8 x
gen_sections4 a\x
gen_sections4 b\x
.endm
.macro gen_sections16 x
gen_sections8 a\x
gen_sections8 b\x
.endm
.macro gen_sections32 x
gen_sections16 a\x
gen_sections16 b\x
.endm
.macro gen_sections64 x
gen_sections32 a\x
gen_sections32 b\x
.endm
.macro gen_sections128 x
gen_sections64 a\x
gen_sections64 b\x
.endm
.macro gen_sections256 x
gen_sections128 a\x
gen_sections128 b\x
.endm
.macro gen_sections512 x
gen_sections256 a\x
gen_sections256 b\x
.endm
.macro gen_sections1024 x
gen_sections512 a\x
gen_sections512 b\x
.endm
.macro gen_sections2048 x
gen_sections1024 a\x
gen_sections1024 b\x
.endm
.macro gen_sections4096 x
gen_sections2048 a\x
gen_sections2048 b\x
.endm
.macro gen_sections8192 x
gen_sections4096 a\x
gen_sections4096 b\x
.endm
.macro gen_sections16384 x
gen_sections8192 a\x
gen_sections8192 b\x
.endm
.macro gen_sections32768 x
gen_sections16384 a\x
gen_sections16384 b\x
.endm
gen_sections32768 a
gen_sections16384 b
gen_sections8192 c
gen_sections4096 d
gen_sections2048 e
gen_sections1024 f
gen_sections512 g
gen_sections128 h
gen_sections64 i
gen_sections32 j
gen_sections16 k
gen_sections8 l
.section foo
.section bar
.section zed
.long zed