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-rw-r--r--llvm/test/tools/llvm-objcopy/ELF/compress-sections.s128
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diff --git a/llvm/test/tools/llvm-objcopy/ELF/compress-sections.s b/llvm/test/tools/llvm-objcopy/ELF/compress-sections.s
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index 000000000000..e6fa86068a1a
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+++ b/llvm/test/tools/llvm-objcopy/ELF/compress-sections.s
@@ -0,0 +1,128 @@
+# REQUIRES: x86-registered-target, zlib, zstd
+
+# RUN: rm -rf %t && mkdir %t && cd %t
+# RUN: llvm-mc -filetype=obj -triple=x86_64 %s -o a.o
+## '*0=none' wins because it is the last. '*0' sections are decompressed (if originally compressed) or kept unchanged (if uncompressed).
+## No section is named 'nomatch'. The third option is a no-op.
+# RUN: llvm-objcopy a.o out --compress-sections='*0=zlib' --compress-sections '*0=none' --compress-sections 'nomatch=none' 2>&1 | count 0
+# RUN: llvm-readelf -S out | FileCheck %s --check-prefix=CHECK1
+
+# CHECK1: Name Type Address Off Size ES Flg Lk Inf Al
+# CHECK1: .text PROGBITS [[#%x,TEXT:]] [[#%x,]] [[#%x,]] 00 AX 0 0 4
+# CHECK1: foo0 PROGBITS [[#%x,FOO0:]] [[#%x,]] [[#%x,]] 00 A 0 0 8
+# CHECK1-NEXT: .relafoo0 RELA [[#%x,]] [[#%x,]] [[#%x,]] 18 I 11 3 8
+# CHECK1-NEXT: foo1 PROGBITS [[#%x,FOO1:]] [[#%x,]] [[#%x,]] 00 A 0 0 8
+# CHECK1-NEXT: .relafoo1 RELA [[#%x,]] [[#%x,]] [[#%x,]] 18 I 11 5 8
+# CHECK1: nonalloc0 PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 00 0 0 8
+# CHECK1-NEXT: .relanonalloc0 RELA [[#%x,]] [[#%x,]] [[#%x,]] 18 I 11 7 8
+# CHECK1-NEXT: nonalloc1 PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 00 0 0 8
+# CHECK1-NEXT: .debug_str PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 01 MS 0 0 1
+
+## Mixing zlib and zstd.
+# RUN: llvm-objcopy a.o out2 --compress-sections '*c0=zlib' --compress-sections .debug_str=zstd
+# RUN: llvm-readelf -Sr -x nonalloc0 -x .debug_str out2 2>&1 | FileCheck %s --check-prefix=CHECK2
+# RUN: llvm-readelf -z -x nonalloc0 -x .debug_str out2 | FileCheck %s --check-prefix=CHECK2DE
+
+# CHECK2: Name Type Address Off Size ES Flg Lk Inf Al
+# CHECK2: .text PROGBITS [[#%x,TEXT:]] [[#%x,]] [[#%x,]] 00 AX 0 0 4
+# CHECK2: foo0 PROGBITS [[#%x,FOO0:]] [[#%x,]] [[#%x,]] 00 A 0 0 8
+# CHECK2-NEXT: .relafoo0 RELA [[#%x,]] [[#%x,]] [[#%x,]] 18 I 11 3 8
+# CHECK2-NEXT: foo1 PROGBITS [[#%x,FOO1:]] [[#%x,]] [[#%x,]] 00 A 0 0 8
+# CHECK2-NEXT: .relafoo1 RELA [[#%x,]] [[#%x,]] [[#%x,]] 18 I 11 5 8
+# CHECK2: nonalloc0 PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 00 C 0 0 8
+# CHECK2-NEXT: .relanonalloc0 RELA [[#%x,]] [[#%x,]] [[#%x,]] 18 IC 11 7 8
+# CHECK2-NEXT: nonalloc1 PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 00 0 0 8
+# CHECK2-NEXT: .debug_str PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 01 MSC 0 0 8
+
+## llvm-readelf -r doesn't support SHF_COMPRESSED SHT_RELA.
+# CHECK2: warning: {{.*}}: unable to read relocations from SHT_RELA section with index 8: section [index 8] has an invalid sh_size ([[#]]) which is not a multiple of its sh_entsize (24)
+
+# CHECK2: Hex dump of section 'nonalloc0':
+## zlib with ch_size=0x10
+# CHECK2-NEXT: 01000000 00000000 10000000 00000000
+# CHECK2-NEXT: 08000000 00000000 {{.*}}
+# CHECK2: Hex dump of section '.debug_str':
+## zstd with ch_size=0x38
+# CHECK2-NEXT: 02000000 00000000 38000000 00000000
+# CHECK2-NEXT: 01000000 00000000 {{.*}}
+
+# CHECK2DE: Hex dump of section 'nonalloc0':
+# CHECK2DE-NEXT: 0x00000000 00000000 00000000 00000000 00000000 ................
+# CHECK2DE-EMPTY:
+# CHECK2DE-NEXT: Hex dump of section '.debug_str':
+# CHECK2DE-NEXT: 0x00000000 41414141 41414141 41414141 41414141 AAAAAAAAAAAAAAAA
+
+## --decompress-debug-sections takes precedence, even if it is before --compress-sections.
+# RUN: llvm-objcopy a.o out3 --decompress-debug-sections --compress-sections .debug_str=zstd
+# RUN: llvm-readelf -S out3 | FileCheck %s --check-prefix=CHECK3
+
+# CHECK3: .debug_str PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 01 MS 0 0 1
+
+# RUN: llvm-objcopy a.o out4 --compress-sections '*0=zlib'
+# RUN: llvm-readelf -S out4 | FileCheck %s --check-prefix=CHECK4
+
+# CHECK4: Name Type Address Off Size ES Flg Lk Inf Al
+# CHECK4: .text PROGBITS [[#%x,TEXT:]] [[#%x,]] [[#%x,]] 00 AX 0 0 4
+# CHECK4: foo0 PROGBITS [[#%x,FOO0:]] [[#%x,]] [[#%x,]] 00 AC 0 0 8
+# CHECK4-NEXT: .relafoo0 RELA [[#%x,]] [[#%x,]] [[#%x,]] 18 IC 11 3 8
+# CHECK4-NEXT: foo1 PROGBITS [[#%x,FOO1:]] [[#%x,]] [[#%x,]] 00 A 0 0 8
+# CHECK4-NEXT: .relafoo1 RELA [[#%x,]] [[#%x,]] [[#%x,]] 18 I 11 5 8
+# CHECK4: nonalloc0 PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 00 C 0 0 8
+# CHECK4-NEXT: .relanonalloc0 RELA [[#%x,]] [[#%x,]] [[#%x,]] 18 IC 11 7 8
+# CHECK4-NEXT: nonalloc1 PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 00 0 0 8
+# CHECK4-NEXT: .debug_str PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 01 MS 0 0 1
+
+## If a section is already compressed, compression request for another format is ignored.
+# RUN: llvm-objcopy a.o out5 --compress-sections 'nonalloc0=zlib'
+# RUN: llvm-readelf -x nonalloc0 out5 | FileCheck %s --check-prefix=CHECK5
+# RUN: llvm-objcopy out5 out5a --compress-sections 'nonalloc0=zstd'
+# RUN: cmp out5 out5a
+
+# CHECK5: Hex dump of section 'nonalloc0':
+## zlib with ch_size=0x10
+# CHECK5-NEXT: 01000000 00000000 10000000 00000000
+# CHECK5-NEXT: 08000000 00000000 {{.*}}
+
+# RUN: not llvm-objcopy --compress-sections=foo a.o out 2>&1 | \
+# RUN: FileCheck %s --check-prefix=ERR1 --implicit-check-not=error:
+# ERR1: error: --compress-sections: parse error, not 'section-glob=[none|zlib|zstd]'
+
+# RUN: llvm-objcopy --compress-sections 'a[=zlib' a.o out 2>&1 | \
+# RUN: FileCheck %s --check-prefix=ERR2 --implicit-check-not=error:
+# ERR2: warning: invalid glob pattern, unmatched '['
+
+# RUN: not llvm-objcopy a.o out --compress-sections='.debug*=zlib-gabi' --compress-sections='.debug*=' 2>&1 | \
+# RUN: FileCheck -check-prefix=ERR3 %s
+# ERR3: error: invalid or unsupported --compress-sections format: .debug*=zlib-gabi
+
+# RUN: not llvm-objcopy a.o out --compress-sections='!.debug*=zlib' 2>&1 | \
+# RUN: FileCheck -check-prefix=ERR4 %s
+# ERR4: error: --compress-sections: negative pattern is unsupported
+
+.globl _start
+_start:
+ ret
+
+.section foo0,"a"
+.balign 8
+.quad .text-.
+.quad .text-.
+.section foo1,"a"
+.balign 8
+.quad .text-.
+.quad .text-.
+.section nonalloc0,""
+.balign 8
+.quad .text+1
+.quad .text+2
+sym0:
+.section nonalloc1,""
+.balign 8
+.quad 42
+sym1:
+
+.section .debug_str,"MS",@progbits,1
+.Linfo_string0:
+ .asciz "AAAAAAAAAAAAAAAAAAAAAAAAAAA"
+.Linfo_string1:
+ .asciz "BBBBBBBBBBBBBBBBBBBBBBBBBBB"
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