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[ELF,test] Improve --compress-debug-sections/--compress-sections tests
Make sections larger so that compressed content will be smaller than uncompressed content. Add a few dedicated tests where compressed content is larger.
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Fangrui Song
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bd5c6367bd
commit
e53c53559b
@ -3,22 +3,25 @@
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# RUN: llvm-mc -filetype=obj -triple=x86_64 --compress-debug-sections=zstd %s -o %t.o
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# RUN: ld.lld %t.o -o %t.so -shared
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# RUN: llvm-readelf -S -x .debug_str %t.so | FileCheck %s
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# RUN: llvm-readelf -S -p .debug_str %t.so | FileCheck %s
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# CHECK: .debug_str PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] 01 MS 0 0 1
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# CHECK: Hex dump of section '.debug_str':
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# CHECK-NEXT: 0x00000000 73686f72 7420756e 7369676e 65642069 short unsigned i
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# CHECK-NEXT: 0x00000010 6e740075 6e736967 6e656420 63686172 nt.unsigned char
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# CHECK-NEXT: 0x00000020 00636861 72006c6f 6e672075 6e736967 .char.long unsig
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# CHECK-NEXT: 0x00000030 6e656420 696e7400 756e7369 676e6564 ned int.unsigned
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# CHECK-NEXT: 0x00000040 20696e74 00 int.
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# CHECK: String dump of section '.debug_str':
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# CHECK-NEXT: [ 0] {{A+}}
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# CHECK-NEXT: [ 81] short unsigned int
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# CHECK-NEXT: [ 94] unsigned char
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# CHECK-NEXT: [ a2] char
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# CHECK-NEXT: [ a7] long unsigned int
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# CHECK-NEXT: [ b9] unsigned int
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# RUN: ld.lld %t.o -o %t.so -shared --compress-debug-sections=zstd
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# RUN: llvm-readelf -S %t.so | FileCheck %s --check-prefix=OUTPUT-SEC
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# RUN: llvm-objcopy --decompress-debug-sections %t.so
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# RUN: llvm-readelf -S -x .debug_str %t.so | FileCheck %s
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# RUN: llvm-readelf -S -p .debug_str %t.so | FileCheck %s
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# OUTPUT-SEC: .debug_str PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] 01 MSC 0 0 1
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# OUTPUT-SEC: .debug_str PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] 01 MSC 0 0 1
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# OUTPUT-SEC-NEXT: .debug_frame PROGBITS [[#%x,]] [[#%x,]] 000000 00 0 0 1
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# OUTPUT-SEC-NEXT: .debug_loc PROGBITS [[#%x,]] [[#%x,]] [[#%x,]] 00 C 0 0 1
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.section .debug_str,"MS",@progbits,1
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.LASF2:
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@ -31,3 +34,11 @@
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.string "char"
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.LASF1:
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.string "unsigned char"
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.Lunused:
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.fill 128, 1, 0x41
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.byte 0
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## Test sections where compressed content would be larger.
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.section .debug_frame,""
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.section .debug_loc,""
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.space 16
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@ -14,7 +14,7 @@
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# CHECK: warning: {{.*}}: unable to get the string table for the SHT_SYMTAB section: SHT_STRTAB string table section
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# CHECK: Hex dump of section '.strtab':
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# CHECK-NEXT: 01000000 00000000 1a000000 00000000
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# CHECK-NEXT: 01000000 00000000 5c000000 00000000
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# CHECK-NEXT: 01000000 00000000 {{.*}}
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# RUN: not ld.lld -shared a.o --compress-sections .dynstr=zlib 2>&1 | FileCheck %s --check-prefix=ERR-ALLOC
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@ -25,6 +25,8 @@ _start:
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l0:
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g0:
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g1:
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.globl ggggggggggggggggggggggggggggggg0
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.globl ggggggggggggggggggggggggggggggg1
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.section nonalloc0,""
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.quad .text+1
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@ -11,10 +11,11 @@
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# CHECK1-NEXT: .text PROGBITS [[#%x,TEXT:]] [[#%x,]] [[#%x,]] 00 AX 0 0 4
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# CHECK1: nonalloc0 PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 00 0 0 8
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# CHECK1-NEXT: nonalloc1 PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 00 0 0 8
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# CHECK1-NEXT: smallc0 PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 00 0 0 8
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# CHECK1-NEXT: .debug_str PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 01 MS 0 0 1
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# CHECK1: 0000000000000010 0 NOTYPE LOCAL DEFAULT [[#]] (nonalloc0) sym0
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# CHECK1: 0000000000000008 0 NOTYPE LOCAL DEFAULT [[#]] (nonalloc1) sym1
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# CHECK1: 0000000000000090 0 NOTYPE LOCAL DEFAULT [[#]] (nonalloc0) sym0
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# CHECK1: 0000000000000088 0 NOTYPE LOCAL DEFAULT [[#]] (nonalloc1) sym1
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# RUN: ld.lld -pie a.o --compress-sections '*c0=zlib' --compress-sections .debug_str=zstd:3 -o out2
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# RUN: llvm-readelf -SrsX -x nonalloc0 -x .debug_str out2 | FileCheck %s --check-prefix=CHECK2
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@ -25,14 +26,15 @@
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# CHECK2-NEXT: .text PROGBITS [[#%x,TEXT:]] [[#%x,]] [[#%x,]] 00 AX 0 0 4
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# CHECK2: nonalloc0 PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 00 C 0 0 1
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# CHECK2-NEXT: nonalloc1 PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 00 0 0 8
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# CHECK2-NEXT: smallc0 PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 00 C 0 0 1
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# CHECK2-NEXT: .debug_str PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 01 MSC 0 0 1
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# CHECK2: 0000000000000010 0 NOTYPE LOCAL DEFAULT [[#]] (nonalloc0) sym0
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# CHECK2: 0000000000000008 0 NOTYPE LOCAL DEFAULT [[#]] (nonalloc1) sym1
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# CHECK2: 0000000000000090 0 NOTYPE LOCAL DEFAULT [[#]] (nonalloc0) sym0
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# CHECK2: 0000000000000088 0 NOTYPE LOCAL DEFAULT [[#]] (nonalloc1) sym1
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# CHECK2: Hex dump of section 'nonalloc0':
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## zlib with ch_size=0x10
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# CHECK2-NEXT: 01000000 00000000 10000000 00000000
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## zlib with ch_size=0x90
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# CHECK2-NEXT: 01000000 00000000 90000000 00000000
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# CHECK2-NEXT: 01000000 00000000 {{.*}}
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# CHECK2: Hex dump of section '.debug_str':
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## zstd with ch_size=0x38
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@ -80,20 +82,28 @@ _start:
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.balign 8
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.quad .text-.
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.quad .text-.
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.space 128
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.section foo1,"a"
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.balign 8
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.quad .text-.
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.quad .text-.
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.space 128
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.section nonalloc0,""
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.balign 8
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.quad .text+1
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.quad .text+2
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.space 128
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sym0:
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.section nonalloc1,""
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.balign 8
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.quad 42
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.space 128
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sym1:
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.section smallc0,""
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.balign 8
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.space 12
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.section .debug_str,"MS",@progbits,1
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.Linfo_string0:
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.asciz "AAAAAAAAAAAAAAAAAAAAAAAAAAA"
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@ -18,8 +18,8 @@
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# RUN: llvm-readelf --sections %t.6 | FileCheck -check-prefixes=HEADER,LEVEL6 %s
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# HEADER: [Nr] Name Type Address Off Size
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# LEVEL1: [ 1] .debug_info PROGBITS 00000000 000094 00001{{[bc]}}
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# LEVEL6: [ 1] .debug_info PROGBITS 00000000 000094 00001a
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# LEVEL1: [ 1] .debug_info PROGBITS 00000000 000094 00001{{[def]}}
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# LEVEL6: [ 1] .debug_info PROGBITS 00000000 000094 00001{{[abc]}}
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## A little arbitrary debug section which has a different size after
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## applying compression of level 1 and 6.
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@ -33,4 +33,4 @@ FileHeader:
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Sections:
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- Name: .debug_info
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Type: SHT_PROGBITS
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Content: '010101010101010201010201'
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Content: '010101010101010201010201010101010101010201010201010101010101010201010201'
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@ -34,3 +34,5 @@
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.section .debug_str,"MS",@progbits,1
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.asciz "AAA"
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.asciz "BBB"
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.fill 64,1,0x41
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.byte 0
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@ -10,10 +10,11 @@
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# CHECK-NEXT: str PROGBITS 0000000000000000 [[#%x,]] [[#%x,]] 01 MSC 0 0 1
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# CHECK: 0000000000000000 0 NOTYPE GLOBAL DEFAULT [[#]] (nonalloc) nonalloc_start
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# CHECK: 0000000000000023 0 NOTYPE GLOBAL DEFAULT [[#]] (nonalloc) nonalloc_end
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# CHECK: 0000000000000063 0 NOTYPE GLOBAL DEFAULT [[#]] (nonalloc) nonalloc_end
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# CHECK: String dump of section 'str':
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# CHECK-NEXT: [ 0] AAA
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# CHECK-NEXT: [ 4] BBB
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# CHECK-NEXT: [ 4] {{a+}}
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# CHECK-NEXT: [ 45] BBB
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## TODO The uncompressed size of 'nonalloc' is dependent on linker script
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## commands, which is not handled. We should report an error.
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@ -28,6 +29,7 @@ _start:
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.balign 8
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.quad .text
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.quad .text
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.space 64
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.section nonalloc1,""
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.balign 8
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.quad 42
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@ -35,6 +37,8 @@ _start:
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.section str,"MS",@progbits,1
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.asciz "AAA"
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.asciz "BBB"
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.fill 64,1,0x61
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.byte 0
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#--- a.lds
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SECTIONS {
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