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llvm-project/llvm/test/MC/ELF/compression.s

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DebugInfo: Support for compressed debug info sections 1) When creating a .debug_* section and instead create a .zdebug_ section. 2) When creating a fragment in a .zdebug_* section, make it a compressed fragment. 3) When computing the size of a compressed section, compress the data and use the size of the compressed data. 4) Emit the compressed bytes. Also, check that only if a section has a compressed fragment, then that is the only fragment in the section. Assert-fail if the fragment's data is modified after it is compressed. Initial review on llvm-commits by Eric Christopher and Rafael Espindola. llvm-svn: 204958
2014-03-28 04:45:58 +08:00
// RUN: llvm-mc -filetype=obj -compress-debug-sections -triple x86_64-pc-linux-gnu %s -o - | llvm-objdump -s - | FileCheck %s
Revert debug info compression support. To support compression for debug_line and debug_frame a different approach is required. To simplify review, revert the old implementation and XFAIL the test case. New implementation to follow shortly. Reverts r205059 and r204958. llvm-svn: 205989
2014-04-11 05:53:47 +08:00
// XFAIL: *
Only test compression when linked with zlib. I'll implement error handling and a negative test in both llvm-mc and Clang soon. llvm-svn: 205016
2014-03-29 01:04:53 +08:00
// REQUIRES: zlib
Debug Compression: Avoid compression debug_frame for now Turns out debug_frame does use multiple fragments, so it doesn't compress correctly with the current approach. Disable compressing it for now while I figure out what's the best solution for it. llvm-svn: 205059
2014-03-29 05:48:31 +08:00
// CHECK: Contents of section .debug_line:
// FIXME: Figure out how to handle debug_line that currently uses multiple section fragments
// CHECK-NOT: ZLIB
// CHECK: Contents of section .zdebug_abbrev:
DebugInfo: Support for compressed debug info sections 1) When creating a .debug_* section and instead create a .zdebug_ section. 2) When creating a fragment in a .zdebug_* section, make it a compressed fragment. 3) When computing the size of a compressed section, compress the data and use the size of the compressed data. 4) Emit the compressed bytes. Also, check that only if a section has a compressed fragment, then that is the only fragment in the section. Assert-fail if the fragment's data is modified after it is compressed. Initial review on llvm-commits by Eric Christopher and Rafael Espindola. llvm-svn: 204958
2014-03-28 04:45:58 +08:00
// Check for the 'ZLIB' file magic at the start of the section
// CHECK-NEXT: ZLIB
Debug Compression: Avoid compression debug_frame for now Turns out debug_frame does use multiple fragments, so it doesn't compress correctly with the current approach. Disable compressing it for now while I figure out what's the best solution for it. llvm-svn: 205059
2014-03-29 05:48:31 +08:00
DebugInfo: Support for compressed debug info sections 1) When creating a .debug_* section and instead create a .zdebug_ section. 2) When creating a fragment in a .zdebug_* section, make it a compressed fragment. 3) When computing the size of a compressed section, compress the data and use the size of the compressed data. 4) Emit the compressed bytes. Also, check that only if a section has a compressed fragment, then that is the only fragment in the section. Assert-fail if the fragment's data is modified after it is compressed. Initial review on llvm-commits by Eric Christopher and Rafael Espindola. llvm-svn: 204958
2014-03-28 04:45:58 +08:00
// We shouldn't compress the debug_frame section, since it can be relaxed
// CHECK: Contents of section .debug_frame
// CHECK-NOT: ZLIB
.section .debug_line,"",@progbits
Debug Compression: Avoid compression debug_frame for now Turns out debug_frame does use multiple fragments, so it doesn't compress correctly with the current approach. Disable compressing it for now while I figure out what's the best solution for it. llvm-svn: 205059
2014-03-29 05:48:31 +08:00
.section .debug_abbrev,"",@progbits
.byte 1 # Abbreviation Code
DebugInfo: Support for compressed debug info sections 1) When creating a .debug_* section and instead create a .zdebug_ section. 2) When creating a fragment in a .zdebug_* section, make it a compressed fragment. 3) When computing the size of a compressed section, compress the data and use the size of the compressed data. 4) Emit the compressed bytes. Also, check that only if a section has a compressed fragment, then that is the only fragment in the section. Assert-fail if the fragment's data is modified after it is compressed. Initial review on llvm-commits by Eric Christopher and Rafael Espindola. llvm-svn: 204958
2014-03-28 04:45:58 +08:00
.text
foo:
.cfi_startproc
.file 1 "Driver.ii"
.loc 1 2 0
nop
.cfi_endproc
.cfi_sections .debug_frame