Revert part of r241149, "Fix PR23872: Integrated assembler error message when using...

[oota-llvm.git] / test / MC / ELF / compression.s

diff --git a/test/MC/ELF/compression.s b/test/MC/ELF/compression.s
index 4e55905942551e6dd7d03e6033006df10e8f6d57..5560ba78c68fa39e31ab2c097c1add6154a1666b 100644 (file)
--- a/test/MC/ELF/compression.s
+++ b/test/MC/ELF/compression.s
@@ -1,30 +1,79 @@
-// RUN: llvm-mc -filetype=obj -compress-debug-sections -triple x86_64-pc-linux-gnu %s -o - | llvm-objdump -s - | FileCheck %s
-
-// XFAIL: *
+// RUN: llvm-mc -filetype=obj -compress-debug-sections -triple x86_64-pc-linux-gnu < %s -o %t
+// RUN: llvm-objdump -s %t | FileCheck %s
+// RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck --check-prefix=INFO %s
+// RUN: llvm-mc -filetype=obj -compress-debug-sections -triple i386-pc-linux-gnu < %s \
+// RUN:     | llvm-readobj -symbols - | FileCheck --check-prefix=386-SYMBOLS %s
 
 // REQUIRES: zlib
 
-// CHECK: Contents of section .debug_line:
-// FIXME: Figure out how to handle debug_line that currently uses multiple section fragments
+// CHECK: Contents of section .zdebug_line:
+// Check for the 'ZLIB' file magic at the start of the section only
+// CHECK-NEXT: ZLIB
 // CHECK-NOT: ZLIB
 
-// CHECK: Contents of section .zdebug_abbrev:
-// Check for the 'ZLIB' file magic at the start of the section
-// CHECK-NEXT: ZLIB
+// Don't compress small sections, such as this simple debug_abbrev example
+// CHECK: Contents of section .debug_abbrev:
+// CHECK-NOT: ZLIB
+// CHECK-NOT: Contents of
 
-// We shouldn't compress the debug_frame section, since it can be relaxed
-// CHECK: Contents of section .debug_frame
+// CHECK: Contents of section .debug_info:
+
+// FIXME: Handle compressing alignment fragments to support compressing debug_frame
+// CHECK: Contents of section .debug_frame:
 // CHECK-NOT: ZLIB
+// CHECK: Contents of
+
+// Decompress one valid dwarf section just to check that this roundtrips
+// INFO: 0x00000000: Compile Unit: length = 0x0000000c version = 0x0004 abbr_offset = 0x0000 addr_size = 0x08 (next unit at 0x00000010)
+
+// In x86 32 bit named symbols are used for temporary symbols in merge
+// sections, so make sure we handle symbols inside compressed sections
+// 386-SYMBOLS: Name: .Linfo_string0
+// 386-SYMBOLS-NOT: }
+// 386-SYMBOLS: Section: .zdebug_str
 
        .section        .debug_line,"",@progbits
 
        .section        .debug_abbrev,"",@progbits
+.Lsection_abbrev:
        .byte   1                       # Abbreviation Code
+       .byte   17                      # DW_TAG_compile_unit
+       .byte   0                       # DW_CHILDREN_no
+       .byte   27                      # DW_AT_comp_dir
+       .byte   14                      # DW_FORM_strp
+       .byte   0                       # EOM(1)
+       .byte   0                       # EOM(2)
+
+       .section        .debug_info,"",@progbits
+       .long   12                      # Length of Unit
+       .short  4                       # DWARF version number
+       .long   .Lsection_abbrev        # Offset Into Abbrev. Section
+       .byte   8                       # Address Size (in bytes)
+       .byte   1                       # Abbrev [1] DW_TAG_compile_unit
+       .long   .Linfo_string0          # DW_AT_comp_dir
+
        .text
 foo:
        .cfi_startproc
        .file 1 "Driver.ii"
+# pad out the line table to make sure it's big enough to warrant compression
        .loc 1 2 0
         nop
+       .loc 1 3 0
+        nop
+       .loc 1 4 0
+        nop
+       .loc 1 5 0
+        nop
+       .loc 1 6 0
+        nop
+       .loc 1 7 0
+        nop
+       .loc 1 8 0
+        nop
        .cfi_endproc
        .cfi_sections .debug_frame
+
+       .section        .debug_str,"MS",@progbits,1
+.Linfo_string0:
+        .asciz  "compress this                                    "