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| author | H.J. Lu <hjl.tools@gmail.com> | 2021-01-26 08:18:39 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2021-01-26 08:18:52 -0800 |
| commit | 1f583bc2fcb1b5c4125faf8b8e815255b2b21b62 (patch) | |
| tree | 3edf29303405b2e9a25fc8766a08a2b68733705f /gas | |
| parent | 4ef367bffd73d50002339deba40983530ccb9d15 (diff) | |
| download | gdb-1f583bc2fcb1b5c4125faf8b8e815255b2b21b62.zip gdb-1f583bc2fcb1b5c4125faf8b8e815255b2b21b62.tar.gz gdb-1f583bc2fcb1b5c4125faf8b8e815255b2b21b62.tar.bz2 | |
nios2: Don't disable relaxation with --gdwarf-N
GCC 11 passes --gdwarf-5 to assembler to enable DWARF5 debug info. Don't
disable relaxation when --gdwarf-N is specified. The assembler generated
debug information will treat the sequence of the relaxed instructions as
a single instruction.
PR gas/27243
* config/tc-nios2.c (md_begin): Don't disable relaxation with
--gdwarf-N.
* testsuite/gas/nios2/relax.d: New file.
* testsuite/gas/nios2/relax.s: Likewise.
Diffstat (limited to 'gas')
| -rw-r--r-- | gas/ChangeLog | 8 | ||||
| -rw-r--r-- | gas/config/tc-nios2.c | 4 | ||||
| -rw-r--r-- | gas/testsuite/gas/nios2/relax.d | 25 | ||||
| -rw-r--r-- | gas/testsuite/gas/nios2/relax.s | 5 |
4 files changed, 38 insertions, 4 deletions
diff --git a/gas/ChangeLog b/gas/ChangeLog index e76a5bf..b3eb7db 100644 --- a/gas/ChangeLog +++ b/gas/ChangeLog @@ -1,3 +1,11 @@ +2021-01-26 H.J. Lu <hongjiu.lu@intel.com> + + PR gas/27243 + * config/tc-nios2.c (md_begin): Don't disable relaxation with + --gdwarf-N. + * testsuite/gas/nios2/relax.d: New file. + * testsuite/gas/nios2/relax.s: Likewise. + 2021-01-26 Alan Modra <amodra@gmail.com> * testsuite/gas/all/local-label-overflow.d: Use xfail rather than diff --git a/gas/config/tc-nios2.c b/gas/config/tc-nios2.c index eea6687..be4536c 100644 --- a/gas/config/tc-nios2.c +++ b/gas/config/tc-nios2.c @@ -3643,10 +3643,6 @@ md_begin (void) nios2_as_options.noat = FALSE; nios2_as_options.nobreak = FALSE; - /* Debug information is incompatible with relaxation. */ - if (debug_type != DEBUG_UNSPECIFIED) - nios2_as_options.relax = relax_none; - /* Initialize the alignment data. */ nios2_current_align_seg = now_seg; nios2_last_label = NULL; diff --git a/gas/testsuite/gas/nios2/relax.d b/gas/testsuite/gas/nios2/relax.d new file mode 100644 index 0000000..ca01a4f --- /dev/null +++ b/gas/testsuite/gas/nios2/relax.d @@ -0,0 +1,25 @@ +#source: relax.s +#as: --gdwarf-5 +#objdump: -w -WL -dr --prefix-addresses --show-raw-insn +#name: NIOS2 relax with --gdwarf-5 + +# Test relaxation with assembler generated debug info. +.*: file format elf32-littlenios2 + +Contents of the .debug_line section: + +CU: ./relax.s: +File +name +Line +number +Starting +address +View +Stmt +relax.s +2 +0 +x +relax.s +5 +0x10018 +x +relax.s +- +0x1001c + +Disassembly of section .text: +0x00000000 21400526 beq r4,r5,0x00000018 +0x00000004 0002e03a nextpc at +0x00000008 085fffc4 addi at,at,32767 +0x0000000c 085fffc4 addi at,at,32767 +0x00000010 08400484 addi at,at,18 +0x00000014 0800683a jmp at + ... +0x00010018 f800283a ret diff --git a/gas/testsuite/gas/nios2/relax.s b/gas/testsuite/gas/nios2/relax.s new file mode 100644 index 0000000..ef417fd --- /dev/null +++ b/gas/testsuite/gas/nios2/relax.s @@ -0,0 +1,5 @@ + .text + bne r4, r5, 1f + .zero 0x10000 +1: + ret |