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| author | Andrew Stubbs <ams@codesourcery.com> | 2020-12-06 19:23:55 +0000 |
|---|---|---|
| committer | Kwok Cheung Yeung <kcy@codesourcery.com> | 2022-06-21 14:11:30 +0100 |
| commit | 27a14054a8a21b994bb91c624f3306dc24a3888b (patch) | |
| tree | 04d0d16dc7473f0732d1e75b60715cea4bf90d01 /gcc | |
| parent | 01bbed294a26942704c0710673b7570e01f84da7 (diff) | |
| download | gcc-27a14054a8a21b994bb91c624f3306dc24a3888b.zip gcc-27a14054a8a21b994bb91c624f3306dc24a3888b.tar.gz gcc-27a14054a8a21b994bb91c624f3306dc24a3888b.tar.bz2 | |
Fix offload dwarf info
Add a notional code range to the notional parent function of offload kernel
functions. This is enough to prevent GDB discarding them.
gcc/ChangeLog:
* dwarf2out.cc (gen_subprogram_die): Add high/low_pc attributes for
parents of offload kernels.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog.omp | 5 | ||||
| -rw-r--r-- | gcc/dwarf2out.cc | 14 |
2 files changed, 19 insertions, 0 deletions
diff --git a/gcc/ChangeLog.omp b/gcc/ChangeLog.omp index 444d008..4346ea0 100644 --- a/gcc/ChangeLog.omp +++ b/gcc/ChangeLog.omp @@ -1,3 +1,8 @@ +2020-12-06 Andrew Stubbs <ams@codesourcery.com> + + * dwarf2out.cc (gen_subprogram_die): Add high/low_pc attributes for + parents of offload kernels. + 2021-01-13 Julian Brown <julian@codesourcery.com> * doc/tm.texi.in (TARGET_VECTORIZE_PREFER_GATHER_SCATTER): Add diff --git a/gcc/dwarf2out.cc b/gcc/dwarf2out.cc index d7a3994..dfdc0426 100644 --- a/gcc/dwarf2out.cc +++ b/gcc/dwarf2out.cc @@ -23755,6 +23755,20 @@ gen_subprogram_die (tree decl, dw_die_ref context_die) /* We have already generated the labels. */ add_AT_low_high_pc (subr_die, fde->dw_fde_begin, fde->dw_fde_end, false); + + /* Offload kernel functions are nested within a parent function + that doesn't actually exist within the offload object. GDB + will ignore the function and everything nested within unless + we give it a notional code range (the values aren't + important, as long as they are valid). */ + if (flag_generate_offload + && lookup_attribute ("omp target entrypoint", + DECL_ATTRIBUTES (decl)) + && subr_die->die_parent + && subr_die->die_parent->die_tag == DW_TAG_subprogram + && !get_AT_low_pc (subr_die->die_parent)) + add_AT_low_high_pc (subr_die->die_parent, fde->dw_fde_begin, + fde->dw_fde_end, false); } else { |