diff options
| author | Ju-Zhe Zhong <juzhe.zhong@rivai.ai> | 2022-12-24 11:08:00 +0800 |
|---|---|---|
| committer | Kito Cheng <kito.cheng@sifive.com> | 2022-12-27 23:29:24 +0800 |
| commit | 681a5632e0afaa24cc2a3d50a30be08d27dbfd35 (patch) | |
| tree | fdd8a5fd752d14b0fdccc3dfa9e5082df17fc2de /gcc | |
| parent | 12b23c718cd29924a18e8cdd6790a9c04801c5f5 (diff) | |
| download | gcc-681a5632e0afaa24cc2a3d50a30be08d27dbfd35.zip gcc-681a5632e0afaa24cc2a3d50a30be08d27dbfd35.tar.gz gcc-681a5632e0afaa24cc2a3d50a30be08d27dbfd35.tar.bz2 | |
RISC-V: Fix ICE of visiting non-existing block in CFG.
This patch is to fix issue of visiting non-existing block of CFG.
Since blocks index of CFG in GCC are not always contiguous, we will potentially
visit a gap block which is no existing in the current CFG.
This patch can avoid visiting non existing block in CFG.
I noticed such issue in my internal regression of current testsuite
when I change the X86 server machine. This patch fix it:
17:27:15 job(build_and_test_rv32): Increased FAIL List:
17:27:15 job(build_and_test_rv32): FAIL: gcc.target/riscv/rvv/vsetvl/vlmax_back_prop-46.c
-O2 -flto -fno-use-linker-plugin -flto-partition=none (internal compiler error: Segmentation fault)
gcc/ChangeLog:
* config/riscv/riscv-vsetvl.cc
(pass_vsetvl::compute_global_backward_infos): Change to visit CFG.
(pass_vsetvl::prune_expressions): Ditto.
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/config/riscv/riscv-vsetvl.cc | 21 |
1 files changed, 10 insertions, 11 deletions
diff --git a/gcc/config/riscv/riscv-vsetvl.cc b/gcc/config/riscv/riscv-vsetvl.cc index a55b5a1..0d66765 100644 --- a/gcc/config/riscv/riscv-vsetvl.cc +++ b/gcc/config/riscv/riscv-vsetvl.cc @@ -1962,12 +1962,10 @@ pass_vsetvl::compute_global_backward_infos (void) if (dump_file) { fprintf (dump_file, "\n\nDirty blocks list: "); - for (size_t i = 0; i < m_vector_manager->vector_block_infos.length (); - i++) - { - if (m_vector_manager->vector_block_infos[i].reaching_out.dirty_p ()) - fprintf (dump_file, "%ld ", i); - } + for (const bb_info *bb : crtl->ssa->bbs ()) + if (m_vector_manager->vector_block_infos[bb->index ()] + .reaching_out.dirty_p ()) + fprintf (dump_file, "%d ", bb->index ()); fprintf (dump_file, "\n\n"); } } @@ -1976,15 +1974,16 @@ pass_vsetvl::compute_global_backward_infos (void) void pass_vsetvl::prune_expressions (void) { - for (size_t i = 0; i < m_vector_manager->vector_block_infos.length (); i++) + for (const bb_info *bb : crtl->ssa->bbs ()) { - if (m_vector_manager->vector_block_infos[i].local_dem.valid_or_dirty_p ()) + if (m_vector_manager->vector_block_infos[bb->index ()] + .local_dem.valid_or_dirty_p ()) m_vector_manager->create_expr ( - m_vector_manager->vector_block_infos[i].local_dem); - if (m_vector_manager->vector_block_infos[i] + m_vector_manager->vector_block_infos[bb->index ()].local_dem); + if (m_vector_manager->vector_block_infos[bb->index ()] .reaching_out.valid_or_dirty_p ()) m_vector_manager->create_expr ( - m_vector_manager->vector_block_infos[i].reaching_out); + m_vector_manager->vector_block_infos[bb->index ()].reaching_out); } if (dump_file) |