diff options
| author | Dave Airlie <[email protected]> | 2017-11-26 23:36:39 +0000 |
|---|---|---|
| committer | Dave Airlie <[email protected]> | 2017-11-29 11:52:53 +1000 |
| commit | 579ec9c311eb5176054b624f39c5c024605b58d6 (patch) | |
| tree | 612140eda207aaa617e773b2f031086202fb29c5 /src | |
| parent | 6b91610fc6082c449f67f1735f06db0e769c36b4 (diff) | |
r600/sb: handle jump after target to end of program. (v2)
This fixes hangs on cayman with
tests/spec/arb_tessellation_shader/execution/trivial-tess-gs_no-gs-inputs.shader_test
This has a single if/else in it, and when this peephole activated,
it would set the jump target to NULL if there was no instruction
after the final POP. This adds a NOP if we get a jump in this case,
and seems to fix the hangs, so we have a valid target for the ELSE
instruction to go to, instead of 0 (which causes infinite loops).
v2: update last_cf correctly. (I had some other patches hide this)
Cc: <[email protected]>
Signed-off-by: Dave Airlie <[email protected]>
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/drivers/r600/sb/sb_bc_finalize.cpp | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/gallium/drivers/r600/sb/sb_bc_finalize.cpp b/src/gallium/drivers/r600/sb/sb_bc_finalize.cpp index 82826a90921..7f1dd0a7a0e 100644 --- a/src/gallium/drivers/r600/sb/sb_bc_finalize.cpp +++ b/src/gallium/drivers/r600/sb/sb_bc_finalize.cpp @@ -933,6 +933,11 @@ void bc_finalizer::cf_peephole() { cf_node *c = static_cast<cf_node*>(*I); if (c->jump_after_target) { + if (c->jump_target->next == NULL) { + c->jump_target->insert_after(sh.create_cf(CF_OP_NOP)); + if (last_cf == c->jump_target) + last_cf = static_cast<cf_node*>(c->jump_target->next); + } c->jump_target = static_cast<cf_node*>(c->jump_target->next); c->jump_after_target = false; } |