diff options
| author | Jordan Justen <[email protected]> | 2015-10-10 11:30:33 -0700 |
|---|---|---|
| committer | Jordan Justen <[email protected]> | 2015-12-09 23:50:38 -0800 |
| commit | fc21a7c26ea7b49031e4f33dcac5e2a297d2a6f3 (patch) | |
| tree | 8621a945cf4b417e337bf0bc093dfb994c1b8055 /src/glsl | |
| parent | f821a3ec4f8dda55722f326f26855c2b24ca186c (diff) | |
glsl: Disable several optimizations on shared variables
Shared variables can be accessed by other threads within the same
local workgroup. This prevents us from performing certain
optimizations with shared variables.
Signed-off-by: Jordan Justen <[email protected]>
Reviewed-by: Iago Toral Quiroga <[email protected]>
Reviewed-by: Kristian Høgsberg <[email protected]>
Diffstat (limited to 'src/glsl')
| -rw-r--r-- | src/glsl/opt_constant_propagation.cpp | 3 | ||||
| -rw-r--r-- | src/glsl/opt_constant_variable.cpp | 3 | ||||
| -rw-r--r-- | src/glsl/opt_copy_propagation.cpp | 3 |
3 files changed, 6 insertions, 3 deletions
diff --git a/src/glsl/opt_constant_propagation.cpp b/src/glsl/opt_constant_propagation.cpp index 184aaa1c297..fb24a4fad04 100644 --- a/src/glsl/opt_constant_propagation.cpp +++ b/src/glsl/opt_constant_propagation.cpp @@ -500,7 +500,8 @@ ir_constant_propagation_visitor::add_constant(ir_assignment *ir) * the variable value isn't modified between this assignment and the next * instruction where its value is read. */ - if (deref->var->data.mode == ir_var_shader_storage) + if (deref->var->data.mode == ir_var_shader_storage || + deref->var->data.mode == ir_var_shader_shared) return; entry = new(this->mem_ctx) acp_entry(deref->var, ir->write_mask, constant); diff --git a/src/glsl/opt_constant_variable.cpp b/src/glsl/opt_constant_variable.cpp index cdfbc340243..56f6a819e1e 100644 --- a/src/glsl/opt_constant_variable.cpp +++ b/src/glsl/opt_constant_variable.cpp @@ -120,7 +120,8 @@ ir_constant_variable_visitor::visit_enter(ir_assignment *ir) * and we can't be sure that this variable won't be written by another * thread. */ - if (var->data.mode == ir_var_shader_storage) + if (var->data.mode == ir_var_shader_storage || + var->data.mode == ir_var_shader_shared) return visit_continue; constval = ir->rhs->constant_expression_value(); diff --git a/src/glsl/opt_copy_propagation.cpp b/src/glsl/opt_copy_propagation.cpp index f20699563fd..5d4cb4fe613 100644 --- a/src/glsl/opt_copy_propagation.cpp +++ b/src/glsl/opt_copy_propagation.cpp @@ -330,7 +330,8 @@ ir_copy_propagation_visitor::add_copy(ir_assignment *ir) */ ir->condition = new(ralloc_parent(ir)) ir_constant(false); this->progress = true; - } else if (lhs_var->data.mode != ir_var_shader_storage) { + } else if (lhs_var->data.mode != ir_var_shader_storage && + lhs_var->data.mode != ir_var_shader_shared) { entry = new(this->acp) acp_entry(lhs_var, rhs_var); this->acp->push_tail(entry); } |