diff options
| author | Timothy Arceri <[email protected]> | 2017-08-10 20:42:29 +1000 |
|---|---|---|
| committer | Timothy Arceri <[email protected]> | 2017-08-11 15:44:08 +1000 |
| commit | 77f5221233ea427b622af46831feed438e0dd59e (patch) | |
| tree | 01b42678b12c9fb954a4fb79f176d7f594498d46 /src/compiler/glsl/opt_constant_folding.cpp | |
| parent | d4f79e995f180239c5d14e8493de9aac5a9e6833 (diff) | |
glsl: pass mem_ctx to constant_expression_value(...) and friends
The main motivation for this is that threaded compilation can fall
over if we were to allocate IR inside constant_expression_value()
when calling it on a builtin. This is because builtins are shared
across the whole OpenGL context.
f81ede469910d worked around the problem by cloning the entire
builtin before constant_expression_value() could be called on
it. However cloning the whole function each time we referenced
it lead to a significant reduction in the GLSL IR compiler
performance. This change along with the following patch
helps fix that performance regression.
Other advantages are that we reduce the number of calls to
ralloc_parent(), and for loop unrolling we free constants after
they are used rather than leaving them hanging around.
Reviewed-by: Kenneth Graunke <[email protected]>
Diffstat (limited to 'src/compiler/glsl/opt_constant_folding.cpp')
| -rw-r--r-- | src/compiler/glsl/opt_constant_folding.cpp | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/src/compiler/glsl/opt_constant_folding.cpp b/src/compiler/glsl/opt_constant_folding.cpp index e72aec78f68..3b9394d1358 100644 --- a/src/compiler/glsl/opt_constant_folding.cpp +++ b/src/compiler/glsl/opt_constant_folding.cpp @@ -100,7 +100,8 @@ ir_constant_fold(ir_rvalue **rvalue) if (var_ref) return false; - ir_constant *constant = (*rvalue)->constant_expression_value(); + ir_constant *constant = + (*rvalue)->constant_expression_value(ralloc_parent(*rvalue)); if (constant) { *rvalue = constant; return true; @@ -189,7 +190,7 @@ ir_constant_folding_visitor::visit_enter(ir_call *ir) } /* Next, see if the call can be replaced with an assignment of a constant */ - ir_constant *const_val = ir->constant_expression_value(); + ir_constant *const_val = ir->constant_expression_value(ralloc_parent(ir)); if (const_val != NULL) { ir_assignment *assignment = |