diff options
| author | Kenneth Graunke <kenneth@whitecape.org> | 2010-11-29 10:59:16 -0800 |
|---|---|---|
| committer | Kenneth Graunke <kenneth@whitecape.org> | 2010-12-01 11:52:43 -0800 |
| commit | 1802cb9bafc4125300870be51e8b22ddd795d61e (patch) | |
| tree | 6101cd37b29af05142630f15c13c93e60e33fb6e /src/glsl/lower_jumps.cpp | |
| parent | 940df10100d740ef27fa39026fd51c3199ed3d62 (diff) | |
glsl: Remove "discard" support from lower_jumps.
The new lower_discard and opt_discard_simplification passes should
handle all the necessary transformations, so lower_jumps doesn't need to
support it.
Also, lower_jumps incorrectly handled conditional discards - it would
unconditionally truncate all code after the discard. Rather than fixing
the bug, simply remove the code.
NOTE: This is a candidate for the 7.9 branch.
Diffstat (limited to 'src/glsl/lower_jumps.cpp')
| -rw-r--r-- | src/glsl/lower_jumps.cpp | 13 |
1 files changed, 2 insertions, 11 deletions
diff --git a/src/glsl/lower_jumps.cpp b/src/glsl/lower_jumps.cpp index e1e7a5b007..beacfaf8b0 100644 --- a/src/glsl/lower_jumps.cpp +++ b/src/glsl/lower_jumps.cpp @@ -36,7 +36,6 @@ enum jump_strength strength_continue, strength_break, strength_return, - strength_discard }; struct block_record @@ -202,8 +201,6 @@ struct ir_lower_jumps_visitor : public ir_control_flow_visitor { virtual void visit(class ir_discard * ir) { - truncate_after_instruction(ir); - this->block.min_strength = strength_discard; } enum jump_strength get_jump_strength(ir_instruction* ir) @@ -217,8 +214,6 @@ struct ir_lower_jumps_visitor : public ir_control_flow_visitor { return strength_continue; } else if(ir->ir_type == ir_type_return) return strength_return; - else if(ir->ir_type == ir_type_discard) - return strength_discard; else return strength_none; } @@ -253,9 +248,6 @@ struct ir_lower_jumps_visitor : public ir_control_flow_visitor { else lower = lower_sub_return; break; - case strength_discard: - lower = false; /* probably nothing needs this lowered */ - break; } return lower; } @@ -313,9 +305,8 @@ retry: /* we get here if we put code after the if inside a branch */ /* FINISHME: unify returns with identical expressions */ else if(jump_strengths[0] == strength_return && this->function.signature->return_type->is_void()) ir->insert_after(new(ir) ir_return(NULL)); - /* FINISHME: unify discards */ - else - unify = false; + else + unify = false; if(unify) { jumps[0]->remove(); |