Matteo Bruni : vkd3d-shader: Consider previous last_read value when computing liveness.
Alexandre Julliard
julliard at winehq.org
Mon Mar 22 16:48:26 CDT 2021
Module: vkd3d
Branch: master
Commit: f73b3385c76fc68c2060698c92829bb1edb7b40b
URL: https://source.winehq.org/git/vkd3d.git/?a=commit;h=f73b3385c76fc68c2060698c92829bb1edb7b40b
Author: Matteo Bruni <mbruni at codeweavers.com>
Date: Sun Mar 21 21:40:07 2021 +0100
vkd3d-shader: Consider previous last_read value when computing liveness.
Otherwise we end up overwriting UINT_MAX last_read for output variables.
Signed-off-by: Matteo Bruni <mbruni at codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet at codeweavers.com>
Signed-off-by: Zebediah Figura <zfigura at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
libs/vkd3d-shader/hlsl_codegen.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libs/vkd3d-shader/hlsl_codegen.c b/libs/vkd3d-shader/hlsl_codegen.c
index 2382ffe..59514e4 100644
--- a/libs/vkd3d-shader/hlsl_codegen.c
+++ b/libs/vkd3d-shader/hlsl_codegen.c
@@ -342,7 +342,7 @@ static void compute_liveness_recurse(struct list *instrs, unsigned int loop_firs
struct hlsl_ir_load *load = hlsl_ir_load(instr);
var = load->src.var;
- var->last_read = loop_last ? max(instr->index, loop_last) : instr->index;
+ var->last_read = max(var->last_read, loop_last ? max(instr->index, loop_last) : instr->index);
if (load->src.offset.node)
load->src.offset.node->last_read = instr->index;
break;
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