Mesa (master): pan/mdg: Use helpers for branch/discard inversion
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Tue May 19 20:42:39 UTC 2020
Module: Mesa
Branch: master
Commit: db7b0eb9112479a82a775c879186602e15c733ab
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=db7b0eb9112479a82a775c879186602e15c733ab
Author: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Date: Thu Apr 30 14:17:06 2020 -0400
pan/mdg: Use helpers for branch/discard inversion
Doesn't come up on glmark but would covered by the old passes.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5102>
---
src/panfrost/midgard/midgard_compile.c | 20 ++++++++++++++++++--
1 file changed, 18 insertions(+), 2 deletions(-)
diff --git a/src/panfrost/midgard/midgard_compile.c b/src/panfrost/midgard/midgard_compile.c
index d2575e5daca..9cede6f96de 100644
--- a/src/panfrost/midgard/midgard_compile.c
+++ b/src/panfrost/midgard/midgard_compile.c
@@ -1350,6 +1350,19 @@ search_var(struct exec_list *vars, unsigned driver_loc)
return NULL;
}
+static unsigned
+mir_get_branch_cond(nir_src *src, bool *invert)
+{
+ /* Wrap it. No swizzle since it's a scalar */
+
+ nir_alu_src alu = {
+ .src = *src
+ };
+
+ *invert = pan_has_source_mod(&alu, nir_op_inot);
+ return nir_src_index(NULL, &alu.src);
+}
+
static void
emit_intrinsic(compiler_context *ctx, nir_intrinsic_instr *instr)
{
@@ -1363,7 +1376,8 @@ emit_intrinsic(compiler_context *ctx, nir_intrinsic_instr *instr)
discard.branch.target_type = TARGET_DISCARD;
if (conditional) {
- discard.src[0] = nir_src_index(ctx, &instr->src[0]);
+ discard.src[0] = mir_get_branch_cond(&instr->src[0],
+ &discard.branch.invert_conditional);
discard.src_types[0] = nir_type_uint32;
}
@@ -2230,10 +2244,12 @@ emit_if(struct compiler_context *ctx, nir_if *nif)
midgard_block *before_block = ctx->current_block;
/* Speculatively emit the branch, but we can't fill it in until later */
+ bool inv = false;
EMIT(branch, true, true);
midgard_instruction *then_branch = mir_last_in_block(ctx->current_block);
- then_branch->src[0] = nir_src_index(ctx, &nif->condition);
+ then_branch->src[0] = mir_get_branch_cond(&nif->condition, &inv);
then_branch->src_types[0] = nir_type_uint32;
+ then_branch->branch.invert_conditional = !inv;
/* Emit the two subblocks. */
midgard_block *then_block = emit_cf_list(ctx, &nif->then_list);
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