The provided indices have the very nice property that if A dominates B then
A->index <= B->index. We should document that somewhere.
Reviewed-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/glsl/nir/nir.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/src/glsl/nir/nir.c b/src/glsl/nir/nir.c
index 1ff8f21..23071ef 100644
--- a/src/glsl/nir/nir.c
+++ b/src/glsl/nir/nir.c
@@ -1427,6 +1427,10 @@ index_ssa_block(nir_block *block, void *state)
return true;
}
+/**
+ * The indices are applied top-to-bottom which has the very nice property
+ * that, if A dominates B, then A->index <= B->index.
+ */
void
nir_index_ssa_defs(nir_function_impl *impl)
{
@@ -1445,6 +1449,10 @@ index_instrs_block(nir_block *block, void *state)
return true;
}
+/**
+ * The indices are applied top-to-bottom which has the very nice property
+ * that, if A dominates B, then A->index <= B->index.
+ */
unsigned
nir_index_instrs(nir_function_impl *impl)
{
--
2.5.0.400.gff86faf
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