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authorJason Ekstrand <[email protected]>2015-09-14 12:25:28 -0700
committerJason Ekstrand <[email protected]>2015-09-17 08:16:01 -0700
commitddffe30f404b7dffef2b90879023433ecc7df3e3 (patch)
tree13b2b1e77ecf7f2e16a7ebc0a4a27338ed4331f1 /src/glsl
parent8ecaef967d6f2775bf7114d857baf3aaa13643a7 (diff)
nir: Add comments to nir_index_instrs and nir_index_ssa_defs
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 <[email protected]>
Diffstat (limited to 'src/glsl')
-rw-r--r--src/glsl/nir/nir.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/src/glsl/nir/nir.c b/src/glsl/nir/nir.c
index 1ff8f217407..23071eff65b 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)
{