r600g/sb: fix constant propagation in gvn pass

Fixes the bug that prevented propagation of literals in some cases.

Signed-off-by: Vadim Girlin <vadimgirlin@gmail.com>

diff --git a/src/gallium/drivers/r600/sb/sb_gvn.cpp b/src/gallium/drivers/r600/sb/sb_gvn.cpp
index 6798917..fe4f884 100644 (file)
--- a/src/gallium/drivers/r600/sb/sb_gvn.cpp
+++ b/src/gallium/drivers/r600/sb/sb_gvn.cpp
@@ -159,7 +159,8 @@ void gvn::process_alu_src_constants(node &n, value* &v) {
 
        rp_kcache_tracker kc(sh);
 
-       kc.try_reserve(v->gvn_source->select);
+       if (v->gvn_source->is_kcache())
+               kc.try_reserve(v->gvn_source->select);
 
        // don't propagate 3rd constant to the trans-only instruction
        if (!n.is_alu_packed()) {