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-rw-r--r--src/gallium/drivers/r600/sb/sb_bc_parser.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/gallium/drivers/r600/sb/sb_bc_parser.cpp b/src/gallium/drivers/r600/sb/sb_bc_parser.cpp
index a7e712816b1..67e6c3a582d 100644
--- a/src/gallium/drivers/r600/sb/sb_bc_parser.cpp
+++ b/src/gallium/drivers/r600/sb/sb_bc_parser.cpp
@@ -385,6 +385,11 @@ int bc_parser::prepare_alu_group(cf_node* cf, alu_group_node *g) {
} else if (src.sel == ALU_SRC_PS || src.sel == ALU_SRC_PV) {
unsigned pgroup = !cgroup, prev_slot = src.sel == ALU_SRC_PS ?
SLOT_TRANS : src.chan;
+
+ // XXX shouldn't happen but llvm backend uses PS on cayman
+ if (prev_slot == SLOT_TRANS && ctx.is_cayman())
+ prev_slot = SLOT_X;
+
alu_node *prev_alu = slots[pgroup][prev_slot];
assert(prev_alu);