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-rw-r--r--src/mesa/drivers/dri/i965/brw_shader.cpp4
1 files changed, 4 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_shader.cpp b/src/mesa/drivers/dri/i965/brw_shader.cpp
index 21977a23130..736deb443dd 100644
--- a/src/mesa/drivers/dri/i965/brw_shader.cpp
+++ b/src/mesa/drivers/dri/i965/brw_shader.cpp
@@ -948,6 +948,8 @@ adjust_later_block_ips(bblock_t *start_block, int ip_adjustment)
void
backend_instruction::insert_after(bblock_t *block, backend_instruction *inst)
{
+ assert(this != inst);
+
if (!this->is_head_sentinel())
assert(inst_is_in_block(block, this) || !"Instruction not in block");
@@ -961,6 +963,8 @@ backend_instruction::insert_after(bblock_t *block, backend_instruction *inst)
void
backend_instruction::insert_before(bblock_t *block, backend_instruction *inst)
{
+ assert(this != inst);
+
if (!this->is_tail_sentinel())
assert(inst_is_in_block(block, this) || !"Instruction not in block");