i965: Extra asserts on flow control instructions to clarify for clang.

diff --git a/src/mesa/drivers/dri/i965/brw_wm_glsl.c b/src/mesa/drivers/dri/i965/brw_wm_glsl.c
index 43646528f5f0e705c25c291aad3b145c7ba72aca..eccbfd5fa3ae8d0325de344c9f6ba810e93ceeb9 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_wm_glsl.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_glsl.c
@@ -2040,6 +2040,7 @@ static void brw_wm_emit_glsl(struct brw_context *brw, struct brw_wm_compile *c)
                if_inst[if_depth++] = brw_IF(p, BRW_EXECUTE_8);
                break;
            case OPCODE_ELSE:
+               assert(if_depth > 0);
                if_inst[if_depth-1]  = brw_ELSE(p, if_inst[if_depth-1]);
                break;
            case OPCODE_ENDIF:
@@ -2095,7 +2096,8 @@ static void brw_wm_emit_glsl(struct brw_context *brw, struct brw_wm_compile *c)
 
                   if (intel->is_ironlake)
                      br = 2;
- 
+
+                 assert(loop_depth > 0);
                   loop_depth--;
                   inst0 = inst1 = brw_WHILE(p, loop_inst[loop_depth]);
                   /* patch all the BREAK/CONT instructions from last BGNLOOP */