From: Eric Anholt <eric@anholt.net>
Date: Tue, 16 Aug 2011 01:40:14 +0000 (-0700)
Subject: i965: Fix assertion failure on a loop consisting of while (true) { break }.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d376fa8e84b044ead47586d1b56a10742bcbdac7;p=mesa.git

i965: Fix assertion failure on a loop consisting of while (true) { break }.

On enabling the precompile step in the VS, we tripped over this
assertion failure in glsl-link-bug-30552.
---

diff --git a/src/mesa/drivers/dri/i965/brw_eu_emit.c b/src/mesa/drivers/dri/i965/brw_eu_emit.c
index b08906426e4..f5cc09dd49b 100644
--- a/src/mesa/drivers/dri/i965/brw_eu_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_eu_emit.c
@@ -2311,7 +2311,7 @@ brw_find_loop_end(struct brw_compile *p, int start)
       if (insn->header.opcode == BRW_OPCODE_WHILE) {
 	 int jip = intel->gen == 6 ? insn->bits1.branch_gen6.jump_count
 				   : insn->bits3.break_cont.jip;
-	 if (ip + jip / br < start)
+	 if (ip + jip / br <= start)
 	    return ip;
       }
    }