Mesa (master): i965: Don't set EmitNoMainReturn.

[Kenneth Graunke]

Module: Mesa
Branch: master
Commit: a4d6f4d954d8539c3effbbc3af7f74e9dae32e2c
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=a4d6f4d954d8539c3effbbc3af7f74e9dae32e2c

Author: Kenneth Graunke <kenneth at whitecape.org>
Date:   Thu Jan  5 10:46:39 2017 -0800

i965: Don't set EmitNoMainReturn.

A while ago, we stopped using Luca's GLSL IR lower_jumps pass in favor
of nir_lower_returns().  Marek's commit d3cb79e043338b0e55a3fba8df652f3
put it in do_common_optimization, which resulted in us calling it again.

Dropping the EmitNoMainReturn setting makes us skip that pass again.

Apparently that pass doesn't work properly, because this fixes Piglit's
tests/spec/glsl-1.10/execution/vs-nested-return-sibling-loop.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99287
Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
Reviewed-by: Timothy Arceri <timothy.arceri at collabora.com>

---

 src/mesa/drivers/dri/i965/brw_compiler.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/mesa/drivers/dri/i965/brw_compiler.c b/src/mesa/drivers/dri/i965/brw_compiler.c
index fa8a772..f3dafec 100644
--- a/src/mesa/drivers/dri/i965/brw_compiler.c
+++ b/src/mesa/drivers/dri/i965/brw_compiler.c
@@ -126,7 +126,6 @@ brw_compiler_create(void *mem_ctx, const struct gen_device_info *devinfo)
       compiler->glsl_compiler_options[i].MaxIfDepth =
          devinfo->gen < 6 ? 16 : UINT_MAX;
 
-      compiler->glsl_compiler_options[i].EmitNoMainReturn = true;
       compiler->glsl_compiler_options[i].EmitNoIndirectInput = true;
       compiler->glsl_compiler_options[i].EmitNoIndirectUniform = false;