gallivm: fix bug in nested conditionals

This, plus the previous commit fix fd.o bug 29806.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
index ca8db9ce01..0e07f7f3f3 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
@@ -200,8 +200,10 @@ static void lp_exec_mask_cond_push(struct lp_exec_mask *mask,
    }
    mask->cond_stack[mask->cond_stack_size++] = mask->cond_mask;
    assert(LLVMTypeOf(val) == mask->int_vec_type);
-   mask->cond_mask = val;
-
+   mask->cond_mask = LLVMBuildAnd(mask->bld->builder,
+                                  mask->cond_mask,
+                                  val,
+                                  "");
    lp_exec_mask_update(mask);
 }