Mesa (nv50-compiler): nv50: fix thinko in store to output reg possible check

[Christoph Bumiller]

Module: Mesa
Branch: nv50-compiler
Commit: 6c5c55723d32f8933ffb5fc6b5beb209eca84ca8
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=6c5c55723d32f8933ffb5fc6b5beb209eca84ca8

Author: Christoph Bumiller <e0425955 at student.tuwien.ac.at>
Date:   Mon Aug 16 17:18:30 2010 +0200

nv50: fix thinko in store to output reg possible check

---

 src/gallium/drivers/nv50/nv50_pc_optimize.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/src/gallium/drivers/nv50/nv50_pc_optimize.c b/src/gallium/drivers/nv50/nv50_pc_optimize.c
index 4cf3872..5d57546 100644
--- a/src/gallium/drivers/nv50/nv50_pc_optimize.c
+++ b/src/gallium/drivers/nv50/nv50_pc_optimize.c
@@ -315,7 +315,7 @@ nv_pass_fold_stores(struct nv_pass *ctx, struct nv_basic_block *b)
       for (j = 0; j < 4 && nvi->src[j]; ++j)
          if (nvi->src[j]->value->reg.file == NV_FILE_IMM)
             break;
-      if (j < 4)
+      if (j < 4 && nvi->src[j])
          continue;
 
       nvi->def[0] = sti->def[0];