From 22bb7ffd04ca9296bcafa929f448203880cbcb2b Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Wed, 10 Mar 2010 18:06:02 -0700
Subject: [PATCH] gallivm: constant building for scalar zero

---
 src/gallium/auxiliary/gallivm/lp_bld_const.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_const.c b/src/gallium/auxiliary/gallivm/lp_bld_const.c
index 53447757e8e..8a275fa72f3 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_const.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_const.c
@@ -221,8 +221,16 @@ lp_build_undef(struct lp_type type)
 LLVMValueRef
 lp_build_zero(struct lp_type type)
 {
-   LLVMTypeRef vec_type = lp_build_vec_type(type);
-   return LLVMConstNull(vec_type);
+   if (type.length == 1) {
+      if (type.floating)
+         return LLVMConstReal(LLVMFloatType(), 0.0);
+      else
+         return LLVMConstInt(LLVMIntType(type.width), 0, 0);
+   }
+   else {
+      LLVMTypeRef vec_type = lp_build_vec_type(type);
+      return LLVMConstNull(vec_type);
+   }
 }
                
 
-- 
2.30.2