gallivm: constant building for scalar zero

diff --git a/src/gallium/auxiliary/gallivm/lp_bld_const.c b/src/gallium/auxiliary/gallivm/lp_bld_const.c
index 53447757e8e23ba6f24a0c089af4761983f52cc1..8a275fa72f386d46c299dd4b0968ab4052e12284 100644 (file)
--- 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);
+   }
 }