[PATCH 2/2] llvm: default init of arrays & structs

[Luc Van Oostenryck <luc.vanoostenryck@gmail.com>]

Linearization of arrays & structs default initialization is done
as if these objects would be an integer as large as the object.
This integer is then simply zero-initialized.
(This may be objectionable and will be done differently).

However, sparse-llvm is not ready to handle this situation where
a non-scalar is initialized with a scalar value.

Workaround this by using LLVMConstNull() when possible.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
---
 sparse-llvm.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sparse-llvm.c b/sparse-llvm.c
index 4c64f1aaa..a1a48fd0f 100644
--- a/sparse-llvm.c
+++ b/sparse-llvm.c
@@ -354,6 +354,12 @@ static LLVMValueRef constant_value(unsigned long long val, LLVMTypeRef dtype)
 	case LLVMIntegerTypeKind:
 		result = LLVMConstInt(dtype, val, 1);
 		break;
+	case LLVMArrayTypeKind:
+	case LLVMStructTypeKind:
+		if (val != 0)
+			return NULL;
+		result = LLVMConstNull(dtype);
+		break;
 	default:
 		return NULL;
 	}
-- 
2.15.0