[RFC/PATCH 2/2] sparse, llvm: Fix varargs functions

[Pekka Enberg <penberg@kernel.org>]

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

We need to tell llvm about it or it won't generate the proper
stack frame & argument list on some architectures.

Cc: Christopher Li <sparse@chrisli.org>
Cc: Jeff Garzik <jgarzik@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[ penberg@kernel.org: Fix function pointer calls ]
Signed-off-by: Pekka Enberg <penberg@kernel.org>
---
 sparse-llvm.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/sparse-llvm.c b/sparse-llvm.c
index a291a0d..9226a21 100644
--- a/sparse-llvm.c
+++ b/sparse-llvm.c
@@ -79,7 +79,7 @@ static LLVMTypeRef sym_func_type(LLVMModuleRef module, struct symbol *sym)
 		arg_type[idx++] = symbol_type(module, arg_sym);
 	} END_FOR_EACH_PTR(arg);
 	func_type = LLVMFunctionType(ret_type, arg_type, n_arg,
-				     /* varargs? */ 0);
+				     sym->ctype.base_type->variadic);
 
 	return func_type;
 }
@@ -744,7 +744,7 @@ static LLVMTypeRef get_func_type(struct function *fn, struct instruction *insn)
 	} END_FOR_EACH_PTR(arg);
 
 	func_type = LLVMFunctionType(ret_type, arg_type, n_arg,
-				     /* varargs? */ 0);
+				     insn->fntype->variadic);
 
 	return func_type;
 }
-- 
1.7.6.4

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