X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fsparc%2Fsparc_stackframe.c;h=23283f417850ced7fd1b72be3ac2d198955ba2eb;hb=cf8cb33a340cf13eabad65f2fa5b27cfb4c1db67;hp=b14a17cf8cec2795c463dd5a758541049d5a9423;hpb=0c6c4fcf2dd1d2f28194b04e205789f06584c23e;p=libfirm

diff --git a/ir/be/sparc/sparc_stackframe.c b/ir/be/sparc/sparc_stackframe.c
index b14a17cf8..23283f417 100644
--- a/ir/be/sparc/sparc_stackframe.c
+++ b/ir/be/sparc/sparc_stackframe.c
@@ -50,9 +50,6 @@ static void set_irn_sp_bias(ir_node *node, int new_bias)
 static void process_bias(ir_node *block, bool sp_relative, int bias,
                          int free_bytes)
 {
-	const ir_edge_t *edge;
-	ir_node         *irn;
-
 	mark_Block_block_visited(block);
 
 	/* process schedule */
@@ -68,6 +65,14 @@ static void process_bias(ir_node *block, bool sp_relative, int bias,
 			arch_set_frame_offset(irn, offset);
 		}
 
+		/* The additional alignment bytes cannot be used
+		 * anymore after alloca. */
+		if (is_sparc_SubSP(irn)) {
+			free_bytes = 0;
+		} else if (is_sparc_AddSP(irn)) {
+			assert(free_bytes == 0);
+		}
+
 		irn_bias = arch_get_sp_bias(irn);
 		if (irn_bias == 0) {
 			/* do nothing */