[PATCH] Implementation of asm goto outputs

gcc/
	* cfgexpand.c (expand_asm_stmt): Output asm goto with outputs too.
	Place insns after asm goto on edges.
	* doc/extend.texi: Reflect the changes in asm goto documentation.
	* gimple.c (gimple_build_asm_1): Remove an assert checking output
	absence for asm goto.
	* gimple.h (gimple_asm_label_op, gimple_asm_set_label_op): Take
	possible asm goto outputs into account.
	* ira.c (ira): Remove critical edges for potential asm goto output
	reloads.
	(ira_nullify_asm_goto): New function.
	* ira.h (ira_nullify_asm_goto): New prototype.
	* lra-assigns.c (lra_split_hard_reg_for): Use ira_nullify_asm_goto.
	Check that splitting is done inside a basic block.
	* lra-constraints.c (curr_insn_transform): Permit output reloads
	for any jump insn.
	* lra-spills.c (lra_final_code_change): Remove USEs added in ira
	for asm gotos.
	* lra.c (lra_process_new_insns): Place output reload insns after
	jumps in the beginning of destination BBs.
	* reload.c (find_reloads): Report error for asm gotos with
	outputs.  Modify them to keep CFG consistency to avoid crashes.
	* tree-into-ssa.c (rewrite_stmt): Don't put debug stmt after asm
	goto.

gcc/c/
	* c-parser.c (c_parser_asm_statement): Parse outputs for asm
	goto too.
	* c-typeck.c (build_asm_expr): Remove an assert checking output
	absence for asm goto.

gcc/cp
	* parser.c (cp_parser_asm_definition): Parse outputs for asm
	goto too.

gcc/testsuite/
	* c-c++-common/asmgoto-2.c: Permit output in asm goto.
	* gcc.c-torture/compile/asmgoto-2.c: New.
	* gcc.c-torture/compile/asmgoto-3.c: New.
	* gcc.c-torture/compile/asmgoto-4.c: New.
	* gcc.c-torture/compile/asmgoto-5.c: New.

1 files changed, 2 insertions, 2 deletions

diff --git a/gcc/gimple.h b/gcc/gimple.h
index 62b5a8a..d359f78 100644
--- a/gcc/gimple.h
+++ b/gcc/gimple.h
@@ -4025,7 +4025,7 @@ static inline tree
 gimple_asm_label_op (const gasm *asm_stmt, unsigned index)
 {
   gcc_gimple_checking_assert (index < asm_stmt->nl);
-  return asm_stmt->op[index + asm_stmt->ni + asm_stmt->nc];
+  return asm_stmt->op[index + asm_stmt->no + asm_stmt->ni + asm_stmt->nc];
 }
 
 /* Set LABEL_OP to be label operand INDEX in GIMPLE_ASM ASM_STMT.  */
@@ -4035,7 +4035,7 @@ gimple_asm_set_label_op (gasm *asm_stmt, unsigned index, tree label_op)
 {
   gcc_gimple_checking_assert (index < asm_stmt->nl
 			      && TREE_CODE (label_op) == TREE_LIST);
-  asm_stmt->op[index + asm_stmt->ni + asm_stmt->nc] = label_op;
+  asm_stmt->op[index + asm_stmt->no + asm_stmt->ni + asm_stmt->nc] = label_op;
 }
 
 /* Return the string representing the assembly instruction in