From e264d515e54443e1a50584f7c0dc0af7bc23a0a1 Mon Sep 17 00:00:00 2001 From: jakub Date: Wed, 16 Apr 2008 16:01:57 +0000 Subject: [PATCH] PR c/35739 * tree-nrv.c (tree_nrv): Don't optimize if result_type is GIMPLE reg type. * gcc.dg/dfp/pr35739.c: New test. git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@134351 138bc75d-0d04-0410-961f-82ee72b054a4 --- gcc/ChangeLog | 4 ++++ gcc/testsuite/ChangeLog | 3 +++ gcc/testsuite/gcc.dg/dfp/pr35739.c | 16 ++++++++++++++++ gcc/tree-nrv.c | 7 ++++++- 4 files changed, 29 insertions(+), 1 deletion(-) create mode 100644 gcc/testsuite/gcc.dg/dfp/pr35739.c diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 3797049..57d334c 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,5 +1,9 @@ 2008-04-16 Jakub Jelinek + PR c/35739 + * tree-nrv.c (tree_nrv): Don't optimize if result_type is GIMPLE + reg type. + PR tree-optimization/35899 * tree-inline.c (expand_call_inline): Use GIMPLE_STMT_OPERAND rather than TREE_OPERAND. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 7ba05e8..85f4cb3 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,5 +1,8 @@ 2008-04-16 Jakub Jelinek + PR c/35739 + * gcc.dg/dfp/pr35739.c: New test. + PR tree-optimization/35899 * gcc.dg/pr35899.c: New test. diff --git a/gcc/testsuite/gcc.dg/dfp/pr35739.c b/gcc/testsuite/gcc.dg/dfp/pr35739.c new file mode 100644 index 0000000..d4e1839 --- /dev/null +++ b/gcc/testsuite/gcc.dg/dfp/pr35739.c @@ -0,0 +1,16 @@ +/* PR c/35739 */ +/* { dg-do compile { target *-*-linux* } } */ +/* { dg-options "-O -fpreprocessed -fmudflap" } */ + +_Decimal128 +foo (int n, ...) +{ + int i; + _Decimal128 j = 0; + __builtin_va_list ap; + __builtin_va_start (ap, n); + for (i = 0; i < n; i++) + j += __builtin_va_arg (ap, _Decimal128); + __builtin_va_end (ap); + return j; +} diff --git a/gcc/tree-nrv.c b/gcc/tree-nrv.c index 7330d28..35928ea 100644 --- a/gcc/tree-nrv.c +++ b/gcc/tree-nrv.c @@ -1,5 +1,5 @@ /* Language independent return value optimizations - Copyright (C) 2004, 2005, 2007 Free Software Foundation, Inc. + Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc. This file is part of GCC. @@ -115,6 +115,11 @@ tree_nrv (void) if (!aggregate_value_p (result, current_function_decl)) return 0; + /* If a GIMPLE type is returned in memory, finalize_nrv_r might create + non-GIMPLE. */ + if (is_gimple_reg_type (result_type)) + return 0; + /* Look through each block for assignments to the RESULT_DECL. */ FOR_EACH_BB (bb) { -- 2.7.4