From 472e0df9f0f70801be6a5097799d3fefba9ad078 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Thu, 7 May 2009 17:27:40 +0200 Subject: re PR middle-end/40057 (Incorrect right shift by 31 with long long) PR middle-end/40057 * dojump.c (prefer_and_bit_test): Use immed_double_const instead of GEN_INT for 1 << bitnum. (do_jump) : Use build_int_cst_wide_type instead of build_int_cst_type. * gcc.c-torture/execute/pr40057.c: New test. From-SVN: r147241 --- gcc/dojump.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) (limited to 'gcc/dojump.c') diff --git a/gcc/dojump.c b/gcc/dojump.c index 715e7373eee..36430851393 100644 --- a/gcc/dojump.c +++ b/gcc/dojump.c @@ -141,7 +141,8 @@ prefer_and_bit_test (enum machine_mode mode, int bitnum) } /* Fill in the integers. */ - XEXP (and_test, 1) = GEN_INT ((unsigned HOST_WIDE_INT) 1 << bitnum); + XEXP (and_test, 1) + = immed_double_const ((unsigned HOST_WIDE_INT) 1 << bitnum, 0, mode); XEXP (XEXP (shift_test, 0), 1) = GEN_INT (bitnum); return (rtx_cost (and_test, IF_THEN_ELSE, optimize_insn_for_speed_p ()) @@ -474,10 +475,10 @@ do_jump (tree exp, rtx if_false_label, rtx if_true_label) && prefer_and_bit_test (TYPE_MODE (argtype), TREE_INT_CST_LOW (shift))) { - HOST_WIDE_INT mask = (HOST_WIDE_INT) 1 - << TREE_INT_CST_LOW (shift); + unsigned HOST_WIDE_INT mask + = (unsigned HOST_WIDE_INT) 1 << TREE_INT_CST_LOW (shift); do_jump (build2 (BIT_AND_EXPR, argtype, arg, - build_int_cst_type (argtype, mask)), + build_int_cst_wide_type (argtype, mask, 0)), clr_label, set_label); break; } -- cgit v1.2.1