From 7ad291c0e8e6a489d98741eb958736cc5f09d0b7 Mon Sep 17 00:00:00 2001 From: Martin Liska Date: Wed, 11 Nov 2015 15:04:47 +0100 Subject: [PATCH] re PR rtl-optimization/68287 (conditional jump or move depends on uninitialized value in lra-lives.c:1048) Fix PR rtl-optimization/68287 PR rtl-optimization/68287 * lra-lives.c (lra_create_live_ranges_1): Reserve the right number of elements. Co-Authored-By: Richard Biener From-SVN: r230163 --- gcc/ChangeLog | 7 +++++++ gcc/lra-lives.c | 4 ++-- 2 files changed, 9 insertions(+), 2 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index e955e4175b9..fb7e4f071f0 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2015-11-11 Martin Liska + Richard Biener + + PR rtl-optimization/68287 + * lra-lives.c (lra_create_live_ranges_1): Reserve the right + number of elements. + 2015-11-11 Simon Dardis * config/mips/mips.c (mips_breakable_sequence_p): New function. diff --git a/gcc/lra-lives.c b/gcc/lra-lives.c index 9453759a521..5f76a87de97 100644 --- a/gcc/lra-lives.c +++ b/gcc/lra-lives.c @@ -1241,8 +1241,8 @@ lra_create_live_ranges_1 (bool all_p, bool dead_insn_p) unused_set = sparseset_alloc (max_regno); curr_point = 0; unsigned new_length = get_max_uid () * 2; - if (point_freq_vec.length () < new_length) - point_freq_vec.safe_grow (new_length); + point_freq_vec.truncate (0); + point_freq_vec.reserve_exact (new_length); lra_point_freq = point_freq_vec.address (); int *post_order_rev_cfg = XNEWVEC (int, last_basic_block_for_fn (cfun)); int n_blocks_inverted = inverted_post_order_compute (post_order_rev_cfg); -- 2.30.2