From b9553e20ad92d1c29416d72061816712b7bea39d Mon Sep 17 00:00:00 2001 From: Andreas Krebbel Date: Wed, 24 Aug 2016 10:56:37 +0000 Subject: [PATCH] Revert "Drop excess size used for run time allocated stack variables." This patch caused a bootstrap failure on AIX. 2016-08-24 Andreas Krebbel Revert 2016-08-23 Dominik Vogt * explow.c (get_dynamic_stack_size): Take known alignment of stack pointer + STACK_DYNAMIC_OFFSET into account when calculating the size needed. From-SVN: r239735 --- gcc/ChangeLog | 9 +++++++++ gcc/explow.c | 12 +++--------- 2 files changed, 12 insertions(+), 9 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 8d104ec8f28..66ec428cc8e 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,12 @@ +2016-08-24 Andreas Krebbel + + Revert + 2016-08-23 Dominik Vogt + + * explow.c (get_dynamic_stack_size): Take known alignment of stack + pointer + STACK_DYNAMIC_OFFSET into account when calculating the size + needed. + 2016-08-24 Thomas Preud'homme * doc/fragments.texi (MULTILIB_REUSE): Mention that only options in diff --git a/gcc/explow.c b/gcc/explow.c index f97a214f655..b14291d8653 100644 --- a/gcc/explow.c +++ b/gcc/explow.c @@ -1224,15 +1224,9 @@ get_dynamic_stack_size (rtx *psize, unsigned size_align, example), so we must preventively align the value. We leave space in SIZE for the hole that might result from the alignment operation. */ - unsigned known_align = REGNO_POINTER_ALIGN (VIRTUAL_STACK_DYNAMIC_REGNUM); - if (known_align == 0) - known_align = BITS_PER_UNIT; - if (required_align > known_align) - { - extra = (required_align - known_align) / BITS_PER_UNIT; - size = plus_constant (Pmode, size, extra); - size = force_operand (size, NULL_RTX); - } + extra = (required_align - BITS_PER_UNIT) / BITS_PER_UNIT; + size = plus_constant (Pmode, size, extra); + size = force_operand (size, NULL_RTX); if (flag_stack_usage_info && pstack_usage_size) *pstack_usage_size += extra; -- 2.30.2