diff options
Diffstat (limited to 'sys-devel/gcc/files/gcc-14.0.1_pre20240303-uninit.patch')
| -rw-r--r-- | sys-devel/gcc/files/gcc-14.0.1_pre20240303-uninit.patch | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/sys-devel/gcc/files/gcc-14.0.1_pre20240303-uninit.patch b/sys-devel/gcc/files/gcc-14.0.1_pre20240303-uninit.patch deleted file mode 100644 index 5ad41c4581a9..000000000000 --- a/sys-devel/gcc/files/gcc-14.0.1_pre20240303-uninit.patch +++ /dev/null @@ -1,48 +0,0 @@ -https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=901e7bdab70e2275723ac31dacbbce0b6f68f4f4 - -From 901e7bdab70e2275723ac31dacbbce0b6f68f4f4 Mon Sep 17 00:00:00 2001 -From: Jakub Jelinek <jakub@redhat.com> -Date: Mon, 4 Mar 2024 19:23:02 +0100 -Subject: [PATCH] combine: Fix recent WORD_REGISTER_OPERATIONS check [PR113010] - -On Mon, Mar 04, 2024 at 05:18:39PM +0100, Rainer Orth wrote: -> unfortunately, the patch broke Solaris/SPARC bootstrap -> (sparc-sun-solaris2.11): -> -> .../gcc/combine.cc: In function 'rtx_code simplify_comparison(rtx_code, rtx_def**, rtx_def**)': -> .../gcc/combine.cc:12101:25: error: '*(unsigned int*)((char*)&inner_mode + offsetof(scalar_int_mode, scalar_int_mode::m_mode))' may be used uninitialized [-Werror=maybe-uninitialized] -> 12101 | scalar_int_mode mode, inner_mode, tmode; -> | ^~~~~~~~~~ - -I don't see how it could ever work properly, inner_mode in that spot is -just uninitialized. - -I think we shouldn't worry about paradoxical subregs of non-scalar_int_mode -REGs/MEMs and for the scalar_int_mode ones should initialize inner_mode -before we use it. -Another option would be to use -maybe_lt (GET_MODE_PRECISION (GET_MODE (SUBREG_REG (op0))), BITS_PER_WORD) -and -load_extend_op (GET_MODE (SUBREG_REG (op0))) == ZERO_EXTEND, -or set machine_mode smode = GET_MODE (SUBREG_REG (op0)); and use it in -those two spots. - -2024-03-04 Jakub Jelinek <jakub@redhat.com> - - PR rtl-optimization/113010 - * combine.cc (simplify_comparison): Guard the - WORD_REGISTER_OPERATIONS check on scalar_int_mode of SUBREG_REG - and initialize inner_mode. ---- a/gcc/combine.cc -+++ b/gcc/combine.cc -@@ -12554,6 +12554,8 @@ simplify_comparison (enum rtx_code code, rtx *pop0, rtx *pop1) - if (paradoxical_subreg_p (op0)) - { - if (WORD_REGISTER_OPERATIONS -+ && is_a <scalar_int_mode> (GET_MODE (SUBREG_REG (op0)), -+ &inner_mode) - && GET_MODE_PRECISION (inner_mode) < BITS_PER_WORD - /* On WORD_REGISTER_OPERATIONS targets the bits - beyond sub_mode aren't considered undefined, --- -2.39.3 |