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| author |   Chen Qi <Qi.Chen@windriver.com> | 2017-11-08 10:33:52 +0800 |
|---|---|---|
| committer |   Richard Purdie <richard.purdie@linuxfoundation.org> | 2017-11-10 14:44:31 +0000 |
| commit | cfa13e5c756849820644d86d1882602649db6a9c (patch) | |
| tree | d53120e03a40d180156c323f9201362895b19440 /meta/recipes-devtools | |
| parent | 3937c9ed534398ede1576abff8934a67a4017343 (diff) | |
| download | openembedded-core-contrib-cfa13e5c756849820644d86d1882602649db6a9c.tar.gz | |
gcc: backport patch to fix miscompilation on mips64
Backport a patch to fix miscompilation on mips64.
We've observed strange behaviour of `systemctl status <xxx> on qemumips64.
The output of the command is like `systemctl show <xxx>', which is incorrect.
The problem is due to the miscompilation of gcc for mips64 platform, thus
backporting patch from upstream to fix this problem.
[YOCTO #12266]
Signed-off-by: Chen Qi <Qi.Chen@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Diffstat (limited to 'meta/recipes-devtools')
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc-7.2.inc | 1 | ||||
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc-7.2/0001-PR-rtl-optimization-81803.patch | 52 |
2 files changed, 53 insertions, 0 deletions
diff --git a/meta/recipes-devtools/gcc/gcc-7.2.inc b/meta/recipes-devtools/gcc/gcc-7.2.inc index a2cb288ba0..1d40cba731 100644 --- a/meta/recipes-devtools/gcc/gcc-7.2.inc +++ b/meta/recipes-devtools/gcc/gcc-7.2.inc @@ -79,6 +79,7 @@ SRC_URI = "\ " BACKPORTS = "\ file://0051-ARM-PR-82445-suppress-32-bit-aligned-ldrd-strd-peeph.patch \ + file://0001-PR-rtl-optimization-81803.patch \ " SRC_URI[md5sum] = "ff370482573133a7fcdd96cd2f552292" SRC_URI[sha256sum] = "1cf7adf8ff4b5aa49041c8734bbcf1ad18cc4c94d0029aae0f4e48841088479a" diff --git a/meta/recipes-devtools/gcc/gcc-7.2/0001-PR-rtl-optimization-81803.patch b/meta/recipes-devtools/gcc/gcc-7.2/0001-PR-rtl-optimization-81803.patch new file mode 100644 index 0000000000..292e734a2f --- /dev/null +++ b/meta/recipes-devtools/gcc/gcc-7.2/0001-PR-rtl-optimization-81803.patch @@ -0,0 +1,52 @@ +From 5cbb8e6b1122092b3eaabd4270b2f316aa40407c Mon Sep 17 00:00:00 2001 +From: ebotcazou <ebotcazou@138bc75d-0d04-0410-961f-82ee72b054a4> +Date: Tue, 31 Oct 2017 18:27:52 +0000 +Subject: [PATCH] PR rtl-optimization/81803 * lra-constraints.c + (curr_insn_transform): Also reload the whole register for a strict subreg + no wider than a word if this is for a WORD_REGISTER_OPERATIONS target. + +git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@254275 138bc75d-0d04-0410-961f-82ee72b054a4 + +Upstream-Status: Backport + +This patch removes changes to Changelog from the original patch upstream. This is +because we are backporting a patch to a stable version, making changes to Changelog, +especially up '* GCC 7.2.0 released.', feels a little weird. + +Signed-off-by: Chen Qi <Qi.Chen@windriver.com> +--- + gcc/lra-constraints.c | 11 ++++++++--- + 2 files changed, 16 insertions(+), 3 deletions(-) + +diff --git a/gcc/lra-constraints.c b/gcc/lra-constraints.c +index a423f069836..3758409bb9c 100644 +--- a/gcc/lra-constraints.c ++++ b/gcc/lra-constraints.c +@@ -4207,8 +4207,9 @@ curr_insn_transform (bool check_only_p) + reg = SUBREG_REG (*loc); + byte = SUBREG_BYTE (*loc); + if (REG_P (reg) +- /* Strict_low_part requires reload the register not +- the sub-register. */ ++ /* Strict_low_part requires reloading the register and not ++ just the subreg. Likewise for a strict subreg no wider ++ than a word for WORD_REGISTER_OPERATIONS targets. */ + && (curr_static_id->operand[i].strict_low + || (!paradoxical_subreg_p (mode, GET_MODE (reg)) + && (hard_regno +@@ -4219,7 +4220,11 @@ curr_insn_transform (bool check_only_p) + && (goal_alt[i] == NO_REGS + || (simplify_subreg_regno + (ira_class_hard_regs[goal_alt[i]][0], +- GET_MODE (reg), byte, mode) >= 0))))) ++ GET_MODE (reg), byte, mode) >= 0))) ++ || (GET_MODE_PRECISION (mode) ++ < GET_MODE_PRECISION (GET_MODE (reg)) ++ && GET_MODE_SIZE (GET_MODE (reg)) <= UNITS_PER_WORD ++ && WORD_REGISTER_OPERATIONS))) + { + /* An OP_INOUT is required when reloading a subreg of a + mode wider than a word to ensure that data beyond the +-- +2.13.0 + |