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gcc 10.2.0

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This commit is contained in:
Idris Kalp
2020-10-21 03:23:39 +03:00
parent 1eaf726617
commit 1407ccf67b
5 changed files with 274 additions and 9 deletions
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system/devel/gcc/files/archlinux/fs64270.patch
+26
View File
@@ -0,0 +1,26 @@
Disable ssp on -nostdlib, -nodefaultlibs and -ffreestanding
--- a/gcc/gcc.c 2017-07-04 09:15:57.740793000 +0200
+++ b/gcc/gcc.c 2018-03-02 13:58:44.387741114 +0100
@@ -857,6 +857,12 @@ proper position among the other output f
#define LINK_GCC_C_SEQUENCE_SPEC "%G %L %G"
#endif
+#ifdef ENABLE_DEFAULT_SSP
+#define NO_SSP_SPEC "%{nostdlib|nodefaultlibs|ffreestanding:-fno-stack-protector} "
+#else
+#define NO_SSP_SPEC ""
+#endif
+
#ifndef LINK_SSP_SPEC
#ifdef TARGET_LIBC_PROVIDES_SSP
#define LINK_SSP_SPEC "%{fstack-protector|fstack-protector-all" \
@@ -1131,7 +1148,7 @@ static const char *cc1_options =
%{-version:--version}\
%{-help=*:--help=%*}\
%{!fsyntax-only:%{S:%W{o*}%{!o*:-o %b.s}}}\
- %{fsyntax-only:-o %j} %{-param*}\
+ %{fsyntax-only:-o %j} %{-param*} " NO_SSP_SPEC "\
%{coverage:-fprofile-arcs -ftest-coverage}\
%{fprofile-arcs|fprofile-generate*|coverage:\
%{!fprofile-update=singel:\
system/devel/gcc/files/archlinux/ipa-fix-ICE-in-get_default_value.patch
+80
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@@ -0,0 +1,80 @@
From f91770216eade83f068528c1e4f00e2ac3b23044 Mon Sep 17 00:00:00 2001
From: Martin Liska <mliska@suse.cz>
Date: Thu, 13 Aug 2020 09:38:41 +0200
Subject: [PATCH] ipa: fix ICE in get_default_value
The patch aligns code with ipcp_bits_lattice::set_to_constant
where we properly mask m_value with m_mask. The same should
be done here.
gcc/ChangeLog:
PR ipa/96482
* ipa-cp.c (ipcp_bits_lattice::meet_with_1): Mask m_value
with m_mask.
gcc/testsuite/ChangeLog:
PR ipa/96482
* gcc.dg/ipa/pr96482-2.c: New test.
---
gcc/ipa-cp.c | 2 +-
gcc/testsuite/gcc.dg/ipa/pr96482-2.c | 33 ++++++++++++++++++++++++++++
2 files changed, 34 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/gcc.dg/ipa/pr96482-2.c
diff --git a/gcc/ipa-cp.c b/gcc/ipa-cp.c
index 2b21280d919..e4910a04ffa 100644
--- a/gcc/ipa-cp.c
+++ b/gcc/ipa-cp.c
@@ -1048,7 +1048,7 @@ ipcp_bits_lattice::meet_with_1 (widest_int value, widest_int mask,
widest_int old_mask = m_mask;
m_mask = (m_mask | mask) | (m_value ^ value);
- m_value &= value;
+ m_value &= ~m_mask;
if (wi::sext (m_mask, precision) == -1)
return set_to_bottom ();
diff --git a/gcc/testsuite/gcc.dg/ipa/pr96482-2.c b/gcc/testsuite/gcc.dg/ipa/pr96482-2.c
new file mode 100644
index 00000000000..54b71ac4fc0
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/ipa/pr96482-2.c
@@ -0,0 +1,33 @@
+/* PR ipa/96482 */
+/* { dg-do compile } */
+/* { dg-options "-O2" } */
+
+int i2c_transfer();
+void _dev_err();
+
+struct i2c_msg {
+ char bufaddr;
+ int adapterdev;
+} wdt87xx_i2c_xfer_client;
+
+int wdt87xx_i2c_xfer_client_0, wdt87xx_i2c_xfer_rxdata, wdt87xx_get_string_str_idx;
+
+void
+static wdt87xx_i2c_xfer(void *txdata, unsigned rxlen) {
+ struct i2c_msg msgs[] = {wdt87xx_i2c_xfer_client_0, rxlen,
+ wdt87xx_i2c_xfer_rxdata};
+ int error = i2c_transfer(wdt87xx_i2c_xfer_client, msgs);
+ _dev_err("", __func__, error);
+}
+static void wdt87xx_get_string(unsigned len) {
+ char tx_buf[] = {wdt87xx_get_string_str_idx, 3};
+ int rx_len = len + 2;
+ wdt87xx_i2c_xfer(tx_buf, rx_len);
+}
+
+void
+wdt87xx_ts_probe_tx_buf() {
+ wdt87xx_get_string(34);
+ wdt87xx_get_string(8);
+ wdt87xx_i2c_xfer(wdt87xx_ts_probe_tx_buf, 2);
+}
--
2.28.0
system/devel/gcc/files/archlinux/ipa-fix-bit-CPP-when-combined-with-IPA-bit-CP.patch
+147
View File
@@ -0,0 +1,147 @@
From d58f078ce2d53e5dab6b3d0d5f960504268e1894 Mon Sep 17 00:00:00 2001
From: Martin Liska <mliska@suse.cz>
Date: Wed, 12 Aug 2020 09:21:51 +0200
Subject: [PATCH] ipa: fix bit CPP when combined with IPA bit CP
As mentioned in the PR, let's consider the following example:
int
__attribute__((noinline))
foo(int arg)
{
if (arg == 3)
return 1;
if (arg == 4)
return 123;
__builtin_unreachable ();
}
during WPA we find all calls of the function
(yes the call with value 5 is UBSAN):
Node: foo/0:
param [0]: 5 [loc_time: 4, loc_size: 2, prop_time: 0, prop_size: 0]
3 [loc_time: 3, loc_size: 3, prop_time: 0, prop_size: 0]
ctxs: VARIABLE
Bits: value = 0x5, mask = 0x6
in LTRANS we have the following VRP info:
# RANGE [3, 3] NONZERO 3
when we AND masks in get_default_value we end up with 6 & 3 = 2 (0x010).
That means the only second (least significant bit) is unknown and
value (5 = 0x101) & ~mask gives us either 7 (0x111) or 5 (0x101).
That's why if (arg_2(D) == 3) gets optimized to false.
gcc/ChangeLog:
PR ipa/96482
* ipa-cp.c (ipcp_bits_lattice::meet_with_1): Drop value bits
for bits that are unknown.
(ipcp_bits_lattice::set_to_constant): Likewise.
* tree-ssa-ccp.c (get_default_value): Add sanity check that
IPA CP bit info has all bits set to zero in bits that
are unknown.
gcc/testsuite/ChangeLog:
PR ipa/96482
* gcc.dg/ipa/pr96482.c: New test.
---
gcc/ipa-cp.c | 3 +-
gcc/testsuite/gcc.dg/ipa/pr96482.c | 44 ++++++++++++++++++++++++++++++
gcc/tree-ssa-ccp.c | 3 ++
3 files changed, 49 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/gcc.dg/ipa/pr96482.c
diff --git a/gcc/ipa-cp.c b/gcc/ipa-cp.c
index 945a69977f3..2b21280d919 100644
--- a/gcc/ipa-cp.c
+++ b/gcc/ipa-cp.c
@@ -1011,7 +1011,7 @@ ipcp_bits_lattice::set_to_constant (widest_int value, widest_int mask)
{
gcc_assert (top_p ());
m_lattice_val = IPA_BITS_CONSTANT;
- m_value = value;
+ m_value = wi::bit_and (wi::bit_not (mask), value);
m_mask = mask;
return true;
}
@@ -1048,6 +1048,7 @@ ipcp_bits_lattice::meet_with_1 (widest_int value, widest_int mask,
widest_int old_mask = m_mask;
m_mask = (m_mask | mask) | (m_value ^ value);
+ m_value &= value;
if (wi::sext (m_mask, precision) == -1)
return set_to_bottom ();
diff --git a/gcc/testsuite/gcc.dg/ipa/pr96482.c b/gcc/testsuite/gcc.dg/ipa/pr96482.c
new file mode 100644
index 00000000000..68ead798d28
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/ipa/pr96482.c
@@ -0,0 +1,44 @@
+/* PR ipa/96482 */
+/* { dg-do run } */
+/* { dg-options "-O2 -flto" } */
+/* { dg-require-effective-target lto } */
+
+int
+__attribute__((noinline))
+foo(int arg)
+{
+ if (arg == 3)
+ return 1;
+ if (arg == 4)
+ return 123;
+
+ __builtin_unreachable ();
+}
+
+int
+__attribute__((noinline))
+baz(int x)
+{
+ if (x != 0)
+ return foo(3); /* called */
+
+ return 1;
+}
+
+int
+__attribute__((noinline))
+bar(int x)
+{
+ if (x == 0)
+ return foo(5); /* not executed */
+
+ return 1;
+}
+
+int main(int argc, char **argv)
+{
+ if (bar(argc) != baz(argc))
+ __builtin_abort ();
+
+ return 0;
+}
diff --git a/gcc/tree-ssa-ccp.c b/gcc/tree-ssa-ccp.c
index 7e3921869b8..65dffe06530 100644
--- a/gcc/tree-ssa-ccp.c
+++ b/gcc/tree-ssa-ccp.c
@@ -306,6 +306,9 @@ get_default_value (tree var)
{
val.lattice_val = CONSTANT;
val.value = value;
+ widest_int ipa_value = wi::to_widest (value);
+ /* Unknown bits from IPA CP must be equal to zero. */
+ gcc_assert (wi::bit_and (ipa_value, mask) == 0);
val.mask = mask;
if (nonzero_bits != -1)
val.mask &= extend_mask (nonzero_bits,
--
2.28.0