autoprofiledbootstrap build produces new warnings since inlining decisions
are different from other builds. This patch contains fixes and workarounds
for those warnings.
Tested on x86_64-pc-linux-gnu.
gcc/ChangeLog:
* config/i386/i386-expand.cc (expand_vec_perm_interleave2): Work around
-Wstringop-overflow false positive during autoprofiledbootstrap
* ipa-devirt.cc (debug_tree_odr_name): Fix for -Wformat-overflow
warning during autoprofiledbootstrap
* lra-eliminations.cc (setup_can_eliminate): Work around
-Wmaybe-uninitialized false positive during autoprofiledbootstrap
* opts-common.cc (candidates_list_and_hint): Work around
-Wstringop-overflow false positive during autoprofiledbootstrap
* tree-ssa-ccp.cc (bit_value_unop): Work around -Wmaybe-uninitialized
false positive during autoprofiledbootstrap
* wide-int.h (wi::copy): Work around -Wmaybe-uninitialized false
positive during autoprofiledbootstrap
---
gcc/config/i386/i386-expand.cc | 11 +++++++++++
gcc/ipa-devirt.cc | 3 ++-
gcc/lra-eliminations.cc | 11 +++++++++++
gcc/opts-common.cc | 1 +
gcc/tree-ssa-ccp.cc | 11 +++++++++++
gcc/wide-int.h | 11 +++++++++++
6 files changed, 47 insertions(+), 1 deletion(-)
diff --git a/gcc/config/i386/i386-expand.cc b/gcc/config/i386/i386-expand.cc
index 634fe61ba79..be9f912775b 100644
--- a/gcc/config/i386/i386-expand.cc
+++ b/gcc/config/i386/i386-expand.cc
@@ -20419,6 +20419,13 @@ expand_vec_perm_pblendv (struct expand_vec_perm_d *d)
static bool expand_vec_perm_interleave3 (struct expand_vec_perm_d *d);
+/* Work around -Wstringop-overflow false positive during
autoprofiledbootstrap. */
+
+# if GCC_VERSION >= 7001
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wstringop-overflow"
+#endif
+
/* A subroutine of ix86_expand_vec_perm_const_1. Try to simplify
a two vector permutation into a single vector permutation by using
an interleave operation to merge the vectors. */
@@ -20737,6 +20744,10 @@ expand_vec_perm_interleave2 (struct expand_vec_perm_d
*d)
return true;
}
+# if GCC_VERSION >= 7001
+#pragma GCC diagnostic pop
+#endif
+
/* A subroutine of ix86_expand_vec_perm_const_1. Try to simplify
a single vector cross-lane permutation into vpermq followed
by any of the single insn permutations. */
diff --git a/gcc/ipa-devirt.cc b/gcc/ipa-devirt.cc
index 819860258d1..36ea266e834 100644
--- a/gcc/ipa-devirt.cc
+++ b/gcc/ipa-devirt.cc
@@ -4033,7 +4033,8 @@ debug_tree_odr_name (tree type, bool demangle)
odr = cplus_demangle (odr, opts);
}
- fprintf (stderr, "%s\n", odr);
+ if (odr != NULL)
+ fprintf (stderr, "%s\n", odr);
}
/* Register ODR enum so we later stream record about its values. */
diff --git a/gcc/lra-eliminations.cc b/gcc/lra-eliminations.cc
index 42206366669..05e2a7e0d68 100644
--- a/gcc/lra-eliminations.cc
+++ b/gcc/lra-eliminations.cc
@@ -138,6 +138,13 @@ lra_debug_elim_table (void)
print_elim_table (stderr);
}
+/* Work around -Wmaybe-uninitialized false positive during
autoprofiledbootstrap. */
+
+# if GCC_VERSION >= 4007
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#endif
+
/* Setup possibility of elimination in elimination table element EP to
VALUE. Setup FRAME_POINTER_NEEDED if elimination from frame
pointer to stack pointer is not possible anymore. */
@@ -152,6 +159,10 @@ setup_can_eliminate (class lra_elim_table *ep, bool value)
REGNO_POINTER_ALIGN (HARD_FRAME_POINTER_REGNUM) = 0;
}
+# if GCC_VERSION >= 4007
+#pragma GCC diagnostic pop
+#endif
+
/* Map: eliminable "from" register -> its current elimination,
or NULL if none. The elimination table may contain more than
one elimination for the same hard register, but this map specifies
diff --git a/gcc/opts-common.cc b/gcc/opts-common.cc
index 23ddcaa3b55..0bb8e34e2b0 100644
--- a/gcc/opts-common.cc
+++ b/gcc/opts-common.cc
@@ -1388,6 +1388,7 @@ candidates_list_and_hint (const char *arg, char *&str,
p[len] = ' ';
p += len + 1;
}
+ gcc_assert(p > str);
p[-1] = '\0';
return find_closest_string (arg, &candidates);
}
diff --git a/gcc/tree-ssa-ccp.cc b/gcc/tree-ssa-ccp.cc
index 03a984f2adf..a54e5a90464 100644
--- a/gcc/tree-ssa-ccp.cc
+++ b/gcc/tree-ssa-ccp.cc
@@ -1976,6 +1976,13 @@ bit_value_binop (enum tree_code code, signop sgn, int
width,
}
}
+/* Work around -Wmaybe-uninitialized false positive during
autoprofiledbootstrap. */
+
+# if GCC_VERSION >= 4007
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#endif
+
/* Return the propagation value when applying the operation CODE to
the value RHS yielding type TYPE. */
@@ -2011,6 +2018,10 @@ bit_value_unop (enum tree_code code, tree type, tree rhs)
return val;
}
+# if GCC_VERSION >= 4007
+#pragma GCC diagnostic pop
+#endif
+
/* Return the propagation value when applying the operation CODE to
the values RHS1 and RHS2 yielding type TYPE. */
diff --git a/gcc/wide-int.h b/gcc/wide-int.h
index 6be343c0eb5..9c50dd869b6 100644
--- a/gcc/wide-int.h
+++ b/gcc/wide-int.h
@@ -1806,6 +1806,13 @@ wi::get_binary_precision (const T1 &x, const T2 &y)
get_binary_result (x, y));
}
+/* Work around -Wmaybe-uninitialized false positive during
autoprofiledbootstrap. */
+
+# if GCC_VERSION >= 4007
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wmaybe-uninitialized"
+#endif
+
/* Copy the contents of Y to X, but keeping X's current precision. */
template <typename T1, typename T2>
inline void
@@ -1821,6 +1828,10 @@ wi::copy (T1 &x, const T2 &y)
x.set_len (len, y.is_sign_extended);
}
+# if GCC_VERSION >= 4007
+#pragma GCC diagnostic pop
+#endif
+
/* Return true if X fits in a HOST_WIDE_INT with no loss of precision. */
template <typename T>
inline bool
--
2.25.1
