- backport from 11.3.1-2: update from releases/gcc-11-branch (#2077536)
- backport from 11.3.1-2: fix bogus -Wuninitialized warning on va_arg with complex types on x86_64 (PR target/105331) - backport from 11.3.1-2: remove bogus assertion in std::from_chars (PR libstdc++/105324)epel9
Robert Scheck
3 years ago
parent
85591675cb
commit
a7d73f1ec2
@ -1,48 +0,0 @@
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2022-04-01 Jakub Jelinek <jakub@redhat.com>
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PR target/105123
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* config/i386/i386-expand.c (ix86_expand_vector_init_general): Avoid
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using word as target for expand_simple_binop when doing ASHIFT and
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IOR.
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* gcc.target/i386/pr105123.c: New test.
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--- gcc/config/i386/i386-expand.c.jj 2022-03-19 13:52:53.000000000 +0100
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+++ gcc/config/i386/i386-expand.c 2022-04-01 16:51:27.253154191 +0200
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@@ -14479,9 +14479,9 @@ quarter:
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else
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{
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word = expand_simple_binop (word_mode, ASHIFT, word, shift,
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- word, 1, OPTAB_LIB_WIDEN);
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+ NULL_RTX, 1, OPTAB_LIB_WIDEN);
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word = expand_simple_binop (word_mode, IOR, word, elt,
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- word, 1, OPTAB_LIB_WIDEN);
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+ NULL_RTX, 1, OPTAB_LIB_WIDEN);
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}
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}
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--- gcc/testsuite/gcc.target/i386/pr105123.c.jj 2022-04-01 16:56:44.549625810 +0200
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+++ gcc/testsuite/gcc.target/i386/pr105123.c 2022-04-01 16:56:33.569782511 +0200
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@@ -0,0 +1,22 @@
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+/* PR target/105123 */
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+/* { dg-do run { target sse2_runtime } } */
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+/* { dg-options "-msse2" } */
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+/* { dg-additional-options "-mtune=i686" { target ia32 } } */
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+
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+typedef unsigned short __attribute__((__vector_size__ (4 * sizeof (unsigned short)))) V;
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+
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+V
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+foo (unsigned short u, V v)
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+{
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+ return __builtin_shuffle (u * v, v);
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+}
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+
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+int
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+main ()
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+{
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+ V x = foo (1, (V) { 0, 1, 2, 3 });
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+ for (unsigned i = 0; i < 4; i++)
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+ if (x[i] != i)
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+ __builtin_abort ();
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+ return 0;
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+}
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@ -0,0 +1,33 @@
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2022-04-21 Jakub Jelinek <jakub@redhat.com>
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PR target/105331
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* config/i386/i386.c (ix86_gimplify_va_arg): Mark va_arg_tmp
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temporary TREE_ADDRESSABLE before trying to gimplify ADDR_EXPR
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of it.
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* gcc.dg/pr105331.c: New test.
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--- gcc/config/i386/i386.c.jj 2022-04-12 09:20:07.566662842 +0200
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+++ gcc/config/i386/i386.c 2022-04-21 12:03:32.201951522 +0200
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@@ -4891,6 +4891,7 @@ ix86_gimplify_va_arg (tree valist, tree
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{
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int i, prev_size = 0;
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tree temp = create_tmp_var (type, "va_arg_tmp");
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+ TREE_ADDRESSABLE (temp) = 1;
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/* addr = &temp; */
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t = build1 (ADDR_EXPR, build_pointer_type (type), temp);
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--- gcc/testsuite/gcc.dg/pr105331.c.jj 2022-04-21 12:09:34.398906718 +0200
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+++ gcc/testsuite/gcc.dg/pr105331.c 2022-04-21 12:09:07.304283903 +0200
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@@ -0,0 +1,11 @@
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+/* PR target/105331 */
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+/* { dg-do compile } */
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+/* { dg-options "-O -Wuninitialized" } */
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+
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+#include <stdarg.h>
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+
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+int
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+foo (va_list *va)
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+{
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+ return va_arg (*va, double _Complex); /* { dg-bogus "may be used uninitialized" } */
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+}
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