diff options
Diffstat (limited to 'meta/recipes-devtools/gcc/gcc/0001-aarch64-Fix-up-__aarch64_cas16_acq_rel-fallback.patch')
| -rw-r--r-- | meta/recipes-devtools/gcc/gcc/0001-aarch64-Fix-up-__aarch64_cas16_acq_rel-fallback.patch | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/meta/recipes-devtools/gcc/gcc/0001-aarch64-Fix-up-__aarch64_cas16_acq_rel-fallback.patch b/meta/recipes-devtools/gcc/gcc/0001-aarch64-Fix-up-__aarch64_cas16_acq_rel-fallback.patch deleted file mode 100644 index c060accd99..0000000000 --- a/meta/recipes-devtools/gcc/gcc/0001-aarch64-Fix-up-__aarch64_cas16_acq_rel-fallback.patch +++ /dev/null @@ -1,66 +0,0 @@ -Upstream-Status: Backport -Signed-off-by: Ross Burton <ross.burton@arm.com> - -From fd2ec4542fd2975e6d3f2f1c1a2639945a84f9e1 Mon Sep 17 00:00:00 2001 -From: Jakub Jelinek <jakub@redhat.com> -Date: Mon, 3 Aug 2020 22:55:28 +0200 -Subject: [PATCH] aarch64: Fix up __aarch64_cas16_acq_rel fallback - -As mentioned in the PR, the fallback path when LSE is unavailable writes -incorrect registers to the memory if the previous content compares equal -to x0, x1 - it writes copy of x0, x1 from the start of function, but it -should write x2, x3. - -2020-08-03 Jakub Jelinek <jakub@redhat.com> - - PR target/96402 - * config/aarch64/lse.S (__aarch64_cas16_acq_rel): Use x2, x3 instead - of x(tmp0), x(tmp1) in STXP arguments. - - * gcc.target/aarch64/pr96402.c: New test. - -(cherry picked from commit 90b43856fdff7d96d93d22970eca8a86c56e0ddc) ---- - gcc/testsuite/gcc.target/aarch64/pr96402.c | 16 ++++++++++++++++ - libgcc/config/aarch64/lse.S | 2 +- - 2 files changed, 17 insertions(+), 1 deletion(-) - create mode 100644 gcc/testsuite/gcc.target/aarch64/pr96402.c - -diff --git a/gcc/testsuite/gcc.target/aarch64/pr96402.c b/gcc/testsuite/gcc.target/aarch64/pr96402.c -new file mode 100644 -index 00000000000..fa2dddfac15 ---- /dev/null -+++ b/gcc/testsuite/gcc.target/aarch64/pr96402.c -@@ -0,0 +1,16 @@ -+/* PR target/96402 */ -+/* { dg-do run { target int128 } } */ -+/* { dg-options "-moutline-atomics" } */ -+ -+int -+main () -+{ -+ __int128 a = 0; -+ __sync_val_compare_and_swap (&a, (__int128) 0, (__int128) 1); -+ if (a != 1) -+ __builtin_abort (); -+ __sync_val_compare_and_swap (&a, (__int128) 1, (((__int128) 0xdeadbeeffeedbac1ULL) << 64) | 0xabadcafe00c0ffeeULL); -+ if (a != ((((__int128) 0xdeadbeeffeedbac1ULL) << 64) | 0xabadcafe00c0ffeeULL)) -+ __builtin_abort (); -+ return 0; -+} -diff --git a/libgcc/config/aarch64/lse.S b/libgcc/config/aarch64/lse.S -index 64691c601c1..c8fbfbce4fd 100644 ---- a/libgcc/config/aarch64/lse.S -+++ b/libgcc/config/aarch64/lse.S -@@ -203,7 +203,7 @@ STARTFN NAME(cas) - cmp x0, x(tmp0) - ccmp x1, x(tmp1), #0, eq - bne 1f -- STXP w(tmp2), x(tmp0), x(tmp1), [x4] -+ STXP w(tmp2), x2, x3, [x4] - cbnz w(tmp2), 0b - 1: ret - --- -2.26.2 - |