Enable those tests so we won't make too stupid mistakes in 16B atomic implementation anymore.
All these test passed on a Loongson 3C6000/S except atomic-other-int128.c. With GDB patched to support sc.q (https://sourceware.org/pipermail/gdb-patches/2025-August/220034.html) this test also XPASS. gcc/testsuite/ChangeLog: * lib/target-supports.exp (check_effective_target_loongarch_scq_hw): New. (check_effective_target_sync_int_128_runtime): Return 1 on loongarch64-*-* if hardware supports both LSX and SCQ. * gcc.dg/atomic-compare-exchange-5.c: Pass -mlsx -mscq for loongarch64-*-*. * gcc.dg/atomic-exchange-5.c: Likewise. * gcc.dg/atomic-load-5.c: Likewise. * gcc.dg/atomic-op-5.c: Likewise. * gcc.dg/atomic-store-5.c: Likewise. * gcc.dg/atomic-store-6.c: Likewise. * gcc.dg/simulate-thread/atomic-load-int128.c: Likewise. * gcc.dg/simulate-thread/atomic-other-int128.c: Likewise. (dg-final): xfail on loongarch64-*-* because gdb does not handle sc.q properly yet. --- .../gcc.dg/atomic-compare-exchange-5.c | 1 + gcc/testsuite/gcc.dg/atomic-exchange-5.c | 1 + gcc/testsuite/gcc.dg/atomic-load-5.c | 1 + gcc/testsuite/gcc.dg/atomic-op-5.c | 1 + gcc/testsuite/gcc.dg/atomic-store-5.c | 1 + gcc/testsuite/gcc.dg/atomic-store-6.c | 1 + .../simulate-thread/atomic-load-int128.c | 1 + .../simulate-thread/atomic-other-int128.c | 7 ++++++- gcc/testsuite/lib/target-supports.exp | 20 ++++++++++++++++++- 9 files changed, 32 insertions(+), 2 deletions(-) diff --git a/gcc/testsuite/gcc.dg/atomic-compare-exchange-5.c b/gcc/testsuite/gcc.dg/atomic-compare-exchange-5.c index f5d071affe8..8d0b4626218 100644 --- a/gcc/testsuite/gcc.dg/atomic-compare-exchange-5.c +++ b/gcc/testsuite/gcc.dg/atomic-compare-exchange-5.c @@ -3,6 +3,7 @@ /* { dg-do run } */ /* { dg-require-effective-target sync_int_128_runtime } */ /* { dg-options "-mcx16" { target { i?86-*-* x86_64-*-* } } } */ +/* { dg-options "-mlsx -mscq" { target { loongarch64-*-* } } } */ /* Test the execution of __atomic_compare_exchange_n builtin for an int_128. */ diff --git a/gcc/testsuite/gcc.dg/atomic-exchange-5.c b/gcc/testsuite/gcc.dg/atomic-exchange-5.c index 190377f0cd5..ec3837dfdcf 100644 --- a/gcc/testsuite/gcc.dg/atomic-exchange-5.c +++ b/gcc/testsuite/gcc.dg/atomic-exchange-5.c @@ -3,6 +3,7 @@ /* { dg-do run } */ /* { dg-require-effective-target sync_int_128_runtime } */ /* { dg-options "-mcx16" { target { i?86-*-* x86_64-*-* } } } */ +/* { dg-options "-mlsx -mscq" { target { loongarch64-*-* } } } */ /* Test the execution of the __atomic_X builtin for a 16 byte value. */ diff --git a/gcc/testsuite/gcc.dg/atomic-load-5.c b/gcc/testsuite/gcc.dg/atomic-load-5.c index d37d6424892..1cb2baabc7d 100644 --- a/gcc/testsuite/gcc.dg/atomic-load-5.c +++ b/gcc/testsuite/gcc.dg/atomic-load-5.c @@ -3,6 +3,7 @@ /* { dg-do run } */ /* { dg-require-effective-target sync_int_128_runtime } */ /* { dg-options "-mcx16" { target { i?86-*-* x86_64-*-* } } } */ +/* { dg-options "-mlsx -mscq" { target { loongarch64-*-* } } } */ extern void abort(void); diff --git a/gcc/testsuite/gcc.dg/atomic-op-5.c b/gcc/testsuite/gcc.dg/atomic-op-5.c index 1407f3fe3b2..4c6dcef8bf2 100644 --- a/gcc/testsuite/gcc.dg/atomic-op-5.c +++ b/gcc/testsuite/gcc.dg/atomic-op-5.c @@ -3,6 +3,7 @@ /* { dg-do run } */ /* { dg-require-effective-target sync_int_128_runtime } */ /* { dg-options "-mcx16" { target { i?86-*-* x86_64-*-* } } } */ +/* { dg-options "-mlsx -mscq" { target { loongarch64-*-* } } } */ /* Test the execution of the __atomic_*OP builtin routines for an int_128. */ diff --git a/gcc/testsuite/gcc.dg/atomic-store-5.c b/gcc/testsuite/gcc.dg/atomic-store-5.c index a855182bf49..4bc379c722b 100644 --- a/gcc/testsuite/gcc.dg/atomic-store-5.c +++ b/gcc/testsuite/gcc.dg/atomic-store-5.c @@ -3,6 +3,7 @@ /* { dg-do run } */ /* { dg-require-effective-target sync_int_128_runtime } */ /* { dg-options "-mcx16" { target { i?86-*-* x86_64-*-* } } } */ +/* { dg-options "-mlsx -mscq" { target { loongarch64-*-* } } } */ /* Test the execution of the __atomic_store_n builtin for a 16 byte value. */ diff --git a/gcc/testsuite/gcc.dg/atomic-store-6.c b/gcc/testsuite/gcc.dg/atomic-store-6.c index 81499cd716b..78bf2aa02f5 100644 --- a/gcc/testsuite/gcc.dg/atomic-store-6.c +++ b/gcc/testsuite/gcc.dg/atomic-store-6.c @@ -1,6 +1,7 @@ /* { dg-do run } */ /* { dg-require-effective-target sync_int_128_runtime } */ /* { dg-options "-mcx16" { target { i?86-*-* x86_64-*-* } } } */ +/* { dg-options "-mlsx -mscq" { target { loongarch64-*-* } } } */ __int128_t i; diff --git a/gcc/testsuite/gcc.dg/simulate-thread/atomic-load-int128.c b/gcc/testsuite/gcc.dg/simulate-thread/atomic-load-int128.c index 759a83d22f7..6adc7d96620 100644 --- a/gcc/testsuite/gcc.dg/simulate-thread/atomic-load-int128.c +++ b/gcc/testsuite/gcc.dg/simulate-thread/atomic-load-int128.c @@ -1,6 +1,7 @@ /* { dg-do link } */ /* { dg-require-effective-target sync_int_128_runtime } */ /* { dg-options "-mcx16" { target { x86_64-*-* i?86-*-* } } } */ +/* { dg-options "-mlsx -mscq" { target { loongarch64-*-* } } } */ /* { dg-final { simulate-thread } } */ #include <stdio.h> diff --git a/gcc/testsuite/gcc.dg/simulate-thread/atomic-other-int128.c b/gcc/testsuite/gcc.dg/simulate-thread/atomic-other-int128.c index 6aaaa88ef04..5538fa1ff92 100644 --- a/gcc/testsuite/gcc.dg/simulate-thread/atomic-other-int128.c +++ b/gcc/testsuite/gcc.dg/simulate-thread/atomic-other-int128.c @@ -1,7 +1,12 @@ /* { dg-do link } */ /* { dg-require-effective-target sync_int_128_runtime } */ /* { dg-options "-mcx16" { target { x86_64-*-* i?86-*-* } } } */ -/* { dg-final { simulate-thread } } */ +/* { dg-options "-mlsx -mscq" { target { loongarch64-*-* } } } */ + +/* xfail on loongarch64 until the new GDB versions with + https://sourceware.org/pipermail/gdb-patches/2025-August/220034.html + is widely used by distros. */ +/* { dg-final { simulate-thread { xfail loongarch64-*-* } } } */ #include <stdio.h> #include "simulate-thread.h" diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp index 2ab405a1513..4bcca2d3564 100644 --- a/gcc/testsuite/lib/target-supports.exp +++ b/gcc/testsuite/lib/target-supports.exp @@ -10060,7 +10060,13 @@ proc check_effective_target_sync_int_128 { } { # This requires support for both compare-and-swap and true atomic loads. proc check_effective_target_sync_int_128_runtime { } { - return 0 + if { [istarget loongarch64-*-*] + && [check_effective_target_loongarch_sx_hw] + && [check_effective_target_loongarch_scq_hw] } { + return 1 + } else { + return 0 + } } # Return 1 if the target supports atomic operations on "long long". @@ -14321,6 +14327,18 @@ proc check_effective_target_loongarch_asx_hw { } { } "-mlasx"] } +proc check_effective_target_loongarch_scq_hw { } { + return [check_runtime loongarch_scq_hw { + #include <larchintrin.h> + int main (void) + { + if (__cpucfg (2) & (1 << 30)) + return 0; + __builtin_trap (); + } + } ""] +} + # Check whether LoongArch binutils supports call36 relocation. proc check_effective_target_loongarch_call36_support { } { return [check_no_compiler_messages loongarch_call36_support object { -- 2.51.0
