Replace LR.aq/SC.rl pairs with the SEQ_CST LR.aqrl/SC.rl pairs
recommended by table A.6 of the ISA manual.
2023-04-27 Patrick O'Neill <patr...@rivosinc.com>
libgcc/ChangeLog:
* config/riscv/atomic.c: Change LR.aq/SC.rl pairs into
sequentially consistent LR.aqrl/SC.rl pairs.
Signed-off-by: Patrick O'Neill <patr...@rivosinc.com>
---
libgcc/config/riscv/atomic.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/libgcc/config/riscv/atomic.c b/libgcc/config/riscv/atomic.c
index 573d163ea04..bd2b033132b 100644
--- a/libgcc/config/riscv/atomic.c
+++ b/libgcc/config/riscv/atomic.c
@@ -41,7 +41,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If
not, see
unsigned old, tmp1, tmp2; \
\
asm volatile ("1:\n\t" \
- "lr.w.aq %[old], %[mem]\n\t" \
+ "lr.w.aqrl %[old], %[mem]\n\t" \
#insn " %[tmp1], %[old], %[value]\n\t" \
invert \
"and %[tmp1], %[tmp1], %[mask]\n\t" \
@@ -75,7 +75,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If
not, see
unsigned old, tmp1;
\
\
asm volatile ("1:\n\t" \
- "lr.w.aq %[old], %[mem]\n\t" \
+ "lr.w.aqrl %[old], %[mem]\n\t" \
"and %[tmp1], %[old], %[mask]\n\t" \
"bne %[tmp1], %[o], 1f\n\t" \
"and %[tmp1], %[old], %[not_mask]\n\t" \
--
2.34.1
