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- From 6765eecde2ed8d4be0fc217408b9e9b92a840aff Mon Sep 17 00:00:00 2001
- From: Max Filippov <jcmvbkbc@gmail.com>
- Date: Tue, 4 Sep 2018 00:39:32 -0700
- Subject: [PATCH] gcc: xtensa: fix NAND code in xtensa_expand_atomic
- NAND is ~(a1 & a2), but xtensa_expand_atomic does ~a1 & a2.
- That fixes libatomic tests atomic-op-{1,2}.
- gcc/
- 2018-09-04 Max Filippov <jcmvbkbc@gmail.com>
- * config/xtensa/xtensa.c (xtensa_expand_atomic): Reorder AND and
- XOR operations in NAND case.
- Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
- Backported from: r264087
- ---
- gcc/config/xtensa/xtensa.c | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
- diff --git a/gcc/config/xtensa/xtensa.c b/gcc/config/xtensa/xtensa.c
- index 7cfe64d42895..080bb4ad765d 100644
- --- a/gcc/config/xtensa/xtensa.c
- +++ b/gcc/config/xtensa/xtensa.c
- @@ -1614,9 +1614,9 @@ xtensa_expand_atomic (enum rtx_code code, rtx target, rtx mem, rtx val,
- break;
-
- case MULT: /* NAND */
- - tmp = expand_simple_binop (SImode, XOR, old, ac.modemask,
- + tmp = expand_simple_binop (SImode, AND, old, val,
- NULL_RTX, 1, OPTAB_DIRECT);
- - tmp = expand_simple_binop (SImode, AND, tmp, val,
- + tmp = expand_simple_binop (SImode, XOR, tmp, ac.modemask,
- new_rtx, 1, OPTAB_DIRECT);
- break;
-
- --
- 2.11.0
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