@@ -79,6 +79,8 @@ extern void riscv_reinit (void);
extern poly_uint64 riscv_regmode_natural_size (machine_mode);
extern bool riscv_v_ext_vector_mode_p (machine_mode);
extern bool riscv_shamt_matches_mask_p (int, HOST_WIDE_INT);
+extern void riscv_subword_address (rtx, rtx *, rtx *, rtx *, rtx *);
+extern void riscv_lshift_subword (machine_mode, rtx, rtx, rtx *);
/* Routines implemented in riscv-c.cc. */
void riscv_cpu_cpp_builtins (cpp_reader *);
@@ -7143,6 +7143,56 @@ riscv_zero_call_used_regs (HARD_REG_SET need_zeroed_hardregs)
& ~zeroed_hardregs);
}
+/* Helper function for extracting a subword from memory. */
+
+void
+riscv_subword_address (rtx mem, rtx *aligned_mem, rtx *shift, rtx *mask,
+ rtx *not_mask)
+{
+ /* Align the memory addess to a word. */
+ rtx addr = force_reg (Pmode, XEXP (mem, 0));
+
+ rtx aligned_addr = gen_reg_rtx (Pmode);
+ emit_move_insn (aligned_addr, gen_rtx_AND (Pmode, addr,
+ gen_int_mode (-4, Pmode)));
+
+ *aligned_mem = change_address (mem, SImode, aligned_addr);
+
+ /* Calculate the shift amount. */
+ emit_move_insn (*shift, gen_rtx_AND (SImode, gen_lowpart (SImode, addr),
+ gen_int_mode (3, SImode)));
+ emit_move_insn (*shift, gen_rtx_ASHIFT (SImode, *shift,
+ gen_int_mode(3, SImode)));
+
+ /* Calculate the mask. */
+ int unshifted_mask;
+ if (GET_MODE (mem) == QImode)
+ unshifted_mask = 0xFF;
+ else
+ unshifted_mask = 0xFFFF;
+
+ emit_move_insn (*mask, gen_int_mode(unshifted_mask, SImode));
+
+ emit_move_insn (*mask, gen_rtx_ASHIFT(SImode, *mask,
+ gen_lowpart (QImode, *shift)));
+
+ emit_move_insn (*not_mask, gen_rtx_NOT(SImode, *mask));
+}
+
+/* Leftshift a subword within an SImode register. */
+
+void
+riscv_lshift_subword (machine_mode mode, rtx value, rtx shift,
+ rtx *shifted_value)
+{
+ rtx value_reg = gen_reg_rtx (SImode);
+ emit_move_insn (value_reg, simplify_gen_subreg (SImode, value,
+ mode, 0));
+
+ emit_move_insn(*shifted_value, gen_rtx_ASHIFT(SImode, value_reg,
+ gen_lowpart (QImode, shift)));
+}
+
/* Initialize the GCC target structure. */
#undef TARGET_ASM_ALIGNED_HI_OP
#define TARGET_ASM_ALIGNED_HI_OP "\t.half\t"
@@ -254,3 +254,7 @@ Enum(isa_spec_class) String(20191213) Value(ISA_SPEC_CLASS_20191213)
misa-spec=
Target RejectNegative Joined Enum(isa_spec_class) Var(riscv_isa_spec) Init(TARGET_DEFAULT_ISA_SPEC)
Set the version of RISC-V ISA spec.
+
+minline-atomics
+Target Var(TARGET_INLINE_SUBWORD_ATOMIC) Init(1)
+Always inline subword atomic operations.
@@ -21,8 +21,11 @@
(define_c_enum "unspec" [
UNSPEC_COMPARE_AND_SWAP
+ UNSPEC_COMPARE_AND_SWAP_SUBWORD
UNSPEC_SYNC_OLD_OP
+ UNSPEC_SYNC_OLD_OP_SUBWORD
UNSPEC_SYNC_EXCHANGE
+ UNSPEC_SYNC_EXCHANGE_SUBWORD
UNSPEC_ATOMIC_STORE
UNSPEC_MEMORY_BARRIER
])
@@ -91,6 +94,143 @@
[(set_attr "type" "atomic")
(set (attr "length") (const_int 8))])
+(define_insn "subword_atomic_fetch_strong_<atomic_optab>"
+ [(set (match_operand:SI 0 "register_operand" "=&r") ;; old value at mem
+ (match_operand:SI 1 "memory_operand" "+A")) ;; mem location
+ (set (match_dup 1)
+ (unspec_volatile:SI
+ [(any_atomic:SI (match_dup 1)
+ (match_operand:SI 2 "register_operand" "rI")) ;; value for op
+ (match_operand:SI 3 "register_operand" "rI")] ;; mask
+ UNSPEC_SYNC_OLD_OP_SUBWORD))
+ (match_operand:SI 4 "register_operand" "rI") ;; not_mask
+ (clobber (match_scratch:SI 5 "=&r")) ;; tmp_1
+ (clobber (match_scratch:SI 6 "=&r"))] ;; tmp_2
+ "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC"
+ {
+ return "1:\;"
+ "lr.w.aq\t%0, %1\;"
+ "<insn>\t%5, %0, %2\;"
+ "and\t%5, %5, %3\;"
+ "and\t%6, %0, %4\;"
+ "or\t%6, %6, %5\;"
+ "sc.w.rl\t%5, %6, %1\;"
+ "bnez\t%5, 1b";
+ }
+ [(set (attr "length") (const_int 28))])
+
+(define_expand "atomic_fetch_nand<mode>"
+ [(set (match_operand:SHORT 0 "register_operand" "=&r")
+ (match_operand:SHORT 1 "memory_operand" "+A"))
+ (set (match_dup 1)
+ (unspec_volatile:SHORT
+ [(not:SHORT (and:SHORT (match_dup 1)
+ (match_operand:SHORT 2 "reg_or_0_operand" "rJ")))
+ (match_operand:SI 3 "const_int_operand")] ;; model
+ UNSPEC_SYNC_OLD_OP_SUBWORD))]
+ "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC"
+{
+ /* We have no QImode/HImode atomics, so form a mask, then use
+ subword_atomic_fetch_strong_nand to implement a LR/SC version of the
+ operation. */
+
+ /* Logic duplicated in gcc/libgcc/config/riscv/atomic.c for use when inlining
+ is disabled */
+
+ rtx old = gen_reg_rtx (SImode);
+ rtx mem = operands[1];
+ rtx value = operands[2];
+ rtx aligned_mem = gen_reg_rtx (SImode);
+ rtx shift = gen_reg_rtx (SImode);
+ rtx mask = gen_reg_rtx (SImode);
+ rtx not_mask = gen_reg_rtx (SImode);
+
+ riscv_subword_address (mem, &aligned_mem, &shift, &mask, ¬_mask);
+
+ rtx shifted_value = gen_reg_rtx (SImode);
+ riscv_lshift_subword (<MODE>mode, value, shift, &shifted_value);
+
+ emit_insn (gen_subword_atomic_fetch_strong_nand (old, aligned_mem,
+ shifted_value,
+ mask, not_mask));
+
+ emit_move_insn (old, gen_rtx_ASHIFTRT (SImode, old,
+ gen_lowpart (QImode, shift)));
+
+ emit_move_insn (operands[0], gen_lowpart (<MODE>mode, old));
+
+ DONE;
+})
+
+(define_insn "subword_atomic_fetch_strong_nand"
+ [(set (match_operand:SI 0 "register_operand" "=&r") ;; old value at mem
+ (match_operand:SI 1 "memory_operand" "+A")) ;; mem location
+ (set (match_dup 1)
+ (unspec_volatile:SI
+ [(not:SI (and:SI (match_dup 1)
+ (match_operand:SI 2 "register_operand" "rI"))) ;; value for op
+ (match_operand:SI 3 "register_operand" "rI")] ;; mask
+ UNSPEC_SYNC_OLD_OP_SUBWORD))
+ (match_operand:SI 4 "register_operand" "rI") ;; not_mask
+ (clobber (match_scratch:SI 5 "=&r")) ;; tmp_1
+ (clobber (match_scratch:SI 6 "=&r"))] ;; tmp_2
+ "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC"
+ {
+ return "1:\;"
+ "lr.w.aq\t%0, %1\;"
+ "and\t%5, %0, %2\;"
+ "not\t%5, %5\;"
+ "and\t%5, %5, %3\;"
+ "and\t%6, %0, %4\;"
+ "or\t%6, %6, %5\;"
+ "sc.w.rl\t%5, %6, %1\;"
+ "bnez\t%5, 1b";
+ }
+ [(set (attr "length") (const_int 32))])
+
+(define_expand "atomic_fetch_<atomic_optab><mode>"
+ [(set (match_operand:SHORT 0 "register_operand" "=&r") ;; old value at mem
+ (match_operand:SHORT 1 "memory_operand" "+A")) ;; mem location
+ (set (match_dup 1)
+ (unspec_volatile:SHORT
+ [(any_atomic:SHORT (match_dup 1)
+ (match_operand:SHORT 2 "reg_or_0_operand" "rJ")) ;; value for op
+ (match_operand:SI 3 "const_int_operand")] ;; model
+ UNSPEC_SYNC_OLD_OP_SUBWORD))]
+ "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC"
+{
+ /* We have no QImode/HImode atomics, so form a mask, then use
+ subword_atomic_fetch_strong_<mode> to implement a LR/SC version of the
+ operation. */
+
+ /* Logic duplicated in gcc/libgcc/config/riscv/atomic.c for use when inlining
+ is disabled */
+
+ rtx old = gen_reg_rtx (SImode);
+ rtx mem = operands[1];
+ rtx value = operands[2];
+ rtx aligned_mem = gen_reg_rtx (SImode);
+ rtx shift = gen_reg_rtx (SImode);
+ rtx mask = gen_reg_rtx (SImode);
+ rtx not_mask = gen_reg_rtx (SImode);
+
+ riscv_subword_address (mem, &aligned_mem, &shift, &mask, ¬_mask);
+
+ rtx shifted_value = gen_reg_rtx (SImode);
+ riscv_lshift_subword (<MODE>mode, value, shift, &shifted_value);
+
+ emit_insn (gen_subword_atomic_fetch_strong_<atomic_optab> (old, aligned_mem,
+ shifted_value,
+ mask, not_mask));
+
+ emit_move_insn (old, gen_rtx_ASHIFTRT (SImode, old,
+ gen_lowpart (QImode, shift)));
+
+ emit_move_insn (operands[0], gen_lowpart (<MODE>mode, old));
+
+ DONE;
+})
+
(define_insn "atomic_exchange<mode>"
[(set (match_operand:GPR 0 "register_operand" "=&r")
(unspec_volatile:GPR
@@ -104,6 +244,59 @@
[(set_attr "type" "atomic")
(set (attr "length") (const_int 8))])
+(define_expand "atomic_exchange<mode>"
+ [(set (match_operand:SHORT 0 "register_operand" "=&r")
+ (unspec_volatile:SHORT
+ [(match_operand:SHORT 1 "memory_operand" "+A")
+ (match_operand:SI 3 "const_int_operand")] ;; model
+ UNSPEC_SYNC_EXCHANGE_SUBWORD))
+ (set (match_dup 1)
+ (match_operand:SHORT 2 "register_operand" "0"))]
+ "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC"
+{
+ rtx old = gen_reg_rtx (SImode);
+ rtx mem = operands[1];
+ rtx value = operands[2];
+ rtx aligned_mem = gen_reg_rtx (SImode);
+ rtx shift = gen_reg_rtx (SImode);
+ rtx mask = gen_reg_rtx (SImode);
+ rtx not_mask = gen_reg_rtx (SImode);
+
+ riscv_subword_address (mem, &aligned_mem, &shift, &mask, ¬_mask);
+
+ rtx shifted_value = gen_reg_rtx (SImode);
+ riscv_lshift_subword (<MODE>mode, value, shift, &shifted_value);
+
+ emit_insn (gen_subword_atomic_exchange_strong (old, aligned_mem,
+ shifted_value, not_mask));
+
+ emit_move_insn (old, gen_rtx_ASHIFTRT (SImode, old,
+ gen_lowpart (QImode, shift)));
+
+ emit_move_insn (operands[0], gen_lowpart (<MODE>mode, old));
+ DONE;
+})
+
+(define_insn "subword_atomic_exchange_strong"
+ [(set (match_operand:SI 0 "register_operand" "=&r") ;; old value at mem
+ (match_operand:SI 1 "memory_operand" "+A")) ;; mem location
+ (set (match_dup 1)
+ (unspec_volatile:SI
+ [(match_operand:SI 2 "reg_or_0_operand" "rI") ;; value
+ (match_operand:SI 3 "reg_or_0_operand" "rI")] ;; not_mask
+ UNSPEC_SYNC_EXCHANGE_SUBWORD))
+ (clobber (match_scratch:SI 4 "=&r"))] ;; tmp_1
+ "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC"
+ {
+ return "1:\;"
+ "lr.w.aq\t%0, %1\;"
+ "and\t%4, %0, %3\;"
+ "or\t%4, %4, %2\;"
+ "sc.w.rl\t%4, %4, %1\;"
+ "bnez\t%4, 1b";
+ }
+ [(set (attr "length") (const_int 20))])
+
(define_insn "atomic_cas_value_strong<mode>"
[(set (match_operand:GPR 0 "register_operand" "=&r")
(match_operand:GPR 1 "memory_operand" "+A"))
@@ -153,6 +346,127 @@
DONE;
})
+(define_expand "atomic_compare_and_swap<mode>"
+ [(match_operand:SI 0 "register_operand" "") ;; bool output
+ (match_operand:SHORT 1 "register_operand" "") ;; val output
+ (match_operand:SHORT 2 "memory_operand" "") ;; memory
+ (match_operand:SHORT 3 "reg_or_0_operand" "") ;; expected value
+ (match_operand:SHORT 4 "reg_or_0_operand" "") ;; desired value
+ (match_operand:SI 5 "const_int_operand" "") ;; is_weak
+ (match_operand:SI 6 "const_int_operand" "") ;; mod_s
+ (match_operand:SI 7 "const_int_operand" "")] ;; mod_f
+ "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC"
+{
+ emit_insn (gen_atomic_cas_value_strong<mode> (operands[1], operands[2],
+ operands[3], operands[4],
+ operands[6], operands[7]));
+
+ rtx val = gen_reg_rtx (SImode);
+ if (operands[1] != const0_rtx)
+ emit_move_insn (val, gen_rtx_SIGN_EXTEND (SImode, operands[1]));
+ else
+ emit_move_insn (val, const0_rtx);
+
+ rtx exp = gen_reg_rtx (SImode);
+ if (operands[3] != const0_rtx)
+ emit_move_insn (exp, gen_rtx_SIGN_EXTEND (SImode, operands[3]));
+ else
+ emit_move_insn (exp, const0_rtx);
+
+ rtx compare = val;
+ if (exp != const0_rtx)
+ {
+ rtx difference = gen_rtx_MINUS (SImode, val, exp);
+ compare = gen_reg_rtx (SImode);
+ emit_move_insn (compare, difference);
+ }
+
+ if (word_mode != SImode)
+ {
+ rtx reg = gen_reg_rtx (word_mode);
+ emit_move_insn (reg, gen_rtx_SIGN_EXTEND (word_mode, compare));
+ compare = reg;
+ }
+
+ emit_move_insn (operands[0], gen_rtx_EQ (SImode, compare, const0_rtx));
+ DONE;
+})
+
+(define_expand "atomic_cas_value_strong<mode>"
+ [(set (match_operand:SHORT 0 "register_operand" "=&r") ;; val output
+ (match_operand:SHORT 1 "memory_operand" "+A")) ;; memory
+ (set (match_dup 1)
+ (unspec_volatile:SHORT [(match_operand:SHORT 2 "reg_or_0_operand" "rJ") ;; expected val
+ (match_operand:SHORT 3 "reg_or_0_operand" "rJ") ;; desired val
+ (match_operand:SI 4 "const_int_operand") ;; mod_s
+ (match_operand:SI 5 "const_int_operand")] ;; mod_f
+ UNSPEC_COMPARE_AND_SWAP_SUBWORD))
+ (clobber (match_scratch:SHORT 6 "=&r"))]
+ "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC"
+{
+ /* We have no QImode/HImode atomics, so form a mask, then use
+ subword_atomic_cas_strong<mode> to implement a LR/SC version of the
+ operation. */
+
+ /* Logic duplicated in gcc/libgcc/config/riscv/atomic.c for use when inlining
+ is disabled */
+
+ rtx old = gen_reg_rtx (SImode);
+ rtx mem = operands[1];
+ rtx aligned_mem = gen_reg_rtx (SImode);
+ rtx shift = gen_reg_rtx (SImode);
+ rtx mask = gen_reg_rtx (SImode);
+ rtx not_mask = gen_reg_rtx (SImode);
+
+ riscv_subword_address (mem, &aligned_mem, &shift, &mask, ¬_mask);
+
+ rtx o = operands[2];
+ rtx n = operands[3];
+ rtx shifted_o = gen_reg_rtx (SImode);
+ rtx shifted_n = gen_reg_rtx (SImode);
+
+ riscv_lshift_subword (<MODE>mode, o, shift, &shifted_o);
+ riscv_lshift_subword (<MODE>mode, n, shift, &shifted_n);
+
+ emit_move_insn (shifted_o, gen_rtx_AND (SImode, shifted_o, mask));
+ emit_move_insn (shifted_n, gen_rtx_AND (SImode, shifted_n, mask));
+
+ emit_insn (gen_subword_atomic_cas_strong (old, aligned_mem,
+ shifted_o, shifted_n,
+ mask, not_mask));
+
+ emit_move_insn (old, gen_rtx_ASHIFTRT (SImode, old,
+ gen_lowpart (QImode, shift)));
+
+ emit_move_insn (operands[0], gen_lowpart(<MODE>mode, old));
+
+ DONE;
+})
+
+(define_insn "subword_atomic_cas_strong"
+ [(set (match_operand:SI 0 "register_operand" "=&r") ;; old value at mem
+ (match_operand:SI 1 "memory_operand" "+A")) ;; mem location
+ (set (match_dup 1)
+ (unspec_volatile:SI [(match_operand:SI 2 "reg_or_0_operand" "rJ") ;; o
+ (match_operand:SI 3 "reg_or_0_operand" "rJ")] ;; n
+ UNSPEC_COMPARE_AND_SWAP_SUBWORD))
+ (match_operand:SI 4 "register_operand" "rI") ;; mask
+ (match_operand:SI 5 "register_operand" "rI") ;; not_mask
+ (clobber (match_scratch:SI 6 "=&r"))] ;; tmp_1
+ "TARGET_ATOMIC && TARGET_INLINE_SUBWORD_ATOMIC"
+ {
+ return "1:\;"
+ "lr.w.aq\t%0, %1\;"
+ "and\t%6, %0, %4\;"
+ "bne\t%6, %z2, 1f\;"
+ "and\t%6, %0, %5\;"
+ "or\t%6, %6, %3\;"
+ "sc.w.rl\t%6, %6, %1\;"
+ "bnez\t%6, 1b\;"
+ "1:";
+ }
+ [(set (attr "length") (const_int 28))])
+
(define_expand "atomic_test_and_set"
[(match_operand:QI 0 "register_operand" "") ;; bool output
(match_operand:QI 1 "memory_operand" "+A") ;; memory
@@ -1227,6 +1227,7 @@ See RS/6000 and PowerPC Options.
-mstack-protector-guard=@var{guard} -mstack-protector-guard-reg=@var{reg}
-mstack-protector-guard-offset=@var{offset}
-mcsr-check -mno-csr-check}
+-minline-atomics -mno-inline-atomics
@emph{RL78 Options}
@gccoptlist{-msim -mmul=none -mmul=g13 -mmul=g14 -mallregs
@@ -29006,6 +29007,13 @@ Do or don't use smaller but slower prologue and epilogue code that uses
library function calls. The default is to use fast inline prologues and
epilogues.
+@item -minline-atomics
+@itemx -mno-inline-atomics
+@opindex minline-atomics
+Do or don't use smaller but slower subword atomic emulation code that uses
+libatomic function calls. The default is to use fast inline subword atomics
+that do not require libatomic.
+
@opindex mshorten-memrefs
@item -mshorten-memrefs
@itemx -mno-shorten-memrefs
new file mode 100644
@@ -0,0 +1,18 @@
+/* { dg-do compile } */
+/* { dg-options "-mno-inline-atomics" } */
+/* { dg-message "note: '__sync_fetch_and_nand' changed semantics in GCC 4.4" "fetch_and_nand" { target *-*-* } 0 } */
+/* { dg-final { scan-assembler "\tcall\t__sync_fetch_and_add_1" } } */
+/* { dg-final { scan-assembler "\tcall\t__sync_fetch_and_nand_1" } } */
+/* { dg-final { scan-assembler "\tcall\t__sync_bool_compare_and_swap_1" } } */
+
+char foo;
+char bar;
+char baz;
+
+int
+main ()
+{
+ __sync_fetch_and_add(&foo, 1);
+ __sync_fetch_and_nand(&bar, 1);
+ __sync_bool_compare_and_swap (&baz, 1, 2);
+}
new file mode 100644
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* Verify that subword atomics do not generate calls. */
+/* { dg-options "-minline-atomics" } */
+/* { dg-message "note: '__sync_fetch_and_nand' changed semantics in GCC 4.4" "fetch_and_nand" { target *-*-* } 0 } */
+/* { dg-final { scan-assembler-not "\tcall\t__sync_fetch_and_add_1" } } */
+/* { dg-final { scan-assembler-not "\tcall\t__sync_fetch_and_nand_1" } } */
+/* { dg-final { scan-assembler-not "\tcall\t__sync_bool_compare_and_swap_1" } } */
+
+char foo;
+char bar;
+char baz;
+
+int
+main ()
+{
+ __sync_fetch_and_add(&foo, 1);
+ __sync_fetch_and_nand(&bar, 1);
+ __sync_bool_compare_and_swap (&baz, 1, 2);
+}
new file mode 100644
@@ -0,0 +1,569 @@
+/* Check all char alignments. */
+/* Duplicate logic as libatomic/testsuite/libatomic.c/atomic-op-1.c */
+/* Test __atomic routines for existence and proper execution on 1 byte
+ values with each valid memory model. */
+/* { dg-do run } */
+/* { dg-options "-minline-atomics -Wno-address-of-packed-member" } */
+
+/* Test the execution of the __atomic_*OP builtin routines for a char. */
+
+extern void abort(void);
+
+char count, res;
+const char init = ~0;
+
+struct A
+{
+ char a;
+ char b;
+ char c;
+ char d;
+} __attribute__ ((packed)) A;
+
+/* The fetch_op routines return the original value before the operation. */
+
+void
+test_fetch_add (char* v)
+{
+ *v = 0;
+ count = 1;
+
+ if (__atomic_fetch_add (v, count, __ATOMIC_RELAXED) != 0)
+ abort ();
+
+ if (__atomic_fetch_add (v, 1, __ATOMIC_CONSUME) != 1)
+ abort ();
+
+ if (__atomic_fetch_add (v, count, __ATOMIC_ACQUIRE) != 2)
+ abort ();
+
+ if (__atomic_fetch_add (v, 1, __ATOMIC_RELEASE) != 3)
+ abort ();
+
+ if (__atomic_fetch_add (v, count, __ATOMIC_ACQ_REL) != 4)
+ abort ();
+
+ if (__atomic_fetch_add (v, 1, __ATOMIC_SEQ_CST) != 5)
+ abort ();
+}
+
+
+void
+test_fetch_sub (char* v)
+{
+ *v = res = 20;
+ count = 0;
+
+ if (__atomic_fetch_sub (v, count + 1, __ATOMIC_RELAXED) != res--)
+ abort ();
+
+ if (__atomic_fetch_sub (v, 1, __ATOMIC_CONSUME) != res--)
+ abort ();
+
+ if (__atomic_fetch_sub (v, count + 1, __ATOMIC_ACQUIRE) != res--)
+ abort ();
+
+ if (__atomic_fetch_sub (v, 1, __ATOMIC_RELEASE) != res--)
+ abort ();
+
+ if (__atomic_fetch_sub (v, count + 1, __ATOMIC_ACQ_REL) != res--)
+ abort ();
+
+ if (__atomic_fetch_sub (v, 1, __ATOMIC_SEQ_CST) != res--)
+ abort ();
+}
+
+void
+test_fetch_and (char* v)
+{
+ *v = init;
+
+ if (__atomic_fetch_and (v, 0, __ATOMIC_RELAXED) != init)
+ abort ();
+
+ if (__atomic_fetch_and (v, init, __ATOMIC_CONSUME) != 0)
+ abort ();
+
+ if (__atomic_fetch_and (v, 0, __ATOMIC_ACQUIRE) != 0)
+ abort ();
+
+ *v = ~*v;
+ if (__atomic_fetch_and (v, init, __ATOMIC_RELEASE) != init)
+ abort ();
+
+ if (__atomic_fetch_and (v, 0, __ATOMIC_ACQ_REL) != init)
+ abort ();
+
+ if (__atomic_fetch_and (v, 0, __ATOMIC_SEQ_CST) != 0)
+ abort ();
+}
+
+void
+test_fetch_nand (char* v)
+{
+ *v = init;
+
+ if (__atomic_fetch_nand (v, 0, __ATOMIC_RELAXED) != init)
+ abort ();
+
+ if (__atomic_fetch_nand (v, init, __ATOMIC_CONSUME) != init)
+ abort ();
+
+ if (__atomic_fetch_nand (v, 0, __ATOMIC_ACQUIRE) != 0 )
+ abort ();
+
+ if (__atomic_fetch_nand (v, init, __ATOMIC_RELEASE) != init)
+ abort ();
+
+ if (__atomic_fetch_nand (v, init, __ATOMIC_ACQ_REL) != 0)
+ abort ();
+
+ if (__atomic_fetch_nand (v, 0, __ATOMIC_SEQ_CST) != init)
+ abort ();
+}
+
+void
+test_fetch_xor (char* v)
+{
+ *v = init;
+ count = 0;
+
+ if (__atomic_fetch_xor (v, count, __ATOMIC_RELAXED) != init)
+ abort ();
+
+ if (__atomic_fetch_xor (v, ~count, __ATOMIC_CONSUME) != init)
+ abort ();
+
+ if (__atomic_fetch_xor (v, 0, __ATOMIC_ACQUIRE) != 0)
+ abort ();
+
+ if (__atomic_fetch_xor (v, ~count, __ATOMIC_RELEASE) != 0)
+ abort ();
+
+ if (__atomic_fetch_xor (v, 0, __ATOMIC_ACQ_REL) != init)
+ abort ();
+
+ if (__atomic_fetch_xor (v, ~count, __ATOMIC_SEQ_CST) != init)
+ abort ();
+}
+
+void
+test_fetch_or (char* v)
+{
+ *v = 0;
+ count = 1;
+
+ if (__atomic_fetch_or (v, count, __ATOMIC_RELAXED) != 0)
+ abort ();
+
+ count *= 2;
+ if (__atomic_fetch_or (v, 2, __ATOMIC_CONSUME) != 1)
+ abort ();
+
+ count *= 2;
+ if (__atomic_fetch_or (v, count, __ATOMIC_ACQUIRE) != 3)
+ abort ();
+
+ count *= 2;
+ if (__atomic_fetch_or (v, 8, __ATOMIC_RELEASE) != 7)
+ abort ();
+
+ count *= 2;
+ if (__atomic_fetch_or (v, count, __ATOMIC_ACQ_REL) != 15)
+ abort ();
+
+ count *= 2;
+ if (__atomic_fetch_or (v, count, __ATOMIC_SEQ_CST) != 31)
+ abort ();
+}
+
+/* The OP_fetch routines return the new value after the operation. */
+
+void
+test_add_fetch (char* v)
+{
+ *v = 0;
+ count = 1;
+
+ if (__atomic_add_fetch (v, count, __ATOMIC_RELAXED) != 1)
+ abort ();
+
+ if (__atomic_add_fetch (v, 1, __ATOMIC_CONSUME) != 2)
+ abort ();
+
+ if (__atomic_add_fetch (v, count, __ATOMIC_ACQUIRE) != 3)
+ abort ();
+
+ if (__atomic_add_fetch (v, 1, __ATOMIC_RELEASE) != 4)
+ abort ();
+
+ if (__atomic_add_fetch (v, count, __ATOMIC_ACQ_REL) != 5)
+ abort ();
+
+ if (__atomic_add_fetch (v, count, __ATOMIC_SEQ_CST) != 6)
+ abort ();
+}
+
+
+void
+test_sub_fetch (char* v)
+{
+ *v = res = 20;
+ count = 0;
+
+ if (__atomic_sub_fetch (v, count + 1, __ATOMIC_RELAXED) != --res)
+ abort ();
+
+ if (__atomic_sub_fetch (v, 1, __ATOMIC_CONSUME) != --res)
+ abort ();
+
+ if (__atomic_sub_fetch (v, count + 1, __ATOMIC_ACQUIRE) != --res)
+ abort ();
+
+ if (__atomic_sub_fetch (v, 1, __ATOMIC_RELEASE) != --res)
+ abort ();
+
+ if (__atomic_sub_fetch (v, count + 1, __ATOMIC_ACQ_REL) != --res)
+ abort ();
+
+ if (__atomic_sub_fetch (v, count + 1, __ATOMIC_SEQ_CST) != --res)
+ abort ();
+}
+
+void
+test_and_fetch (char* v)
+{
+ *v = init;
+
+ if (__atomic_and_fetch (v, 0, __ATOMIC_RELAXED) != 0)
+ abort ();
+
+ *v = init;
+ if (__atomic_and_fetch (v, init, __ATOMIC_CONSUME) != init)
+ abort ();
+
+ if (__atomic_and_fetch (v, 0, __ATOMIC_ACQUIRE) != 0)
+ abort ();
+
+ *v = ~*v;
+ if (__atomic_and_fetch (v, init, __ATOMIC_RELEASE) != init)
+ abort ();
+
+ if (__atomic_and_fetch (v, 0, __ATOMIC_ACQ_REL) != 0)
+ abort ();
+
+ *v = ~*v;
+ if (__atomic_and_fetch (v, 0, __ATOMIC_SEQ_CST) != 0)
+ abort ();
+}
+
+void
+test_nand_fetch (char* v)
+{
+ *v = init;
+
+ if (__atomic_nand_fetch (v, 0, __ATOMIC_RELAXED) != init)
+ abort ();
+
+ if (__atomic_nand_fetch (v, init, __ATOMIC_CONSUME) != 0)
+ abort ();
+
+ if (__atomic_nand_fetch (v, 0, __ATOMIC_ACQUIRE) != init)
+ abort ();
+
+ if (__atomic_nand_fetch (v, init, __ATOMIC_RELEASE) != 0)
+ abort ();
+
+ if (__atomic_nand_fetch (v, init, __ATOMIC_ACQ_REL) != init)
+ abort ();
+
+ if (__atomic_nand_fetch (v, 0, __ATOMIC_SEQ_CST) != init)
+ abort ();
+}
+
+
+
+void
+test_xor_fetch (char* v)
+{
+ *v = init;
+ count = 0;
+
+ if (__atomic_xor_fetch (v, count, __ATOMIC_RELAXED) != init)
+ abort ();
+
+ if (__atomic_xor_fetch (v, ~count, __ATOMIC_CONSUME) != 0)
+ abort ();
+
+ if (__atomic_xor_fetch (v, 0, __ATOMIC_ACQUIRE) != 0)
+ abort ();
+
+ if (__atomic_xor_fetch (v, ~count, __ATOMIC_RELEASE) != init)
+ abort ();
+
+ if (__atomic_xor_fetch (v, 0, __ATOMIC_ACQ_REL) != init)
+ abort ();
+
+ if (__atomic_xor_fetch (v, ~count, __ATOMIC_SEQ_CST) != 0)
+ abort ();
+}
+
+void
+test_or_fetch (char* v)
+{
+ *v = 0;
+ count = 1;
+
+ if (__atomic_or_fetch (v, count, __ATOMIC_RELAXED) != 1)
+ abort ();
+
+ count *= 2;
+ if (__atomic_or_fetch (v, 2, __ATOMIC_CONSUME) != 3)
+ abort ();
+
+ count *= 2;
+ if (__atomic_or_fetch (v, count, __ATOMIC_ACQUIRE) != 7)
+ abort ();
+
+ count *= 2;
+ if (__atomic_or_fetch (v, 8, __ATOMIC_RELEASE) != 15)
+ abort ();
+
+ count *= 2;
+ if (__atomic_or_fetch (v, count, __ATOMIC_ACQ_REL) != 31)
+ abort ();
+
+ count *= 2;
+ if (__atomic_or_fetch (v, count, __ATOMIC_SEQ_CST) != 63)
+ abort ();
+}
+
+
+/* Test the OP routines with a result which isn't used. Use both variations
+ within each function. */
+
+void
+test_add (char* v)
+{
+ *v = 0;
+ count = 1;
+
+ __atomic_add_fetch (v, count, __ATOMIC_RELAXED);
+ if (*v != 1)
+ abort ();
+
+ __atomic_fetch_add (v, count, __ATOMIC_CONSUME);
+ if (*v != 2)
+ abort ();
+
+ __atomic_add_fetch (v, 1 , __ATOMIC_ACQUIRE);
+ if (*v != 3)
+ abort ();
+
+ __atomic_fetch_add (v, 1, __ATOMIC_RELEASE);
+ if (*v != 4)
+ abort ();
+
+ __atomic_add_fetch (v, count, __ATOMIC_ACQ_REL);
+ if (*v != 5)
+ abort ();
+
+ __atomic_fetch_add (v, count, __ATOMIC_SEQ_CST);
+ if (*v != 6)
+ abort ();
+}
+
+
+void
+test_sub (char* v)
+{
+ *v = res = 20;
+ count = 0;
+
+ __atomic_sub_fetch (v, count + 1, __ATOMIC_RELAXED);
+ if (*v != --res)
+ abort ();
+
+ __atomic_fetch_sub (v, count + 1, __ATOMIC_CONSUME);
+ if (*v != --res)
+ abort ();
+
+ __atomic_sub_fetch (v, 1, __ATOMIC_ACQUIRE);
+ if (*v != --res)
+ abort ();
+
+ __atomic_fetch_sub (v, 1, __ATOMIC_RELEASE);
+ if (*v != --res)
+ abort ();
+
+ __atomic_sub_fetch (v, count + 1, __ATOMIC_ACQ_REL);
+ if (*v != --res)
+ abort ();
+
+ __atomic_fetch_sub (v, count + 1, __ATOMIC_SEQ_CST);
+ if (*v != --res)
+ abort ();
+}
+
+void
+test_and (char* v)
+{
+ *v = init;
+
+ __atomic_and_fetch (v, 0, __ATOMIC_RELAXED);
+ if (*v != 0)
+ abort ();
+
+ *v = init;
+ __atomic_fetch_and (v, init, __ATOMIC_CONSUME);
+ if (*v != init)
+ abort ();
+
+ __atomic_and_fetch (v, 0, __ATOMIC_ACQUIRE);
+ if (*v != 0)
+ abort ();
+
+ *v = ~*v;
+ __atomic_fetch_and (v, init, __ATOMIC_RELEASE);
+ if (*v != init)
+ abort ();
+
+ __atomic_and_fetch (v, 0, __ATOMIC_ACQ_REL);
+ if (*v != 0)
+ abort ();
+
+ *v = ~*v;
+ __atomic_fetch_and (v, 0, __ATOMIC_SEQ_CST);
+ if (*v != 0)
+ abort ();
+}
+
+void
+test_nand (char* v)
+{
+ *v = init;
+
+ __atomic_fetch_nand (v, 0, __ATOMIC_RELAXED);
+ if (*v != init)
+ abort ();
+
+ __atomic_fetch_nand (v, init, __ATOMIC_CONSUME);
+ if (*v != 0)
+ abort ();
+
+ __atomic_nand_fetch (v, 0, __ATOMIC_ACQUIRE);
+ if (*v != init)
+ abort ();
+
+ __atomic_nand_fetch (v, init, __ATOMIC_RELEASE);
+ if (*v != 0)
+ abort ();
+
+ __atomic_fetch_nand (v, init, __ATOMIC_ACQ_REL);
+ if (*v != init)
+ abort ();
+
+ __atomic_nand_fetch (v, 0, __ATOMIC_SEQ_CST);
+ if (*v != init)
+ abort ();
+}
+
+
+
+void
+test_xor (char* v)
+{
+ *v = init;
+ count = 0;
+
+ __atomic_xor_fetch (v, count, __ATOMIC_RELAXED);
+ if (*v != init)
+ abort ();
+
+ __atomic_fetch_xor (v, ~count, __ATOMIC_CONSUME);
+ if (*v != 0)
+ abort ();
+
+ __atomic_xor_fetch (v, 0, __ATOMIC_ACQUIRE);
+ if (*v != 0)
+ abort ();
+
+ __atomic_fetch_xor (v, ~count, __ATOMIC_RELEASE);
+ if (*v != init)
+ abort ();
+
+ __atomic_fetch_xor (v, 0, __ATOMIC_ACQ_REL);
+ if (*v != init)
+ abort ();
+
+ __atomic_xor_fetch (v, ~count, __ATOMIC_SEQ_CST);
+ if (*v != 0)
+ abort ();
+}
+
+void
+test_or (char* v)
+{
+ *v = 0;
+ count = 1;
+
+ __atomic_or_fetch (v, count, __ATOMIC_RELAXED);
+ if (*v != 1)
+ abort ();
+
+ count *= 2;
+ __atomic_fetch_or (v, count, __ATOMIC_CONSUME);
+ if (*v != 3)
+ abort ();
+
+ count *= 2;
+ __atomic_or_fetch (v, 4, __ATOMIC_ACQUIRE);
+ if (*v != 7)
+ abort ();
+
+ count *= 2;
+ __atomic_fetch_or (v, 8, __ATOMIC_RELEASE);
+ if (*v != 15)
+ abort ();
+
+ count *= 2;
+ __atomic_or_fetch (v, count, __ATOMIC_ACQ_REL);
+ if (*v != 31)
+ abort ();
+
+ count *= 2;
+ __atomic_fetch_or (v, count, __ATOMIC_SEQ_CST);
+ if (*v != 63)
+ abort ();
+}
+
+int
+main ()
+{
+ char* V[] = {&A.a, &A.b, &A.c, &A.d};
+
+ for (int i = 0; i < 4; i++) {
+ test_fetch_add (V[i]);
+ test_fetch_sub (V[i]);
+ test_fetch_and (V[i]);
+ test_fetch_nand (V[i]);
+ test_fetch_xor (V[i]);
+ test_fetch_or (V[i]);
+
+ test_add_fetch (V[i]);
+ test_sub_fetch (V[i]);
+ test_and_fetch (V[i]);
+ test_nand_fetch (V[i]);
+ test_xor_fetch (V[i]);
+ test_or_fetch (V[i]);
+
+ test_add (V[i]);
+ test_sub (V[i]);
+ test_and (V[i]);
+ test_nand (V[i]);
+ test_xor (V[i]);
+ test_or (V[i]);
+ }
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,566 @@
+/* Check all short alignments. */
+/* Duplicate logic as libatomic/testsuite/libatomic.c/atomic-op-2.c */
+/* Test __atomic routines for existence and proper execution on 2 byte
+ values with each valid memory model. */
+/* { dg-do run } */
+/* { dg-options "-minline-atomics -Wno-address-of-packed-member" } */
+
+/* Test the execution of the __atomic_*OP builtin routines for a short. */
+
+extern void abort(void);
+
+short count, res;
+const short init = ~0;
+
+struct A
+{
+ short a;
+ short b;
+} __attribute__ ((packed)) A;
+
+/* The fetch_op routines return the original value before the operation. */
+
+void
+test_fetch_add (short* v)
+{
+ *v = 0;
+ count = 1;
+
+ if (__atomic_fetch_add (v, count, __ATOMIC_RELAXED) != 0)
+ abort ();
+
+ if (__atomic_fetch_add (v, 1, __ATOMIC_CONSUME) != 1)
+ abort ();
+
+ if (__atomic_fetch_add (v, count, __ATOMIC_ACQUIRE) != 2)
+ abort ();
+
+ if (__atomic_fetch_add (v, 1, __ATOMIC_RELEASE) != 3)
+ abort ();
+
+ if (__atomic_fetch_add (v, count, __ATOMIC_ACQ_REL) != 4)
+ abort ();
+
+ if (__atomic_fetch_add (v, 1, __ATOMIC_SEQ_CST) != 5)
+ abort ();
+}
+
+
+void
+test_fetch_sub (short* v)
+{
+ *v = res = 20;
+ count = 0;
+
+ if (__atomic_fetch_sub (v, count + 1, __ATOMIC_RELAXED) != res--)
+ abort ();
+
+ if (__atomic_fetch_sub (v, 1, __ATOMIC_CONSUME) != res--)
+ abort ();
+
+ if (__atomic_fetch_sub (v, count + 1, __ATOMIC_ACQUIRE) != res--)
+ abort ();
+
+ if (__atomic_fetch_sub (v, 1, __ATOMIC_RELEASE) != res--)
+ abort ();
+
+ if (__atomic_fetch_sub (v, count + 1, __ATOMIC_ACQ_REL) != res--)
+ abort ();
+
+ if (__atomic_fetch_sub (v, 1, __ATOMIC_SEQ_CST) != res--)
+ abort ();
+}
+
+void
+test_fetch_and (short* v)
+{
+ *v = init;
+
+ if (__atomic_fetch_and (v, 0, __ATOMIC_RELAXED) != init)
+ abort ();
+
+ if (__atomic_fetch_and (v, init, __ATOMIC_CONSUME) != 0)
+ abort ();
+
+ if (__atomic_fetch_and (v, 0, __ATOMIC_ACQUIRE) != 0)
+ abort ();
+
+ *v = ~*v;
+ if (__atomic_fetch_and (v, init, __ATOMIC_RELEASE) != init)
+ abort ();
+
+ if (__atomic_fetch_and (v, 0, __ATOMIC_ACQ_REL) != init)
+ abort ();
+
+ if (__atomic_fetch_and (v, 0, __ATOMIC_SEQ_CST) != 0)
+ abort ();
+}
+
+void
+test_fetch_nand (short* v)
+{
+ *v = init;
+
+ if (__atomic_fetch_nand (v, 0, __ATOMIC_RELAXED) != init)
+ abort ();
+
+ if (__atomic_fetch_nand (v, init, __ATOMIC_CONSUME) != init)
+ abort ();
+
+ if (__atomic_fetch_nand (v, 0, __ATOMIC_ACQUIRE) != 0 )
+ abort ();
+
+ if (__atomic_fetch_nand (v, init, __ATOMIC_RELEASE) != init)
+ abort ();
+
+ if (__atomic_fetch_nand (v, init, __ATOMIC_ACQ_REL) != 0)
+ abort ();
+
+ if (__atomic_fetch_nand (v, 0, __ATOMIC_SEQ_CST) != init)
+ abort ();
+}
+
+void
+test_fetch_xor (short* v)
+{
+ *v = init;
+ count = 0;
+
+ if (__atomic_fetch_xor (v, count, __ATOMIC_RELAXED) != init)
+ abort ();
+
+ if (__atomic_fetch_xor (v, ~count, __ATOMIC_CONSUME) != init)
+ abort ();
+
+ if (__atomic_fetch_xor (v, 0, __ATOMIC_ACQUIRE) != 0)
+ abort ();
+
+ if (__atomic_fetch_xor (v, ~count, __ATOMIC_RELEASE) != 0)
+ abort ();
+
+ if (__atomic_fetch_xor (v, 0, __ATOMIC_ACQ_REL) != init)
+ abort ();
+
+ if (__atomic_fetch_xor (v, ~count, __ATOMIC_SEQ_CST) != init)
+ abort ();
+}
+
+void
+test_fetch_or (short* v)
+{
+ *v = 0;
+ count = 1;
+
+ if (__atomic_fetch_or (v, count, __ATOMIC_RELAXED) != 0)
+ abort ();
+
+ count *= 2;
+ if (__atomic_fetch_or (v, 2, __ATOMIC_CONSUME) != 1)
+ abort ();
+
+ count *= 2;
+ if (__atomic_fetch_or (v, count, __ATOMIC_ACQUIRE) != 3)
+ abort ();
+
+ count *= 2;
+ if (__atomic_fetch_or (v, 8, __ATOMIC_RELEASE) != 7)
+ abort ();
+
+ count *= 2;
+ if (__atomic_fetch_or (v, count, __ATOMIC_ACQ_REL) != 15)
+ abort ();
+
+ count *= 2;
+ if (__atomic_fetch_or (v, count, __ATOMIC_SEQ_CST) != 31)
+ abort ();
+}
+
+/* The OP_fetch routines return the new value after the operation. */
+
+void
+test_add_fetch (short* v)
+{
+ *v = 0;
+ count = 1;
+
+ if (__atomic_add_fetch (v, count, __ATOMIC_RELAXED) != 1)
+ abort ();
+
+ if (__atomic_add_fetch (v, 1, __ATOMIC_CONSUME) != 2)
+ abort ();
+
+ if (__atomic_add_fetch (v, count, __ATOMIC_ACQUIRE) != 3)
+ abort ();
+
+ if (__atomic_add_fetch (v, 1, __ATOMIC_RELEASE) != 4)
+ abort ();
+
+ if (__atomic_add_fetch (v, count, __ATOMIC_ACQ_REL) != 5)
+ abort ();
+
+ if (__atomic_add_fetch (v, count, __ATOMIC_SEQ_CST) != 6)
+ abort ();
+}
+
+
+void
+test_sub_fetch (short* v)
+{
+ *v = res = 20;
+ count = 0;
+
+ if (__atomic_sub_fetch (v, count + 1, __ATOMIC_RELAXED) != --res)
+ abort ();
+
+ if (__atomic_sub_fetch (v, 1, __ATOMIC_CONSUME) != --res)
+ abort ();
+
+ if (__atomic_sub_fetch (v, count + 1, __ATOMIC_ACQUIRE) != --res)
+ abort ();
+
+ if (__atomic_sub_fetch (v, 1, __ATOMIC_RELEASE) != --res)
+ abort ();
+
+ if (__atomic_sub_fetch (v, count + 1, __ATOMIC_ACQ_REL) != --res)
+ abort ();
+
+ if (__atomic_sub_fetch (v, count + 1, __ATOMIC_SEQ_CST) != --res)
+ abort ();
+}
+
+void
+test_and_fetch (short* v)
+{
+ *v = init;
+
+ if (__atomic_and_fetch (v, 0, __ATOMIC_RELAXED) != 0)
+ abort ();
+
+ *v = init;
+ if (__atomic_and_fetch (v, init, __ATOMIC_CONSUME) != init)
+ abort ();
+
+ if (__atomic_and_fetch (v, 0, __ATOMIC_ACQUIRE) != 0)
+ abort ();
+
+ *v = ~*v;
+ if (__atomic_and_fetch (v, init, __ATOMIC_RELEASE) != init)
+ abort ();
+
+ if (__atomic_and_fetch (v, 0, __ATOMIC_ACQ_REL) != 0)
+ abort ();
+
+ *v = ~*v;
+ if (__atomic_and_fetch (v, 0, __ATOMIC_SEQ_CST) != 0)
+ abort ();
+}
+
+void
+test_nand_fetch (short* v)
+{
+ *v = init;
+
+ if (__atomic_nand_fetch (v, 0, __ATOMIC_RELAXED) != init)
+ abort ();
+
+ if (__atomic_nand_fetch (v, init, __ATOMIC_CONSUME) != 0)
+ abort ();
+
+ if (__atomic_nand_fetch (v, 0, __ATOMIC_ACQUIRE) != init)
+ abort ();
+
+ if (__atomic_nand_fetch (v, init, __ATOMIC_RELEASE) != 0)
+ abort ();
+
+ if (__atomic_nand_fetch (v, init, __ATOMIC_ACQ_REL) != init)
+ abort ();
+
+ if (__atomic_nand_fetch (v, 0, __ATOMIC_SEQ_CST) != init)
+ abort ();
+}
+
+
+
+void
+test_xor_fetch (short* v)
+{
+ *v = init;
+ count = 0;
+
+ if (__atomic_xor_fetch (v, count, __ATOMIC_RELAXED) != init)
+ abort ();
+
+ if (__atomic_xor_fetch (v, ~count, __ATOMIC_CONSUME) != 0)
+ abort ();
+
+ if (__atomic_xor_fetch (v, 0, __ATOMIC_ACQUIRE) != 0)
+ abort ();
+
+ if (__atomic_xor_fetch (v, ~count, __ATOMIC_RELEASE) != init)
+ abort ();
+
+ if (__atomic_xor_fetch (v, 0, __ATOMIC_ACQ_REL) != init)
+ abort ();
+
+ if (__atomic_xor_fetch (v, ~count, __ATOMIC_SEQ_CST) != 0)
+ abort ();
+}
+
+void
+test_or_fetch (short* v)
+{
+ *v = 0;
+ count = 1;
+
+ if (__atomic_or_fetch (v, count, __ATOMIC_RELAXED) != 1)
+ abort ();
+
+ count *= 2;
+ if (__atomic_or_fetch (v, 2, __ATOMIC_CONSUME) != 3)
+ abort ();
+
+ count *= 2;
+ if (__atomic_or_fetch (v, count, __ATOMIC_ACQUIRE) != 7)
+ abort ();
+
+ count *= 2;
+ if (__atomic_or_fetch (v, 8, __ATOMIC_RELEASE) != 15)
+ abort ();
+
+ count *= 2;
+ if (__atomic_or_fetch (v, count, __ATOMIC_ACQ_REL) != 31)
+ abort ();
+
+ count *= 2;
+ if (__atomic_or_fetch (v, count, __ATOMIC_SEQ_CST) != 63)
+ abort ();
+}
+
+
+/* Test the OP routines with a result which isn't used. Use both variations
+ within each function. */
+
+void
+test_add (short* v)
+{
+ *v = 0;
+ count = 1;
+
+ __atomic_add_fetch (v, count, __ATOMIC_RELAXED);
+ if (*v != 1)
+ abort ();
+
+ __atomic_fetch_add (v, count, __ATOMIC_CONSUME);
+ if (*v != 2)
+ abort ();
+
+ __atomic_add_fetch (v, 1 , __ATOMIC_ACQUIRE);
+ if (*v != 3)
+ abort ();
+
+ __atomic_fetch_add (v, 1, __ATOMIC_RELEASE);
+ if (*v != 4)
+ abort ();
+
+ __atomic_add_fetch (v, count, __ATOMIC_ACQ_REL);
+ if (*v != 5)
+ abort ();
+
+ __atomic_fetch_add (v, count, __ATOMIC_SEQ_CST);
+ if (*v != 6)
+ abort ();
+}
+
+
+void
+test_sub (short* v)
+{
+ *v = res = 20;
+ count = 0;
+
+ __atomic_sub_fetch (v, count + 1, __ATOMIC_RELAXED);
+ if (*v != --res)
+ abort ();
+
+ __atomic_fetch_sub (v, count + 1, __ATOMIC_CONSUME);
+ if (*v != --res)
+ abort ();
+
+ __atomic_sub_fetch (v, 1, __ATOMIC_ACQUIRE);
+ if (*v != --res)
+ abort ();
+
+ __atomic_fetch_sub (v, 1, __ATOMIC_RELEASE);
+ if (*v != --res)
+ abort ();
+
+ __atomic_sub_fetch (v, count + 1, __ATOMIC_ACQ_REL);
+ if (*v != --res)
+ abort ();
+
+ __atomic_fetch_sub (v, count + 1, __ATOMIC_SEQ_CST);
+ if (*v != --res)
+ abort ();
+}
+
+void
+test_and (short* v)
+{
+ *v = init;
+
+ __atomic_and_fetch (v, 0, __ATOMIC_RELAXED);
+ if (*v != 0)
+ abort ();
+
+ *v = init;
+ __atomic_fetch_and (v, init, __ATOMIC_CONSUME);
+ if (*v != init)
+ abort ();
+
+ __atomic_and_fetch (v, 0, __ATOMIC_ACQUIRE);
+ if (*v != 0)
+ abort ();
+
+ *v = ~*v;
+ __atomic_fetch_and (v, init, __ATOMIC_RELEASE);
+ if (*v != init)
+ abort ();
+
+ __atomic_and_fetch (v, 0, __ATOMIC_ACQ_REL);
+ if (*v != 0)
+ abort ();
+
+ *v = ~*v;
+ __atomic_fetch_and (v, 0, __ATOMIC_SEQ_CST);
+ if (*v != 0)
+ abort ();
+}
+
+void
+test_nand (short* v)
+{
+ *v = init;
+
+ __atomic_fetch_nand (v, 0, __ATOMIC_RELAXED);
+ if (*v != init)
+ abort ();
+
+ __atomic_fetch_nand (v, init, __ATOMIC_CONSUME);
+ if (*v != 0)
+ abort ();
+
+ __atomic_nand_fetch (v, 0, __ATOMIC_ACQUIRE);
+ if (*v != init)
+ abort ();
+
+ __atomic_nand_fetch (v, init, __ATOMIC_RELEASE);
+ if (*v != 0)
+ abort ();
+
+ __atomic_fetch_nand (v, init, __ATOMIC_ACQ_REL);
+ if (*v != init)
+ abort ();
+
+ __atomic_nand_fetch (v, 0, __ATOMIC_SEQ_CST);
+ if (*v != init)
+ abort ();
+}
+
+
+
+void
+test_xor (short* v)
+{
+ *v = init;
+ count = 0;
+
+ __atomic_xor_fetch (v, count, __ATOMIC_RELAXED);
+ if (*v != init)
+ abort ();
+
+ __atomic_fetch_xor (v, ~count, __ATOMIC_CONSUME);
+ if (*v != 0)
+ abort ();
+
+ __atomic_xor_fetch (v, 0, __ATOMIC_ACQUIRE);
+ if (*v != 0)
+ abort ();
+
+ __atomic_fetch_xor (v, ~count, __ATOMIC_RELEASE);
+ if (*v != init)
+ abort ();
+
+ __atomic_fetch_xor (v, 0, __ATOMIC_ACQ_REL);
+ if (*v != init)
+ abort ();
+
+ __atomic_xor_fetch (v, ~count, __ATOMIC_SEQ_CST);
+ if (*v != 0)
+ abort ();
+}
+
+void
+test_or (short* v)
+{
+ *v = 0;
+ count = 1;
+
+ __atomic_or_fetch (v, count, __ATOMIC_RELAXED);
+ if (*v != 1)
+ abort ();
+
+ count *= 2;
+ __atomic_fetch_or (v, count, __ATOMIC_CONSUME);
+ if (*v != 3)
+ abort ();
+
+ count *= 2;
+ __atomic_or_fetch (v, 4, __ATOMIC_ACQUIRE);
+ if (*v != 7)
+ abort ();
+
+ count *= 2;
+ __atomic_fetch_or (v, 8, __ATOMIC_RELEASE);
+ if (*v != 15)
+ abort ();
+
+ count *= 2;
+ __atomic_or_fetch (v, count, __ATOMIC_ACQ_REL);
+ if (*v != 31)
+ abort ();
+
+ count *= 2;
+ __atomic_fetch_or (v, count, __ATOMIC_SEQ_CST);
+ if (*v != 63)
+ abort ();
+}
+
+int
+main () {
+ short* V[] = {&A.a, &A.b};
+
+ for (int i = 0; i < 2; i++) {
+ test_fetch_add (V[i]);
+ test_fetch_sub (V[i]);
+ test_fetch_and (V[i]);
+ test_fetch_nand (V[i]);
+ test_fetch_xor (V[i]);
+ test_fetch_or (V[i]);
+
+ test_add_fetch (V[i]);
+ test_sub_fetch (V[i]);
+ test_and_fetch (V[i]);
+ test_nand_fetch (V[i]);
+ test_xor_fetch (V[i]);
+ test_or_fetch (V[i]);
+
+ test_add (V[i]);
+ test_sub (V[i]);
+ test_and (V[i]);
+ test_nand (V[i]);
+ test_xor (V[i]);
+ test_or (V[i]);
+ }
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,87 @@
+/* Test __atomic routines for existence and proper execution on 1 byte
+ values with each valid memory model. */
+/* Duplicate logic as libatomic/testsuite/libatomic.c/atomic-compare-exchange-1.c */
+/* { dg-do run } */
+/* { dg-options "-minline-atomics" } */
+
+/* Test the execution of the __atomic_compare_exchange_n builtin for a char. */
+
+extern void abort(void);
+
+char v = 0;
+char expected = 0;
+char max = ~0;
+char desired = ~0;
+char zero = 0;
+
+#define STRONG 0
+#define WEAK 1
+
+int
+main ()
+{
+
+ if (!__atomic_compare_exchange_n (&v, &expected, max, STRONG , __ATOMIC_RELAXED, __ATOMIC_RELAXED))
+ abort ();
+ if (expected != 0)
+ abort ();
+
+ if (__atomic_compare_exchange_n (&v, &expected, 0, STRONG , __ATOMIC_ACQUIRE, __ATOMIC_RELAXED))
+ abort ();
+ if (expected != max)
+ abort ();
+
+ if (!__atomic_compare_exchange_n (&v, &expected, 0, STRONG , __ATOMIC_RELEASE, __ATOMIC_ACQUIRE))
+ abort ();
+ if (expected != max)
+ abort ();
+ if (v != 0)
+ abort ();
+
+ if (__atomic_compare_exchange_n (&v, &expected, desired, WEAK, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE))
+ abort ();
+ if (expected != 0)
+ abort ();
+
+ if (!__atomic_compare_exchange_n (&v, &expected, desired, STRONG , __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST))
+ abort ();
+ if (expected != 0)
+ abort ();
+ if (v != max)
+ abort ();
+
+ /* Now test the generic version. */
+
+ v = 0;
+
+ if (!__atomic_compare_exchange (&v, &expected, &max, STRONG, __ATOMIC_RELAXED, __ATOMIC_RELAXED))
+ abort ();
+ if (expected != 0)
+ abort ();
+
+ if (__atomic_compare_exchange (&v, &expected, &zero, STRONG , __ATOMIC_ACQUIRE, __ATOMIC_RELAXED))
+ abort ();
+ if (expected != max)
+ abort ();
+
+ if (!__atomic_compare_exchange (&v, &expected, &zero, STRONG , __ATOMIC_RELEASE, __ATOMIC_ACQUIRE))
+ abort ();
+ if (expected != max)
+ abort ();
+ if (v != 0)
+ abort ();
+
+ if (__atomic_compare_exchange (&v, &expected, &desired, WEAK, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE))
+ abort ();
+ if (expected != 0)
+ abort ();
+
+ if (!__atomic_compare_exchange (&v, &expected, &desired, STRONG , __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST))
+ abort ();
+ if (expected != 0)
+ abort ();
+ if (v != max)
+ abort ();
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,87 @@
+/* Test __atomic routines for existence and proper execution on 2 byte
+ values with each valid memory model. */
+/* Duplicate logic as libatomic/testsuite/libatomic.c/atomic-compare-exchange-2.c */
+/* { dg-do run } */
+/* { dg-options "-minline-atomics" } */
+
+/* Test the execution of the __atomic_compare_exchange_n builtin for a short. */
+
+extern void abort(void);
+
+short v = 0;
+short expected = 0;
+short max = ~0;
+short desired = ~0;
+short zero = 0;
+
+#define STRONG 0
+#define WEAK 1
+
+int
+main ()
+{
+
+ if (!__atomic_compare_exchange_n (&v, &expected, max, STRONG , __ATOMIC_RELAXED, __ATOMIC_RELAXED))
+ abort ();
+ if (expected != 0)
+ abort ();
+
+ if (__atomic_compare_exchange_n (&v, &expected, 0, STRONG , __ATOMIC_ACQUIRE, __ATOMIC_RELAXED))
+ abort ();
+ if (expected != max)
+ abort ();
+
+ if (!__atomic_compare_exchange_n (&v, &expected, 0, STRONG , __ATOMIC_RELEASE, __ATOMIC_ACQUIRE))
+ abort ();
+ if (expected != max)
+ abort ();
+ if (v != 0)
+ abort ();
+
+ if (__atomic_compare_exchange_n (&v, &expected, desired, WEAK, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE))
+ abort ();
+ if (expected != 0)
+ abort ();
+
+ if (!__atomic_compare_exchange_n (&v, &expected, desired, STRONG , __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST))
+ abort ();
+ if (expected != 0)
+ abort ();
+ if (v != max)
+ abort ();
+
+ /* Now test the generic version. */
+
+ v = 0;
+
+ if (!__atomic_compare_exchange (&v, &expected, &max, STRONG, __ATOMIC_RELAXED, __ATOMIC_RELAXED))
+ abort ();
+ if (expected != 0)
+ abort ();
+
+ if (__atomic_compare_exchange (&v, &expected, &zero, STRONG , __ATOMIC_ACQUIRE, __ATOMIC_RELAXED))
+ abort ();
+ if (expected != max)
+ abort ();
+
+ if (!__atomic_compare_exchange (&v, &expected, &zero, STRONG , __ATOMIC_RELEASE, __ATOMIC_ACQUIRE))
+ abort ();
+ if (expected != max)
+ abort ();
+ if (v != 0)
+ abort ();
+
+ if (__atomic_compare_exchange (&v, &expected, &desired, WEAK, __ATOMIC_ACQ_REL, __ATOMIC_ACQUIRE))
+ abort ();
+ if (expected != 0)
+ abort ();
+
+ if (!__atomic_compare_exchange (&v, &expected, &desired, STRONG , __ATOMIC_SEQ_CST, __ATOMIC_SEQ_CST))
+ abort ();
+ if (expected != 0)
+ abort ();
+ if (v != max)
+ abort ();
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,69 @@
+/* Test __atomic routines for existence and proper execution on 1 byte
+ values with each valid memory model. */
+/* Duplicate logic as libatomic/testsuite/libatomic.c/atomic-exchange-1.c */
+/* { dg-do run } */
+/* { dg-options "-minline-atomics" } */
+
+/* Test the execution of the __atomic_exchange_n builtin for a char. */
+
+extern void abort(void);
+
+char v, count, ret;
+
+int
+main ()
+{
+ v = 0;
+ count = 0;
+
+ if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELAXED) != count)
+ abort ();
+ count++;
+
+ if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQUIRE) != count)
+ abort ();
+ count++;
+
+ if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELEASE) != count)
+ abort ();
+ count++;
+
+ if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQ_REL) != count)
+ abort ();
+ count++;
+
+ if (__atomic_exchange_n (&v, count + 1, __ATOMIC_SEQ_CST) != count)
+ abort ();
+ count++;
+
+ /* Now test the generic version. */
+
+ count++;
+
+ __atomic_exchange (&v, &count, &ret, __ATOMIC_RELAXED);
+ if (ret != count - 1 || v != count)
+ abort ();
+ count++;
+
+ __atomic_exchange (&v, &count, &ret, __ATOMIC_ACQUIRE);
+ if (ret != count - 1 || v != count)
+ abort ();
+ count++;
+
+ __atomic_exchange (&v, &count, &ret, __ATOMIC_RELEASE);
+ if (ret != count - 1 || v != count)
+ abort ();
+ count++;
+
+ __atomic_exchange (&v, &count, &ret, __ATOMIC_ACQ_REL);
+ if (ret != count - 1 || v != count)
+ abort ();
+ count++;
+
+ __atomic_exchange (&v, &count, &ret, __ATOMIC_SEQ_CST);
+ if (ret != count - 1 || v != count)
+ abort ();
+ count++;
+
+ return 0;
+}
new file mode 100644
@@ -0,0 +1,69 @@
+/* Test __atomic routines for existence and proper execution on 2 byte
+ values with each valid memory model. */
+/* Duplicate logic as libatomic/testsuite/libatomic.c/atomic-exchange-2.c */
+/* { dg-do run } */
+/* { dg-options "-minline-atomics" } */
+
+/* Test the execution of the __atomic_X builtin for a short. */
+
+extern void abort(void);
+
+short v, count, ret;
+
+int
+main ()
+{
+ v = 0;
+ count = 0;
+
+ if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELAXED) != count)
+ abort ();
+ count++;
+
+ if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQUIRE) != count)
+ abort ();
+ count++;
+
+ if (__atomic_exchange_n (&v, count + 1, __ATOMIC_RELEASE) != count)
+ abort ();
+ count++;
+
+ if (__atomic_exchange_n (&v, count + 1, __ATOMIC_ACQ_REL) != count)
+ abort ();
+ count++;
+
+ if (__atomic_exchange_n (&v, count + 1, __ATOMIC_SEQ_CST) != count)
+ abort ();
+ count++;
+
+ /* Now test the generic version. */
+
+ count++;
+
+ __atomic_exchange (&v, &count, &ret, __ATOMIC_RELAXED);
+ if (ret != count - 1 || v != count)
+ abort ();
+ count++;
+
+ __atomic_exchange (&v, &count, &ret, __ATOMIC_ACQUIRE);
+ if (ret != count - 1 || v != count)
+ abort ();
+ count++;
+
+ __atomic_exchange (&v, &count, &ret, __ATOMIC_RELEASE);
+ if (ret != count - 1 || v != count)
+ abort ();
+ count++;
+
+ __atomic_exchange (&v, &count, &ret, __ATOMIC_ACQ_REL);
+ if (ret != count - 1 || v != count)
+ abort ();
+ count++;
+
+ __atomic_exchange (&v, &count, &ret, __ATOMIC_SEQ_CST);
+ if (ret != count - 1 || v != count)
+ abort ();
+ count++;
+
+ return 0;
+}
@@ -30,6 +30,8 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
#define INVERT "not %[tmp1], %[tmp1]\n\t"
#define DONT_INVERT ""
+/* Logic duplicated in gcc/gcc/config/riscv/sync.md for use when inlining is enabled */
+
#define GENERATE_FETCH_AND_OP(type, size, opname, insn, invert, cop) \
type __sync_fetch_and_ ## opname ## _ ## size (type *p, type v) \
{ \