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m68k: Limit TAS to 68000 and CF ISA_B. 

From-SVN: r185011
This commit is contained in:
Richard Henderson 2012-03-06 10:20:34 -08:00 committed by Richard Henderson
parent 593f74bbab
commit 22a89c862f
3 changed files with 9 additions and 2 deletions
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6
gcc/ChangeLog
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@ -1,3 +1,9 @@
2012-03-06 Richard Henderson <rth@redhat.com>
* config/m68k/m68k.h (ISA_HAS_TAS): New.
* config/m68k/sync.md (atomic_test_and_set): Use it.
(atomic_test_and_set_1): Likewise.
2012-03-06 Michael Meissner <meissner@linux.vnet.ibm.com>
PR target/50310

1
gcc/config/m68k/m68k.h
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@ -249,6 +249,7 @@ along with GCC; see the file COPYING3. If not see
/* Some instructions are common to more than one ISA. */
#define ISA_HAS_MVS_MVZ (TARGET_ISAB || TARGET_ISAC)
#define ISA_HAS_FF1 (TARGET_ISAAPLUS || TARGET_ISAC)
#define ISA_HAS_TAS (!TARGET_COLDFIRE || TARGET_ISAB || TARGET_ISAC)
#define TUNE_68000 (m68k_tune == u68000)
#define TUNE_68010 (m68k_tune == u68010)

4
gcc/config/m68k/sync.md
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@ -60,7 +60,7 @@
[(match_operand:QI 0 "register_operand" "") ;; bool success output
(match_operand:QI 1 "memory_operand" "") ;; memory
(match_operand:SI 2 "const_int_operand" "")] ;; model
""
"ISA_HAS_TAS"
{
rtx t = gen_reg_rtx (QImode);
emit_insn (gen_atomic_test_and_set_1 (t, operands[1]));
@ -77,5 +77,5 @@
UNSPECV_TAS_1))
(set (match_dup 1)
(unspec_volatile:QI [(match_dup 1)] UNSPECV_TAS_2))]
""
"ISA_HAS_TAS"
"tas %1\;sne %0")