From 22a89c862f73f2d36543d0fb156863c8b96af04b Mon Sep 17 00:00:00 2001 From: Richard Henderson Date: Tue, 6 Mar 2012 10:20:34 -0800 Subject: [PATCH] m68k: Limit TAS to 68000 and CF ISA_B. From-SVN: r185011 --- gcc/ChangeLog | 6 ++++++ gcc/config/m68k/m68k.h | 1 + gcc/config/m68k/sync.md | 4 ++-- 3 files changed, 9 insertions(+), 2 deletions(-) diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6f5d9cbfd5d..aee953e0484 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,9 @@ +2012-03-06 Richard Henderson + + * 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 PR target/50310 diff --git a/gcc/config/m68k/m68k.h b/gcc/config/m68k/m68k.h index dbb97561d57..42d377942e7 100644 --- a/gcc/config/m68k/m68k.h +++ b/gcc/config/m68k/m68k.h @@ -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) diff --git a/gcc/config/m68k/sync.md b/gcc/config/m68k/sync.md index 6c840f51b60..d5cab792ba4 100644 --- a/gcc/config/m68k/sync.md +++ b/gcc/config/m68k/sync.md @@ -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")