diff options
Diffstat (limited to 'gcc/config/arc/arc.cc')
| -rw-r--r-- | gcc/config/arc/arc.cc | 32 |
1 files changed, 30 insertions, 2 deletions
diff --git a/gcc/config/arc/arc.cc b/gcc/config/arc/arc.cc index 3b4b038..bb5db97 100644 --- a/gcc/config/arc/arc.cc +++ b/gcc/config/arc/arc.cc @@ -1436,6 +1436,13 @@ get_arc_condition_code (rtx comparison) case GEU : return ARC_CC_NC; default : gcc_unreachable (); } + case E_CC_Vmode: + switch (GET_CODE (comparison)) + { + case EQ : return ARC_CC_NV; + case NE : return ARC_CC_V; + default : gcc_unreachable (); + } case E_CC_FP_GTmode: if (TARGET_ARGONAUT_SET && TARGET_SPFP) switch (GET_CODE (comparison)) @@ -1546,6 +1553,13 @@ arc_select_cc_mode (enum rtx_code op, rtx x, rtx y) machine_mode mode = GET_MODE (x); rtx x1; + /* Matches all instructions which can do .f and clobbers only Z flag. */ + if (GET_MODE_CLASS (mode) == MODE_INT + && y == const0_rtx + && GET_CODE (x) == MULT + && (op == EQ || op == NE)) + return CC_Zmode; + /* For an operation that sets the condition codes as a side-effect, the C and V flags is not set as for cmp, so we can only use comparisons where this doesn't matter. (For LT and GE we can use "mi" and "pl" @@ -8218,8 +8232,7 @@ hwloop_optimize (hwloop_info loop) insn = emit_insn (gen_arc_lp (loop->start_label, loop->end_label)); - seq = get_insns (); - end_sequence (); + seq = end_sequence (); entry_after = BB_END (entry_bb); if (!single_succ_p (entry_bb) || vec_safe_length (loop->incoming) > 1 @@ -11544,6 +11557,21 @@ arc_libm_function_max_error (unsigned cfn, machine_mode mode, return default_libm_function_max_error (cfn, mode, boundary_p); } +void +arc_gen_unlikely_cbranch (enum rtx_code cmp, machine_mode cc_mode, rtx label) +{ + rtx cc_reg, x; + + cc_reg = gen_rtx_REG (cc_mode, CC_REG); + label = gen_rtx_LABEL_REF (VOIDmode, label); + + x = gen_rtx_fmt_ee (cmp, VOIDmode, cc_reg, const0_rtx); + x = gen_rtx_IF_THEN_ELSE (VOIDmode, x, label, pc_rtx); + + emit_unlikely_jump (gen_rtx_SET (pc_rtx, x)); +} + + #undef TARGET_USE_ANCHORS_FOR_SYMBOL_P #define TARGET_USE_ANCHORS_FOR_SYMBOL_P arc_use_anchors_for_symbol_p |