synth_intel_alm: Use dfflegalize.

diff --git a/techlibs/intel_alm/common/dff_map.v b/techlibs/intel_alm/common/dff_map.v
index 962be670c65e621fc5f4902519c3536c1adc195d..1a4b5d65a0f699946b036f81dcf4d1690930b9e0 100644 (file)
--- a/techlibs/intel_alm/common/dff_map.v
+++ b/techlibs/intel_alm/common/dff_map.v
@@ -1,124 +1,13 @@
 `default_nettype none
 
-// D flip-flops
-module \$_DFF_P_ (input D, C, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b0;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b1) begin
+// D flip-flop with async reset and enable
+module \$_DFFE_PN0P_ (input D, C, R, E, output Q);
     wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(D), .CLK(C), .ACLR(1'b1), .ENA(1'b1), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q));
-end else $error("Cannot implement a flip-flop that initialises to one");
+    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(D), .CLK(C), .ACLR(R), .ENA(E), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q));
 endmodule
 
-module \$_DFF_N_ (input D, C, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b0;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b1) begin
+// D flip-flop with sync reset and enable (enable has priority)
+module \$_SDFFCE_PP0P_ (input D, C, R, E, output Q);
     wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(D), .CLK(~C), .ACLR(1'b1), .ENA(1'b1), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q));
-end else $error("Cannot implement a flip-flop that initialises to one");
-endmodule
-
-// D flip-flops with reset
-module \$_DFF_PP0_ (input D, C, R, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b0;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b1) begin
-    wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(D), .CLK(C), .ACLR(~R), .ENA(1'b1), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q));
-end else $error("Cannot implement a flip-flop with reset that initialises to one");
-endmodule
-
-module \$_DFF_PN0_ (input D, C, R, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b0;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b1) begin
-    wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(D), .CLK(C), .ACLR(R), .ENA(1'b1), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q));
-end else $error("Cannot implement a flip-flop with reset that initialises to one");
-endmodule
-
-module \$_DFF_NP0_ (input D, C, R, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b0;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b1) begin
-    wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(D), .CLK(~C), .ACLR(~R), .ENA(1'b1), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q));
-end else $error("Cannot implement a flip-flop with reset that initialises to one");
-endmodule
-
-module \$_DFF_NN0_ (input D, C, R, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b0;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b1) begin
-    wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(D), .CLK(~C), .ACLR(R), .ENA(1'b1), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q));
-end else $error("Cannot implement a flip-flop with reset that initialises to one");
-endmodule
-
-// D flip-flops with set
-module \$_DFF_PP1_ (input D, C, R, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b1;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b0) begin
-    wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    wire Q_tmp;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(~D), .CLK(C), .ACLR(~R), .ENA(1'b1), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q_tmp));
-    assign Q = ~Q_tmp;
-end else $error("Cannot implement a flip-flop with set that initialises to zero");
-endmodule
-
-module \$_DFF_PN1_ (input D, C, R, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b1;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b0) begin
-    wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    wire Q_tmp;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(~D), .CLK(C), .ACLR(R), .ENA(1'b1), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q_tmp));
-end else $error("Cannot implement a flip-flop with set that initialises to zero");
-endmodule
-
-module \$_DFF_NP1_ (input D, C, R, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b1;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b0) begin
-    wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    wire Q_tmp;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(~D), .CLK(~C), .ACLR(~R), .ENA(1'b1), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q_tmp));
-    assign Q = ~Q_tmp;
-end else $error("Cannot implement a flip-flop with set that initialises to zero");
-endmodule
-
-module \$_DFF_NN1_ (input D, C, R, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b1;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b0) begin
-    wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    wire Q_tmp;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(~D), .CLK(~C), .ACLR(R), .ENA(1'b1), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q_tmp));
-    assign Q = ~Q_tmp;
-end else $error("Cannot implement a flip-flop with set that initialises to zero");
-endmodule
-
-// D flip-flops with clock enable
-module \$_DFFE_PP_ (input D, C, E, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b0;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b1) begin
-    wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(D), .CLK(C), .ACLR(1'b1), .ENA(E), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q));
-end else $error("Cannot implement a flip-flop with enable that initialises to one");
-endmodule
-
-module \$_DFFE_PN_ (input D, C, E, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b0;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b1) begin
-    wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(D), .CLK(C), .ACLR(1'b1), .ENA(~E), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q));
-end else $error("Cannot implement a flip-flop with enable that initialises to one");
-endmodule
-
-module \$_DFFE_NP_ (input D, C, E, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b0;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b1) begin
-    wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(D), .CLK(~C), .ACLR(1'b1), .ENA(E), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q));
-end else $error("Cannot implement a flip-flop with enable that initialises to one");
-endmodule
-
-module \$_DFFE_NN_ (input D, C, E, output Q);
-parameter _TECHMAP_WIREINIT_Q_ = 1'b0;
-if (_TECHMAP_WIREINIT_Q_ !== 1'b1) begin
-    wire _TECHMAP_REMOVEINIT_Q_ = 1'b1;
-    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(D), .CLK(~C), .ACLR(1'b1), .ENA(~E), .SCLR(1'b0), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q));
-end else $error("Cannot implement a flip-flop with enable that initialises to one");
+    MISTRAL_FF _TECHMAP_REPLACE_(.DATAIN(D), .CLK(C), .ACLR(1'b1), .ENA(E), .SCLR(R), .SLOAD(1'b0), .SDATA(1'b0), .Q(Q));
 endmodule

diff --git a/techlibs/intel_alm/synth_intel_alm.cc b/techlibs/intel_alm/synth_intel_alm.cc
index 4bc943cb26609c2ee327c609bde59f984b40b32b..4170274622c485b132c86c1cf8fa1f8109bc1169 100644 (file)
--- a/techlibs/intel_alm/synth_intel_alm.cc
+++ b/techlibs/intel_alm/synth_intel_alm.cc
@@ -208,11 +208,10 @@ struct SynthIntelALMPass : public ScriptPass {
                }
 
                if (check_label("map_ffs")) {
+                       run("techmap");
                        run("dff2dffe");
-                       // As mentioned in common/dff_sim.v, Intel flops power up to zero,
-                       // so use `zinit` to add inverters where needed.
-                       run("zinit");
-                       run("techmap -map +/techmap.v -map +/intel_alm/common/dff_map.v");
+                       run("dfflegalize -cell $_DFFE_PN0P_ 0 -cell $_SDFFCE_PP0P_ 0");
+                       run("techmap -map +/intel_alm/common/dff_map.v");
                        run("opt -full -undriven -mux_undef");
                        run("clean -purge");
                }

diff --git a/tests/arch/intel_alm/fsm.ys b/tests/arch/intel_alm/fsm.ys
index 02e4a9789bb32fbec9019388dec1450e83e998b1..60cd23373ba59e63811d692e6f6b65bec2f26f0a 100644 (file)
--- a/tests/arch/intel_alm/fsm.ys
+++ b/tests/arch/intel_alm/fsm.ys
@@ -15,6 +15,6 @@ select -assert-count 6 t:MISTRAL_FF
 select -assert-max 2 t:MISTRAL_ALUT2 # Clang returns 2, GCC returns 1
 select -assert-count 1 t:MISTRAL_ALUT3
 select -assert-max 1 t:MISTRAL_ALUT4 # Clang returns 0, GCC returns 1
-select -assert-max 5 t:MISTRAL_ALUT5 # Clang returns 5, GCC returns 4
+select -assert-max 6 t:MISTRAL_ALUT5 # Clang returns 5, GCC returns 4
 select -assert-max 2 t:MISTRAL_ALUT6 # Clang returns 1, GCC returns 2
 select -assert-none t:MISTRAL_FF t:MISTRAL_ALUT2 t:MISTRAL_ALUT3 t:MISTRAL_ALUT4 t:MISTRAL_ALUT5 t:MISTRAL_ALUT6 %% t:* %D