[APX NF] Support APX NF for right shift insns

gcc/ChangeLog:

	* config/i386/i386.md (*ashr<mode>3_1<nf_name>): New
	define_insn.
	(*lshr<mode>3_1<nf_name>): Ditto.
	(*lshrqi3_1<nf_name>): Ditto.
	(*lshrhi3_1<nf_name>): Ditto.

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 8063cb576f580beae727fed8cfd247a0814bd43f..f1c828a6dc3c36fa29c9da0a0d19849497e787fa 100644 (file)
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -16325,13 +16325,13 @@
   [(set_attr "type" "ishiftx")
    (set_attr "mode" "<MODE>")])
 
-(define_insn "*ashr<mode>3_1"
+(define_insn "*ashr<mode>3_1<nf_name>"
   [(set (match_operand:SWI48 0 "nonimmediate_operand" "=rm,r,r")
        (ashiftrt:SWI48
          (match_operand:SWI48 1 "nonimmediate_operand" "0,rm,rm")
-         (match_operand:QI 2 "nonmemory_operand" "c<S>,r,c<S>")))
-   (clobber (reg:CC FLAGS_REG))]
-  "ix86_binary_operator_ok (ASHIFTRT, <MODE>mode, operands, TARGET_APX_NDD)"
+         (match_operand:QI 2 "nonmemory_operand" "c<S>,r,c<S>")))]
+  "ix86_binary_operator_ok (ASHIFTRT, <MODE>mode, operands, TARGET_APX_NDD)
+   && <nf_condition>"
 {
   bool use_ndd = get_attr_isa (insn) == ISA_APX_NDD;
   switch (get_attr_type (insn))
@@ -16342,11 +16342,11 @@
     default:
       if (operands[2] == const1_rtx
          && (TARGET_SHIFT1 || optimize_function_for_size_p (cfun))
-         && !use_ndd)
+         && !use_ndd && !<nf_applied>)
        return "sar{<imodesuffix>}\t%0";
       else
-       return use_ndd ? "sar{<imodesuffix>}\t{%2, %1, %0|%0, %1, %2}"
-                      : "sar{<imodesuffix>}\t{%2, %0|%0, %2}";
+       return use_ndd ? "<nf_prefix>sar{<imodesuffix>}\t{%2, %1, %0|%0, %1, %2}"
+                      : "<nf_prefix>sar{<imodesuffix>}\t{%2, %0|%0, %2}";
     }
 }
   [(set_attr "isa" "*,bmi2,apx_ndd")
@@ -16386,14 +16386,13 @@
 }
 [(set_attr "isa" "*,*,*,apx_ndd")])
 
-
-(define_insn "*lshr<mode>3_1"
+(define_insn "*lshr<mode>3_1<nf_name>"
   [(set (match_operand:SWI48 0 "nonimmediate_operand" "=rm,r,?k,r")
        (lshiftrt:SWI48
          (match_operand:SWI48 1 "nonimmediate_operand" "0,rm,k,rm")
-         (match_operand:QI 2 "nonmemory_operand" "c<S>,r,<KS>,c<S>")))
-   (clobber (reg:CC FLAGS_REG))]
-  "ix86_binary_operator_ok (LSHIFTRT, <MODE>mode, operands, TARGET_APX_NDD)"
+         (match_operand:QI 2 "nonmemory_operand" "c<S>,r,<KS>,c<S>")))]
+  "ix86_binary_operator_ok (LSHIFTRT, <MODE>mode, operands, TARGET_APX_NDD)
+   && <nf_condition>"
 {
   bool use_ndd = get_attr_isa (insn) == ISA_APX_NDD;
   switch (get_attr_type (insn))
@@ -16405,11 +16404,11 @@
     default:
       if (operands[2] == const1_rtx
          && (TARGET_SHIFT1 || optimize_function_for_size_p (cfun))
-         && !use_ndd)
+         && !use_ndd && !<nf_applied>)
        return "shr{<imodesuffix>}\t%0";
       else
-       return use_ndd ? "shr{<imodesuffix>}\t{%2, %1, %0|%0, %1, %2}"
-                      : "shr{<imodesuffix>}\t{%2, %0|%0, %2}";
+       return use_ndd ? "<nf_prefix>shr{<imodesuffix>}\t{%2, %1, %0|%0, %1, %2}"
+                      : "<nf_prefix>shr{<imodesuffix>}\t{%2, %0|%0, %2}";
     }
 }
   [(set_attr "isa" "*,bmi2,avx512bw,apx_ndd")
@@ -16425,6 +16424,17 @@
    (set_attr "mode" "<MODE>")])
 
 ;; Convert shift to the shiftx pattern to avoid flags dependency.
+;; For NF/NDD doesn't support shift count as r, it just support c<S>,
+;; and it has no flag.
+(define_split
+  [(set (match_operand:SWI48 0 "register_operand")
+       (any_shiftrt:SWI48 (match_operand:SWI48 1 "nonimmediate_operand")
+                          (match_operand:QI 2 "register_operand")))]
+  "TARGET_BMI2 && reload_completed"
+  [(set (match_dup 0)
+       (any_shiftrt:SWI48 (match_dup 1) (match_dup 2)))]
+  "operands[2] = gen_lowpart (<MODE>mode, operands[2]);")
+
 (define_split
   [(set (match_operand:SWI48 0 "register_operand")
        (any_shiftrt:SWI48 (match_operand:SWI48 1 "nonimmediate_operand")
@@ -16493,22 +16503,22 @@
        (zero_extend:DI (any_shiftrt:SI (match_dup 1) (match_dup 2))))]
   "operands[2] = gen_lowpart (SImode, operands[2]);")
 
-(define_insn "*ashr<mode>3_1"
+(define_insn "*ashr<mode>3_1<nf_name>"
   [(set (match_operand:SWI12 0 "nonimmediate_operand" "=<r>m, r")
        (ashiftrt:SWI12
          (match_operand:SWI12 1 "nonimmediate_operand" "0, rm")
-         (match_operand:QI 2 "nonmemory_operand" "c<S>, c<S>")))
-   (clobber (reg:CC FLAGS_REG))]
-  "ix86_binary_operator_ok (ASHIFTRT, <MODE>mode, operands, TARGET_APX_NDD)"
+         (match_operand:QI 2 "nonmemory_operand" "c<S>, c<S>")))]
+  "ix86_binary_operator_ok (ASHIFTRT, <MODE>mode, operands, TARGET_APX_NDD)
+   && <nf_condition>"
 {
   bool use_ndd = get_attr_isa (insn) == ISA_APX_NDD;
   if (operands[2] == const1_rtx
       && (TARGET_SHIFT1 || optimize_function_for_size_p (cfun))
-      && !use_ndd)
+      && !use_ndd && !<nf_applied>)
     return "sar{<imodesuffix>}\t%0";
   else
-    return use_ndd ? "sar{<imodesuffix>}\t{%2, %1, %0|%0, %1, %2}"
-                  : "sar{<imodesuffix>}\t{%2, %0|%0, %2}";
+    return use_ndd ? "<nf_prefix>sar{<imodesuffix>}\t{%2, %1, %0|%0, %1, %2}"
+                  : "<nf_prefix>sar{<imodesuffix>}\t{%2, %0|%0, %2}";
 }
   [(set_attr "isa" "*, apx_ndd")
    (set_attr "type" "ishift")
@@ -16521,13 +16531,13 @@
        (const_string "*")))
    (set_attr "mode" "<MODE>")])
 
-(define_insn "*lshrqi3_1"
+(define_insn "*lshrqi3_1<nf_name>"
   [(set (match_operand:QI 0 "nonimmediate_operand"  "=qm,?k,r")
        (lshiftrt:QI
          (match_operand:QI 1 "nonimmediate_operand" "0, k, rm")
-         (match_operand:QI 2 "nonmemory_operand"    "cI,Wb,cI")))
-   (clobber (reg:CC FLAGS_REG))]
-  "ix86_binary_operator_ok (LSHIFTRT, QImode, operands, TARGET_APX_NDD)"
+         (match_operand:QI 2 "nonmemory_operand"    "cI,Wb,cI")))]
+  "ix86_binary_operator_ok (LSHIFTRT, QImode, operands, TARGET_APX_NDD)
+   && <nf_condition>"
 {
   bool use_ndd = get_attr_isa (insn) == ISA_APX_NDD;
   switch (get_attr_type (insn))
@@ -16535,11 +16545,11 @@
     case TYPE_ISHIFT:
       if (operands[2] == const1_rtx
          && (TARGET_SHIFT1 || optimize_function_for_size_p (cfun))
-         && !use_ndd)
+         && !use_ndd && !<nf_applied>)
        return "shr{b}\t%0";
       else
-       return use_ndd ? "shr{b}\t{%2, %1, %0|%0, %1, %2}"
-                      : "shr{b}\t{%2, %0|%0, %2}";
+       return use_ndd ? "<nf_prefix>shr{b}\t{%2, %1, %0|%0, %1, %2}"
+                      : "<nf_prefix>shr{b}\t{%2, %0|%0, %2}";
     case TYPE_MSKLOG:
       return "#";
     default:
@@ -16558,13 +16568,13 @@
        (const_string "*")))
    (set_attr "mode" "QI")])
 
-(define_insn "*lshrhi3_1"
+(define_insn "*lshrhi3_1<nf_name>"
   [(set (match_operand:HI 0 "nonimmediate_operand" "=rm, ?k, r")
        (lshiftrt:HI
          (match_operand:HI 1 "nonimmediate_operand" "0, k, rm")
-         (match_operand:QI 2 "nonmemory_operand" "cI, Ww, cI")))
-   (clobber (reg:CC FLAGS_REG))]
-  "ix86_binary_operator_ok (LSHIFTRT, HImode, operands, TARGET_APX_NDD)"
+         (match_operand:QI 2 "nonmemory_operand" "cI, Ww, cI")))]
+  "ix86_binary_operator_ok (LSHIFTRT, HImode, operands, TARGET_APX_NDD)
+   && <nf_condition>"
 {
   bool use_ndd = get_attr_isa (insn) == ISA_APX_NDD;
   switch (get_attr_type (insn))
@@ -16572,11 +16582,11 @@
     case TYPE_ISHIFT:
       if (operands[2] == const1_rtx
          && (TARGET_SHIFT1 || optimize_function_for_size_p (cfun))
-         && !use_ndd)
+         && !use_ndd && !<nf_applied>)
        return "shr{w}\t%0";
       else
-       return use_ndd ? "shr{w}\t{%2, %1, %0|%0, %1, %2}"
-                      : "shr{w}\t{%2, %0|%0, %2}";
+       return use_ndd ? "<nf_prefix>shr{w}\t{%2, %1, %0|%0, %1, %2}"
+                      : "<nf_prefix>shr{w}\t{%2, %0|%0, %2}";
     case TYPE_MSKLOG:
       return "#";
     default: