diff mbox series

[2/5] LoongArch: Use standard pattern name for xvfrsqrt/vfrsqrt instructions.

Message ID 20231128032938.17202-3-xujiahao@loongson.cn
State New
Headers show
Series LoongArch: Add -mrecip option support | expand

Commit Message

Jiahao Xu Nov. 28, 2023, 3:29 a.m. UTC 
Rename lasx_xvfrsqrt*/lsx_vfrsqrt* to rsqrt<mode>2 to align with standard
pattern name.

gcc/ChangeLog:

	* config/loongarch/lasx.md (lasx_xvfrsqrt_<flasxfmt>): Renamed to ..
	(*rsqrt<mode>2): .. this.
	* config/loongarch/loongarch-builtins.cc
	(CODE_FOR_lsx_vfrsqrt_d): Redefine to standard pattern name.
	(CODE_FOR_lsx_vfrsqrt_s): Ditto.
	(CODE_FOR_lasx_xvfrsqrt_d): Ditto.
	(CODE_FOR_lasx_xvfrsqrt_s): Ditto.
	* config/loongarch/loongarch.md (*rsqrt<mode>a): Remove.
	(*rsqrt<mode>2): New insn pattern.
	(*rsqrt<mode>b): Remove.
	* config/loongarch/lsx.md (lsx_vfrsqrt_<flsxfmt>): Renamed to ..
	(*rsqrt<mode>2): .. this.
diff mbox series

Patch

diff --git a/gcc/config/loongarch/lasx.md b/gcc/config/loongarch/lasx.md
index dd60d2bfed3..5f78cc45ccd 100644
--- a/gcc/config/loongarch/lasx.md
+++ b/gcc/config/loongarch/lasx.md
@@ -1710,10 +1710,10 @@  (define_insn "lasx_xvfrint_<flasxfmt>"
   [(set_attr "type" "simd_fcvt")
    (set_attr "mode" "<MODE>")])
 
-(define_insn "lasx_xvfrsqrt_<flasxfmt>"
+(define_insn "rsqrt<mode>2"
   [(set (match_operand:FLASX 0 "register_operand" "=f")
-	(unspec:FLASX [(match_operand:FLASX 1 "register_operand" "f")]
-		      UNSPEC_LASX_XVFRSQRT))]
+    (unspec:FLASX [(match_operand:FLASX 1 "register_operand" "f")]
+		  UNSPEC_LASX_XVFRSQRT))]
   "ISA_HAS_LASX"
   "xvfrsqrt.<flasxfmt>\t%u0,%u1"
   [(set_attr "type" "simd_fdiv")
diff --git a/gcc/config/loongarch/loongarch-builtins.cc b/gcc/config/loongarch/loongarch-builtins.cc
index 47f658d6ab5..43d853bc961 100644
--- a/gcc/config/loongarch/loongarch-builtins.cc
+++ b/gcc/config/loongarch/loongarch-builtins.cc
@@ -473,6 +473,8 @@  AVAIL_ALL (lasx, ISA_HAS_LASX)
 #define CODE_FOR_lsx_vssrlrn_bu_h CODE_FOR_lsx_vssrlrn_u_bu_h
 #define CODE_FOR_lsx_vssrlrn_hu_w CODE_FOR_lsx_vssrlrn_u_hu_w
 #define CODE_FOR_lsx_vssrlrn_wu_d CODE_FOR_lsx_vssrlrn_u_wu_d
+#define CODE_FOR_lsx_vfrsqrt_d CODE_FOR_rsqrtv2df2
+#define CODE_FOR_lsx_vfrsqrt_s CODE_FOR_rsqrtv4sf2
 
 /* LoongArch ASX define CODE_FOR_lasx_mxxx */
 #define CODE_FOR_lasx_xvsadd_b CODE_FOR_ssaddv32qi3
@@ -743,6 +745,8 @@  AVAIL_ALL (lasx, ISA_HAS_LASX)
 #define CODE_FOR_lasx_xvsat_hu CODE_FOR_lasx_xvsat_u_hu
 #define CODE_FOR_lasx_xvsat_wu CODE_FOR_lasx_xvsat_u_wu
 #define CODE_FOR_lasx_xvsat_du CODE_FOR_lasx_xvsat_u_du
+#define CODE_FOR_lasx_xvfrsqrt_d CODE_FOR_rsqrtv4df2
+#define CODE_FOR_lasx_xvfrsqrt_s CODE_FOR_rsqrtv8sf2
 
 static const struct loongarch_builtin_description loongarch_builtins[] = {
 #define LARCH_MOVFCSR2GR 0
diff --git a/gcc/config/loongarch/loongarch.md b/gcc/config/loongarch/loongarch.md
index 7b09926d1a7..0b6910d84ab 100644
--- a/gcc/config/loongarch/loongarch.md
+++ b/gcc/config/loongarch/loongarch.md
@@ -60,6 +60,7 @@  (define_c_enum "unspec" [
   UNSPEC_TIE
 
   ;; RSQRT
+  UNSPEC_RSQRT
   UNSPEC_RSQRTE
 
   ;; RECIP
@@ -1137,25 +1138,14 @@  (define_insn "sqrt<mode>2"
    (set_attr "mode" "<UNITMODE>")
    (set_attr "insn_count" "1")])
 
-(define_insn "*rsqrt<mode>a"
+(define_insn "*rsqrt<mode>2"
   [(set (match_operand:ANYF 0 "register_operand" "=f")
-	(div:ANYF (match_operand:ANYF 1 "const_1_operand" "")
-		  (sqrt:ANYF (match_operand:ANYF 2 "register_operand" "f"))))]
-  "flag_unsafe_math_optimizations"
-  "frsqrt.<fmt>\t%0,%2"
-  [(set_attr "type" "frsqrt")
-   (set_attr "mode" "<UNITMODE>")
-   (set_attr "insn_count" "1")])
-
-(define_insn "*rsqrt<mode>b"
-  [(set (match_operand:ANYF 0 "register_operand" "=f")
-	(sqrt:ANYF (div:ANYF (match_operand:ANYF 1 "const_1_operand" "")
-			     (match_operand:ANYF 2 "register_operand" "f"))))]
-  "flag_unsafe_math_optimizations"
-  "frsqrt.<fmt>\t%0,%2"
+    (unspec:ANYF [(match_operand:ANYF 1 "register_operand" "f")]
+	     UNSPEC_RSQRT))]
+  "TARGET_HARD_FLOAT"
+  "frsqrt.<fmt>\t%0,%1"
   [(set_attr "type" "frsqrt")
-   (set_attr "mode" "<UNITMODE>")
-   (set_attr "insn_count" "1")])
+   (set_attr "mode" "<UNITMODE>")])
 
 ;; Approximate Reciprocal Square Root Instructions.
 
diff --git a/gcc/config/loongarch/lsx.md b/gcc/config/loongarch/lsx.md
index 391e84f8d1d..130d77e164b 100644
--- a/gcc/config/loongarch/lsx.md
+++ b/gcc/config/loongarch/lsx.md
@@ -1638,10 +1638,10 @@  (define_insn "lsx_vfrint_<flsxfmt>"
   [(set_attr "type" "simd_fcvt")
    (set_attr "mode" "<MODE>")])
 
-(define_insn "lsx_vfrsqrt_<flsxfmt>"
+(define_insn "rsqrt<mode>2"
   [(set (match_operand:FLSX 0 "register_operand" "=f")
-	(unspec:FLSX [(match_operand:FLSX 1 "register_operand" "f")]
-		     UNSPEC_LSX_VFRSQRT))]
+    (unspec:FLSX [(match_operand:FLSX 1 "register_operand" "f")]
+		 UNSPEC_LSX_VFRSQRT))]
   "ISA_HAS_LSX"
   "vfrsqrt.<flsxfmt>\t%w0,%w1"
   [(set_attr "type" "simd_fdiv")