This patch will cause gcc.dg/vect/bb-slp-35.c test to fail.

gcc/ChangeLog:

        * config/loongarch/lasx.md (hi_lo): Move to ...
        * config/loongarch/simd.md (hi_lo): ... here.
        * config/loongarch/loongarch.cc
        (loongarch_expand_vec_widen_hilo): Add 128-bit data processing.
        * config/loongarch/lsx.md
        (vec_widen_<su><optab>_<hi_lo>_<mode>): New define_expand.
        (vec_widen_<su>mult_<hi_lo>_<mode>): Likewise.

Change-Id: I2842549a10d20c89c631e0e9b07c90b905ccde4e
---
 gcc/config/loongarch/lasx.md      |  2 --
 gcc/config/loongarch/loongarch.cc | 24 ++++++++++++++++++++-
 gcc/config/loongarch/lsx.md       | 35 +++++++++++++++++++++++++++++++
 gcc/config/loongarch/simd.md      |  2 ++
 4 files changed, 60 insertions(+), 3 deletions(-)

diff --git a/gcc/config/loongarch/lasx.md b/gcc/config/loongarch/lasx.md
index d49b1c8bc32..72b490727ee 100644
--- a/gcc/config/loongarch/lasx.md
+++ b/gcc/config/loongarch/lasx.md
@@ -3591,8 +3591,6 @@ (define_insn "lasx_xvstx"
   [(set_attr "type" "simd_store")
    (set_attr "mode" "DI")])
 
-(define_int_attr hi_lo [(0 "lo") (1 "hi")])
-
 (define_expand "vec_widen_<su><optab>_<hi_lo>_<mode>"
   [(match_operand:<VDMODE256> 0 "register_operand")
    (match_operand:ILASX_HB 1 "register_operand")
diff --git a/gcc/config/loongarch/loongarch.cc 
b/gcc/config/loongarch/loongarch.cc
index 3becfc1f3f4..55a9e702bb4 100644
--- a/gcc/config/loongarch/loongarch.cc
+++ b/gcc/config/loongarch/loongarch.cc
@@ -8780,6 +8780,29 @@ loongarch_expand_vec_widen_hilo (rtx dest, rtx op1, rtx 
op2,
        {
          emit_insn (fn_even (t1, op1, op2));
          emit_insn (fn_odd (t2, op1, op2));
+         loongarch_expand_vec_interleave (t3, t1, t2, high_p);
+       }
+      break;
+
+    case V8HImode:
+       {
+         emit_insn (fn_even (t1, op1, op2));
+         emit_insn (fn_odd (t2, op1, op2));
+         if (high_p)
+           emit_insn (gen_lsx_vilvh_w (t3, t1, t2));
+         else
+           emit_insn (gen_lsx_vilvl_w (t3, t1, t2));
+       }
+      break;
+
+    case V16QImode:
+       {
+         emit_insn (fn_even (t1, op1, op2));
+         emit_insn (fn_odd (t2, op1, op2));
+         if (high_p)
+           emit_insn (gen_lsx_vilvh_h (t3, t1, t2));
+         else
+           emit_insn (gen_lsx_vilvl_h (t3, t1, t2));
        }
       break;
 
@@ -8787,7 +8810,6 @@ loongarch_expand_vec_widen_hilo (rtx dest, rtx op1, rtx 
op2,
       gcc_unreachable ();
     }
 
-  loongarch_expand_vec_interleave (t3, t1, t2, high_p);
   emit_move_insn (dest, gen_lowpart (wmode, t3));
 }
 
diff --git a/gcc/config/loongarch/lsx.md b/gcc/config/loongarch/lsx.md
index fb0236ba0f1..be3a99b6d12 100644
--- a/gcc/config/loongarch/lsx.md
+++ b/gcc/config/loongarch/lsx.md
@@ -3220,3 +3220,38 @@ (define_peephole2
   [(set (match_dup 0)
        (vec_duplicate:V2DI (match_dup 1)))]
   "")
+
+(define_expand "vec_widen_<su><optab>_<hi_lo>_<mode>"
+  [(match_operand:<VDMODE> 0 "register_operand")
+   (match_operand:ILSX_HB 1 "register_operand")
+   (match_operand:ILSX_HB 2 "register_operand")
+   (any_extend (const_int 0))
+   (addsub (const_int 0) (const_int 0))
+   (const_int zero_one)]
+  "ISA_HAS_LSX"
+{
+  rtx (*fn_even) (rtx, rtx, rtx) =
+gen_lsx_v<optab>wev_<dlsxfmt>_<lsxfmt><u>;
+  rtx (*fn_odd) (rtx, rtx, rtx) =
+gen_lsx_v<optab>wod_<dlsxfmt>_<lsxfmt><u>;
+  loongarch_expand_vec_widen_hilo (operands[0], operands[1], operands[2],
+                        <zero_one>, fn_even, fn_odd);
+  DONE;
+})
+
+(define_expand "vec_widen_<su>mult_<hi_lo>_<mode>"
+  [(match_operand:<VDMODE> 0 "register_operand")
+   (match_operand:ILSX_HB 1 "register_operand")
+   (match_operand:ILSX_HB 2 "register_operand")
+   (any_extend (const_int 0))
+   (const_int zero_one)]
+  "ISA_HAS_LSX"
+{
+  rtx (*fn_even) (rtx, rtx, rtx) =
+gen_lsx_vmulwev_<dlsxfmt>_<lsxfmt><u>;
+  rtx (*fn_odd) (rtx, rtx, rtx) =
+gen_lsx_vmulwod_<dlsxfmt>_<lsxfmt><u>;
+  loongarch_expand_vec_widen_hilo (operands[0], operands[1], operands[2],
+                        <zero_one>, fn_even, fn_odd);
+  DONE;
+})
diff --git a/gcc/config/loongarch/simd.md b/gcc/config/loongarch/simd.md
index 4156b269f9a..12eda2ee5ca 100644
--- a/gcc/config/loongarch/simd.md
+++ b/gcc/config/loongarch/simd.md
@@ -169,6 +169,8 @@ (define_mode_attr bitimm [(V16QI "uimm3") (V32QI "uimm3")
                          (V4SI  "uimm5") (V8SI "uimm5")
                          (V2DI  "uimm6") (V4DI "uimm6")])
 
+(define_int_attr hi_lo [(0 "lo") (1 "hi")])
+
 ;; =======================================================================
 ;; For many LASX instructions, the only difference of it from the LSX
 ;; counterpart is the length of vector operands.  Describe these LSX/LASX
-- 
2.34.1

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