File _service:tar_scm:0224-Backport-SME-aarch64-Add-... of Package gcc

File _service:tar_scm:0224-Backport-SME-aarch64-Add-V1DI-mode.patch of Package gcc

From 21f9190106f8324be42e3e8e0510467386dd68a0 Mon Sep 17 00:00:00 2001
From: Andrew Carlotti <andrew.carlotti@arm.com>
Date: Fri, 15 Jul 2022 15:25:53 +0100
Subject: [PATCH 125/157] [Backport][SME] aarch64: Add V1DI mode

Reference: https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=5ba864c5d11a1c20891a1e054cb7814ec23de5c9

We already have a V1DF mode, so this makes the vector modes more consistent.

Additionally, this allows us to recognise uint64x1_t and int64x1_t types given
only the mode and type qualifiers (e.g. in aarch64_lookup_simd_builtin_type).

gcc/ChangeLog:

* config/aarch64/aarch64-builtins.cc
	(v1di_UP): Add V1DI mode to _UP macros.
	* config/aarch64/aarch64-modes.def (VECTOR_MODE): Add V1DI mode.
	* config/aarch64/aarch64-simd-builtin-types.def: Use V1DI mode.
	* config/aarch64/aarch64-simd.md
	(vec_extractv2dfv1df): Replace with...
	(vec_extract<mode><V1half>): ...this.
	* config/aarch64/aarch64.cc
	(aarch64_classify_vector_mode): Add V1DI mode.
	* config/aarch64/iterators.md
	(VQ_2E, V1HALF, V1half): New.
	(nunits): Add V1DI mode.
---
 gcc/config/aarch64/aarch64-builtins.cc            |  1 +
 gcc/config/aarch64/aarch64-modes.def              |  1 +
 gcc/config/aarch64/aarch64-simd-builtin-types.def |  6 +++---
 gcc/config/aarch64/aarch64-simd.md                | 14 +++++++-------
 gcc/config/aarch64/aarch64.cc                     |  2 +-
 gcc/config/aarch64/iterators.md                   | 14 ++++++++++++--
 6 files changed, 25 insertions(+), 13 deletions(-)

diff --git a/gcc/config/aarch64/aarch64-builtins.cc b/gcc/config/aarch64/aarch64-builtins.cc
index 015e9d975..37bb3af48 100644
--- a/gcc/config/aarch64/aarch64-builtins.cc
+++ b/gcc/config/aarch64/aarch64-builtins.cc
@@ -55,6 +55,7 @@
 #define v2si_UP  E_V2SImode
 #define v2sf_UP  E_V2SFmode
 #define v1df_UP  E_V1DFmode
+#define v1di_UP  E_V1DImode
 #define di_UP    E_DImode
 #define df_UP    E_DFmode
 #define v16qi_UP E_V16QImode
diff --git a/gcc/config/aarch64/aarch64-modes.def b/gcc/config/aarch64/aarch64-modes.def
index 8fa66fdb3..dd74da4b3 100644
--- a/gcc/config/aarch64/aarch64-modes.def
+++ b/gcc/config/aarch64/aarch64-modes.def
@@ -70,6 +70,7 @@ VECTOR_MODES (INT, 8);        /*       V8QI V4HI V2SI.  */
 VECTOR_MODES (INT, 16);       /* V16QI V8HI V4SI V2DI.  */
 VECTOR_MODES (FLOAT, 8);      /*                 V2SF.  */
 VECTOR_MODES (FLOAT, 16);     /*            V4SF V2DF.  */
+VECTOR_MODE (INT, DI, 1);     /*                 V1DI.  */
 VECTOR_MODE (FLOAT, DF, 1);   /*                 V1DF.  */
 VECTOR_MODE (FLOAT, HF, 2);   /*                 V2HF.  */
 
diff --git a/gcc/config/aarch64/aarch64-simd-builtin-types.def b/gcc/config/aarch64/aarch64-simd-builtin-types.def
index 248e51e96..405455814 100644
--- a/gcc/config/aarch64/aarch64-simd-builtin-types.def
+++ b/gcc/config/aarch64/aarch64-simd-builtin-types.def
@@ -24,7 +24,7 @@
   ENTRY (Int16x8_t, V8HI, none, 11)
   ENTRY (Int32x2_t, V2SI, none, 11)
   ENTRY (Int32x4_t, V4SI, none, 11)
-  ENTRY (Int64x1_t, DI, none, 11)
+  ENTRY (Int64x1_t, V1DI, none, 11)
   ENTRY (Int64x2_t, V2DI, none, 11)
   ENTRY (Uint8x8_t, V8QI, unsigned, 11)
   ENTRY (Uint8x16_t, V16QI, unsigned, 12)
@@ -32,7 +32,7 @@
   ENTRY (Uint16x8_t, V8HI, unsigned, 12)
   ENTRY (Uint32x2_t, V2SI, unsigned, 12)
   ENTRY (Uint32x4_t, V4SI, unsigned, 12)
-  ENTRY (Uint64x1_t, DI, unsigned, 12)
+  ENTRY (Uint64x1_t, V1DI, unsigned, 12)
   ENTRY (Uint64x2_t, V2DI, unsigned, 12)
   ENTRY (Poly8_t, QI, poly, 9)
   ENTRY (Poly16_t, HI, poly, 10)
@@ -42,7 +42,7 @@
   ENTRY (Poly8x16_t, V16QI, poly, 12)
   ENTRY (Poly16x4_t, V4HI, poly, 12)
   ENTRY (Poly16x8_t, V8HI, poly, 12)
-  ENTRY (Poly64x1_t, DI, poly, 12)
+  ENTRY (Poly64x1_t, V1DI, poly, 12)
   ENTRY (Poly64x2_t, V2DI, poly, 12)
   ENTRY (Float16x4_t, V4HF, none, 13)
   ENTRY (Float16x8_t, V8HF, none, 13)
diff --git a/gcc/config/aarch64/aarch64-simd.md b/gcc/config/aarch64/aarch64-simd.md
index 62493cdfa..04592fc90 100644
--- a/gcc/config/aarch64/aarch64-simd.md
+++ b/gcc/config/aarch64/aarch64-simd.md
@@ -8326,16 +8326,16 @@
 })
 
 ;; Extract a single-element 64-bit vector from one half of a 128-bit vector.
-(define_expand "vec_extractv2dfv1df"
-  [(match_operand:V1DF 0 "register_operand")
-   (match_operand:V2DF 1 "register_operand")
+(define_expand "vec_extract<mode><V1half>"
+  [(match_operand:<V1HALF> 0 "register_operand")
+   (match_operand:VQ_2E 1 "register_operand")
    (match_operand 2 "immediate_operand")]
   "TARGET_SIMD"
 {
-  /* V1DF is rarely used by other patterns, so it should be better to hide
-     it in a subreg destination of a normal DF op.  */
-  rtx scalar0 = gen_lowpart (DFmode, operands[0]);
-  emit_insn (gen_vec_extractv2dfdf (scalar0, operands[1], operands[2]));
+  /* V1DI and V1DF are rarely used by other patterns, so it should be better
+     to hide it in a subreg destination of a normal DI or DF op.  */
+  rtx scalar0 = gen_lowpart (<VHALF>mode, operands[0]);
+  emit_insn (gen_vec_extract<mode><Vhalf> (scalar0, operands[1], operands[2]));
   DONE;
 })
 
diff --git a/gcc/config/aarch64/aarch64.cc b/gcc/config/aarch64/aarch64.cc
index b8e540b6e..f7285555b 100644
--- a/gcc/config/aarch64/aarch64.cc
+++ b/gcc/config/aarch64/aarch64.cc
@@ -4117,7 +4117,7 @@ aarch64_classify_vector_mode (machine_mode mode)
     case E_V8QImode:
     case E_V4HImode:
     case E_V2SImode:
-    /* ...E_V1DImode doesn't exist.  */
+    case E_V1DImode:
     case E_V4HFmode:
     case E_V4BFmode:
     case E_V2SFmode:
diff --git a/gcc/config/aarch64/iterators.md b/gcc/config/aarch64/iterators.md
index 152d28f6b..94db8c53f 100644
--- a/gcc/config/aarch64/iterators.md
+++ b/gcc/config/aarch64/iterators.md
@@ -138,6 +138,9 @@
 ;; VQ without 2 element modes.
 (define_mode_iterator VQ_NO2E [V16QI V8HI V4SI V8HF V4SF V8BF])
 
+;; 2 element quad vector modes.
+(define_mode_iterator VQ_2E [V2DI V2DF])
+
 ;; BFmode vector modes.
 (define_mode_iterator VBF [V4BF V8BF])
 
@@ -1116,12 +1119,13 @@
 (define_mode_attr nunits [(V8QI "8") (V16QI "16")
 			  (V4HI "4") (V8HI "8")
 			  (V2SI "2") (V4SI "4")
-			  (V2DI "2") (V8DI "8")
+			  (V1DI "1") (V2DI "2")
 			  (V4HF "4") (V8HF "8")
 			  (V4BF "4") (V8BF "8")
 			  (V2SF "2") (V4SF "4")
 			  (V1DF "1") (V2DF "2")
-			  (DI "1") (DF "1")])
+			  (DI "1") (DF "1")
+			  (V8DI "8")])
 
 ;; Map a mode to the number of bits in it, if the size of the mode
 ;; is constant.
@@ -1501,6 +1505,12 @@
 			 (V2DI "di")    (V2SF  "sf")
 			 (V4SF "v2sf")  (V2DF  "df")])
 
+;; Single-element half modes of quad vector modes.
+(define_mode_attr V1HALF [(V2DI "V1DI")  (V2DF  "V1DF")])
+
+;; Single-element half modes of quad vector modes, in lower-case
+(define_mode_attr V1half [(V2DI "v1di")  (V2DF  "v1df")])
+
 ;; Double modes of vector modes.
 (define_mode_attr VDBL [(V8QI "V16QI") (V4HI "V8HI")
 			(V4HF "V8HF")  (V4BF "V8BF")
-- 
2.33.0