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* [gcc r12-5339] aarch64: Add new vector mode V8DI
@ 2021-11-17 14:00 Przemyslaw Wirkus
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From: Przemyslaw Wirkus @ 2021-11-17 14:00 UTC (permalink / raw)
To: gcc-cvs
https://gcc.gnu.org/g:dd159a4167ca19b5ff26e7156333c88e854943bf
commit r12-5339-gdd159a4167ca19b5ff26e7156333c88e854943bf
Author: Przemyslaw Wirkus <przemyslaw.wirkus@arm.com>
Date: Wed Nov 17 13:38:24 2021 +0000
aarch64: Add new vector mode V8DI
This patch is adding new V8DI mode which will be used with new Armv8.7-A
LS64 extension intrinsics.
gcc/ChangeLog:
* config/aarch64/aarch64-modes.def (VECTOR_MODE): New V8DI mode.
* config/aarch64/aarch64.c (aarch64_hard_regno_mode_ok): Handle
V8DImode.
* config/aarch64/iterators.md (define_mode_attr nunits): Add entry
for V8DI.
Diff:
---
gcc/config/aarch64/aarch64-modes.def | 5 +++++
gcc/config/aarch64/aarch64.c | 4 ++++
gcc/config/aarch64/iterators.md | 2 +-
3 files changed, 10 insertions(+), 1 deletion(-)
diff --git a/gcc/config/aarch64/aarch64-modes.def b/gcc/config/aarch64/aarch64-modes.def
index ac97d222789..f0265bd15b2 100644
--- a/gcc/config/aarch64/aarch64-modes.def
+++ b/gcc/config/aarch64/aarch64-modes.def
@@ -81,6 +81,11 @@ INT_MODE (OI, 32);
INT_MODE (CI, 48);
INT_MODE (XI, 64);
+/* V8DI mode. */
+VECTOR_MODE_WITH_PREFIX (V, INT, DI, 8, 5);
+
+ADJUST_ALIGNMENT (V8DI, 8);
+
/* Define Advanced SIMD modes for structures of 2, 3 and 4 d-registers. */
#define ADV_SIMD_D_REG_STRUCT_MODES(NVECS, VB, VH, VS, VD) \
VECTOR_MODES_WITH_PREFIX (V##NVECS##x, INT, 8, 3); \
diff --git a/gcc/config/aarch64/aarch64.c b/gcc/config/aarch64/aarch64.c
index d8410fc52f2..7389b5953dc 100644
--- a/gcc/config/aarch64/aarch64.c
+++ b/gcc/config/aarch64/aarch64.c
@@ -3394,6 +3394,10 @@ aarch64_hard_regno_nregs (unsigned regno, machine_mode mode)
static bool
aarch64_hard_regno_mode_ok (unsigned regno, machine_mode mode)
{
+ if (mode == V8DImode)
+ return IN_RANGE (regno, R0_REGNUM, R23_REGNUM)
+ && multiple_p (regno - R0_REGNUM, 2);
+
if (GET_MODE_CLASS (mode) == MODE_CC)
return regno == CC_REGNUM;
diff --git a/gcc/config/aarch64/iterators.md b/gcc/config/aarch64/iterators.md
index a9842b3bddf..2c58d5570ae 100644
--- a/gcc/config/aarch64/iterators.md
+++ b/gcc/config/aarch64/iterators.md
@@ -1062,7 +1062,7 @@
(define_mode_attr nunits [(V8QI "8") (V16QI "16")
(V4HI "4") (V8HI "8")
(V2SI "2") (V4SI "4")
- (V2DI "2")
+ (V2DI "2") (V8DI "8")
(V4HF "4") (V8HF "8")
(V4BF "4") (V8BF "8")
(V2SF "2") (V4SF "4")
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