Add vec_duplicate<mode> expander for SSE2 if we can move from GPR to SSE
register directly.
* config/i386/i386-expand.c (ix86_expand_vector_init_duplicate):
Make it global.
* config/i386/i386-protos.h (ix86_expand_vector_init_duplicate):
New prototype.
* config/i386/sse.md (INT_BROADCAST_MODE): New mode iterator.
(vec_duplicate<mode>): New expander.
---
gcc/config/i386/i386-expand.c | 5 +----
gcc/config/i386/i386-protos.h | 2 ++
gcc/config/i386/sse.md | 31 +++++++++++++++++++++++++++++++
3 files changed, 34 insertions(+), 4 deletions(-)
diff --git a/gcc/config/i386/i386-expand.c b/gcc/config/i386/i386-expand.c
index e0e3ed4d8a4..e04019c4b79 100644
--- a/gcc/config/i386/i386-expand.c
+++ b/gcc/config/i386/i386-expand.c
@@ -93,9 +93,6 @@ along with GCC; see the file COPYING3. If not see
#include "i386-builtins.h"
#include "i386-expand.h"
-static bool ix86_expand_vector_init_duplicate (bool, machine_mode, rtx,
- rtx);
-
/* Split one or more double-mode RTL references into pairs of half-mode
references. The RTL can be REG, offsettable MEM, integer constant, or
CONST_DOUBLE. "operands" is a pointer to an array of double-mode RTLs to
@@ -13909,7 +13906,7 @@ static bool expand_vec_perm_1 (struct expand_vec_perm_d
*d);
/* A subroutine of ix86_expand_vector_init. Store into TARGET a vector
with all elements equal to VAR. Return true if successful. */
-static bool
+bool
ix86_expand_vector_init_duplicate (bool mmx_ok, machine_mode mode,
rtx target, rtx val)
{
diff --git a/gcc/config/i386/i386-protos.h b/gcc/config/i386/i386-protos.h
index 71745b9a1ea..51376fcc454 100644
--- a/gcc/config/i386/i386-protos.h
+++ b/gcc/config/i386/i386-protos.h
@@ -258,6 +258,8 @@ extern void ix86_expand_mul_widen_hilo (rtx, rtx, rtx,
bool, bool);
extern void ix86_expand_sse2_mulv4si3 (rtx, rtx, rtx);
extern void ix86_expand_sse2_mulvxdi3 (rtx, rtx, rtx);
extern void ix86_expand_sse2_abs (rtx, rtx);
+extern bool ix86_expand_vector_init_duplicate (bool, machine_mode, rtx,
+ rtx);
/* In i386-c.c */
extern void ix86_target_macros (void);
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index ffcc0c81964..5ededaedac7 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -24814,3 +24814,34 @@ (define_insn "*aes<aeswideklvariant>u8"
"TARGET_WIDEKL"
"aes<aeswideklvariant>\t{%0}"
[(set_attr "type" "other")])
+
+;; Modes handled by broadcast patterns. NB: Allow V64QI and V32HI with
+;; TARGET_AVX512F since ix86_expand_vector_init_duplicate can expand
+;; without TARGET_AVX512BW which is used by memset vector broadcast
+;; expander to XI with:
+;; vmovd %edi, %xmm15
+;; vpbroadcastb %xmm15, %ymm15
+;; vinserti64x4 $0x1, %ymm15, %zmm15, %zmm15
+
+(define_mode_iterator INT_BROADCAST_MODE
+ [(V64QI "TARGET_AVX512F") (V32QI "TARGET_AVX") V16QI
+ (V32HI "TARGET_AVX512F") (V16HI "TARGET_AVX") V8HI
+ (V16SI "TARGET_AVX512F") (V8SI "TARGET_AVX") V4SI
+ (V8DI "TARGET_AVX512F && TARGET_64BIT")
+ (V4DI "TARGET_AVX && TARGET_64BIT") (V2DI "TARGET_64BIT")])
+
+;; Broadcast from an integer. NB: Enable broadcast only if we can move
+;; from GPR to SSE register directly.
+(define_expand "vec_duplicate<mode>"
+ [(set (match_operand:INT_BROADCAST_MODE 0 "register_operand")
+ (vec_duplicate:INT_BROADCAST_MODE
+ (match_operand:<ssescalarmode> 1 "nonimmediate_operand")))]
+ "TARGET_SSE2 && TARGET_INTER_UNIT_MOVES_TO_VEC"
+{
+ if (!ix86_expand_vector_init_duplicate (false,
+ GET_MODE (operands[0]),
+ operands[0],
+ operands[1]))
+ gcc_unreachable ();
+ DONE;
+})
--
2.31.1
