BB vectorizer relies on the backend support of
.REDUC_{PLUS,IOR,XOR,AND} to vectorize reduction.
Bootstrapped and regtested on x86_64-pc-linux-gnu{-m32,}.
Ready push to trunk.
gcc/ChangeLog:
PR target/112325
* config/i386/sse.md (reduc_<code>_scal_<mode>): New expander.
(REDUC_ANY_LOGIC_MODE): New iterator.
(REDUC_PLUS_MODE): Extend to VxHI/SI/DImode.
(REDUC_SSE_PLUS_MODE): Ditto.
gcc/testsuite/ChangeLog:
* gcc.target/i386/pr112325-1.c: New test.
* gcc.target/i386/pr112325-2.c: New test.
---
gcc/config/i386/sse.md | 48 ++++++++-
gcc/testsuite/gcc.target/i386/pr112325-1.c | 116 +++++++++++++++++++++
gcc/testsuite/gcc.target/i386/pr112325-2.c | 38 +++++++
3 files changed, 199 insertions(+), 3 deletions(-)
create mode 100644 gcc/testsuite/gcc.target/i386/pr112325-1.c
create mode 100644 gcc/testsuite/gcc.target/i386/pr112325-2.c
diff --git a/gcc/config/i386/sse.md b/gcc/config/i386/sse.md
index d250a6cb802..f94a77d0b6d 100644
--- a/gcc/config/i386/sse.md
+++ b/gcc/config/i386/sse.md
@@ -3417,7 +3417,9 @@ (define_insn "sse3_h<insn>v4sf3"
(define_mode_iterator REDUC_SSE_PLUS_MODE
[(V2DF "TARGET_SSE") (V4SF "TARGET_SSE")
- (V8HF "TARGET_AVX512FP16 && TARGET_AVX512VL")])
+ (V8HF "TARGET_AVX512FP16 && TARGET_AVX512VL")
+ (V8HI "TARGET_SSE2") (V4SI "TARGET_SSE2")
+ (V2DI "TARGET_SSE2")])
(define_expand "reduc_plus_scal_<mode>"
[(plus:REDUC_SSE_PLUS_MODE
@@ -3458,8 +3460,12 @@ (define_mode_iterator REDUC_PLUS_MODE
(V8DF "TARGET_AVX512F && TARGET_EVEX512")
(V16SF "TARGET_AVX512F && TARGET_EVEX512")
(V32HF "TARGET_AVX512FP16 && TARGET_AVX512VL && TARGET_EVEX512")
- (V32QI "TARGET_AVX")
- (V64QI "TARGET_AVX512F && TARGET_EVEX512")])
+ (V32QI "TARGET_AVX") (V16HI "TARGET_AVX")
+ (V8SI "TARGET_AVX") (V4DI "TARGET_AVX")
+ (V64QI "TARGET_AVX512F && TARGET_EVEX512")
+ (V32HI "TARGET_AVX512F && TARGET_EVEX512")
+ (V16SI "TARGET_AVX512F && TARGET_EVEX512")
+ (V8DI "TARGET_AVX512F && TARGET_EVEX512")])
(define_expand "reduc_plus_scal_<mode>"
[(plus:REDUC_PLUS_MODE
@@ -3597,6 +3603,42 @@ (define_insn
"reduces<mode><mask_scalar_name><round_saeonly_scalar_name>"
(set_attr "prefix" "evex")
(set_attr "mode" "<MODE>")])
+(define_expand "reduc_<code>_scal_<mode>"
+ [(any_logic:VI_128
+ (match_operand:<ssescalarmode> 0 "register_operand")
+ (match_operand:VI_128 1 "register_operand"))]
+ "TARGET_SSE2"
+{
+ rtx tmp = gen_reg_rtx (<MODE>mode);
+ ix86_expand_reduc (gen_<code><mode>3, tmp, operands[1]);
+ emit_insn (gen_vec_extract<mode><ssescalarmodelower> (operands[0],
+ tmp, const0_rtx));
+ DONE;
+})
+
+(define_mode_iterator REDUC_ANY_LOGIC_MODE
+ [(V32QI "TARGET_AVX") (V16HI "TARGET_AVX")
+ (V8SI "TARGET_AVX") (V4DI "TARGET_AVX")
+ (V64QI "TARGET_AVX512F && TARGET_EVEX512")
+ (V32HI "TARGET_AVX512F && TARGET_EVEX512")
+ (V16SI "TARGET_AVX512F && TARGET_EVEX512")
+ (V8DI "TARGET_AVX512F && TARGET_EVEX512")])
+
+(define_expand "reduc_<code>_scal_<mode>"
+ [(any_logic:REDUC_ANY_LOGIC_MODE
+ (match_operand:<ssescalarmode> 0 "register_operand")
+ (match_operand:REDUC_ANY_LOGIC_MODE 1 "register_operand"))]
+ ""
+{
+ rtx tmp = gen_reg_rtx (<ssehalfvecmode>mode);
+ emit_insn (gen_vec_extract_hi_<mode> (tmp, operands[1]));
+ rtx tmp2 = gen_reg_rtx (<ssehalfvecmode>mode);
+ rtx tmp3 = gen_lowpart (<ssehalfvecmode>mode, operands[1]);
+ emit_insn (gen_<code><ssehalfvecmodelower>3 (tmp2, tmp, tmp3));
+ emit_insn (gen_reduc_<code>_scal_<ssehalfvecmodelower> (operands[0], tmp2));
+ DONE;
+})
+
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; Parallel floating point comparisons
diff --git a/gcc/testsuite/gcc.target/i386/pr112325-1.c
b/gcc/testsuite/gcc.target/i386/pr112325-1.c
new file mode 100644
index 00000000000..56e20c156f1
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr112325-1.c
@@ -0,0 +1,116 @@
+/* { dg-do compile } */
+/* { dg-options "-mavx512vl -mavx512bw -O2 -mtune=generic
-mprefer-vector-width=512 -fdump-tree-slp2" } */
+/* { dg-final { scan-tree-dump-times ".REDUC_PLUS" 3 "slp2" } } */
+/* { dg-final { scan-tree-dump-times ".REDUC_IOR" 4 "slp2" } } */
+
+int
+__attribute__((noipa))
+plus_v4si (int* a)
+{
+ int sum = 0;
+ sum += a[0];
+ sum += a[1];
+ sum += a[2];
+ sum += a[3];
+ return sum;
+}
+
+short
+__attribute__((noipa))
+plus_v8hi (short* a)
+{
+ short sum = 0;
+ sum += a[0];
+ sum += a[1];
+ sum += a[2];
+ sum += a[3];
+ sum += a[4];
+ sum += a[5];
+ sum += a[6];
+ sum += a[7];
+ return sum;
+}
+
+long long
+__attribute__((noipa))
+plus_v8di (long long* a)
+{
+ long long sum = 0;
+ sum += a[0];
+ sum += a[1];
+ sum += a[2];
+ sum += a[3];
+ sum += a[4];
+ sum += a[5];
+ sum += a[6];
+ sum += a[7];
+ return sum;
+}
+
+int
+__attribute__((noipa))
+ior_v4si (int* a)
+{
+ int sum = 0;
+ sum |= a[0];
+ sum |= a[1];
+ sum |= a[2];
+ sum |= a[3];
+ return sum;
+}
+
+short
+__attribute__((noipa))
+ior_v8hi (short* a)
+{
+ short sum = 0;
+ sum |= a[0];
+ sum |= a[1];
+ sum |= a[2];
+ sum |= a[3];
+ sum |= a[4];
+ sum |= a[5];
+ sum |= a[6];
+ sum |= a[7];
+ return sum;
+}
+
+long long
+__attribute__((noipa))
+ior_v8di (long long* a)
+{
+ long long sum = 0;
+ sum |= a[0];
+ sum |= a[1];
+ sum |= a[2];
+ sum |= a[3];
+ sum |= a[4];
+ sum |= a[5];
+ sum |= a[6];
+ sum |= a[7];
+ return sum;
+}
+
+char
+__attribute__((noipa))
+ior_v16qi (char* a)
+{
+ char sum = 0;
+ sum |= a[0];
+ sum |= a[1];
+ sum |= a[2];
+ sum |= a[3];
+ sum |= a[4];
+ sum |= a[5];
+ sum |= a[6];
+ sum |= a[7];
+ sum |= a[8];
+ sum |= a[9];
+ sum |= a[10];
+ sum |= a[11];
+ sum |= a[12];
+ sum |= a[13];
+ sum |= a[14];
+ sum |= a[15];
+ return sum;
+}
diff --git a/gcc/testsuite/gcc.target/i386/pr112325-2.c
b/gcc/testsuite/gcc.target/i386/pr112325-2.c
new file mode 100644
index 00000000000..650006b0bd9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/i386/pr112325-2.c
@@ -0,0 +1,38 @@
+/* { dg-do run } */
+/* { dg-options "-O2 -msse2" } */
+/* { dg-require-effective-target sse2 } */
+
+#include "sse2-check.h"
+#include "pr112325-1.c"
+
+static void
+sse2_test (void)
+{
+ int d[4] = { 3, 11, 22, 89};
+ short w[8] = { 3, 11, 22, 89, 4, 9, 13, 7};
+ char b[16] = { 3, 11, 22, 89, 4, 9, 13, 7, 2, 6, 5, 111, 163, 88, 11, 235};
+ long long q[8] = { 3, 11, 22, 89, 4, 9, 13, 7};
+
+ /* if (plus_v4si (d) != 125) */
+ /* __builtin_abort (); */
+
+ /* if (plus_v8hi (w) != 158) */
+ /* __builtin_abort (); */
+
+ /* if (plus_v8di (q) != 158) */
+ /* __builtin_abort (); */
+
+ /* if (ior_v4si (d) != 95) */
+ /* __builtin_abort (); */
+
+ /* if (ior_v8hi (w) != 95) */
+ /* __builtin_abort (); */
+
+ /* if (ior_v16qi (b) != (char)255) */
+ /* __builtin_abort (); */
+
+ if (ior_v8di (q) != 95)
+ __builtin_abort ();
+
+ return;
+}
--
2.31.1
