* [PATCH V2] RISC-V: Add floating-point to integer conversion RVV auto-vectorization support
@ 2023-05-29 4:35 juzhe.zhong
2023-05-30 2:15 ` juzhe.zhong
0 siblings, 1 reply; 4+ messages in thread
From: juzhe.zhong @ 2023-05-29 4:35 UTC (permalink / raw)
To: gcc-patches
Cc: kito.cheng, kito.cheng, palmer, palmer, jeffreyalaw, rdapp.gcc,
Juzhe-Zhong
From: Juzhe-Zhong <juzhe.zhong@rivai.ai>
Even though we can't support floating-point operations which are depending
on FRM yet, (for example vfadd support is blocked) since the RVV intrinsic doc is not updated
and we can't support mode switching for this.
We can support floating-point to integer conversion now since it's not depending on FRM and
we don't need mode switching support for this ('rtz' conversions independent FRM).
gcc/ChangeLog:
* config/riscv/autovec.md (<optab><mode><vconvert>2): New pattern.
* config/riscv/iterators.md: New attribute.
* config/riscv/vector-iterators.md: New attribute.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c: New test.
* gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c: New test.
* gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c: New test.
* gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h: New test.
---
gcc/config/riscv/autovec.md | 23 ++++++++
gcc/config/riscv/iterators.md | 4 +-
gcc/config/riscv/vector-iterators.md | 5 ++
.../rvv/autovec/conversions/vfcvt_rtz-run.c | 52 +++++++++++++++++++
.../autovec/conversions/vfcvt_rtz-rv32gcv.c | 6 +++
.../autovec/conversions/vfcvt_rtz-rv64gcv.c | 6 +++
.../autovec/conversions/vfcvt_rtz-template.h | 15 ++++++
7 files changed, 110 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c
create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c
create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c
create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h
diff --git a/gcc/config/riscv/autovec.md b/gcc/config/riscv/autovec.md
index b24867ae4d0..3989ffb26ee 100644
--- a/gcc/config/riscv/autovec.md
+++ b/gcc/config/riscv/autovec.md
@@ -478,6 +478,29 @@
DONE;
})
+;; =========================================================================
+;; == Conversions
+;; =========================================================================
+
+;; -------------------------------------------------------------------------
+;; ---- [INT<-FP] Conversions
+;; -------------------------------------------------------------------------
+;; Includes:
+;; - vfcvt.rtz.xu.f.v
+;; - vfcvt.rtz.x.f.v
+;; -------------------------------------------------------------------------
+
+(define_expand "<optab><mode><vconvert>2"
+ [(set (match_operand:<VCONVERT> 0 "register_operand")
+ (any_fix:<VCONVERT>
+ (match_operand:VF 1 "register_operand")))]
+ "TARGET_VECTOR"
+{
+ insn_code icode = code_for_pred (<CODE>, <MODE>mode);
+ riscv_vector::emit_vlmax_insn (icode, riscv_vector::RVV_UNOP, operands);
+ DONE;
+})
+
;; =========================================================================
;; == Unary arithmetic
;; =========================================================================
diff --git a/gcc/config/riscv/iterators.md b/gcc/config/riscv/iterators.md
index 8afe98e4410..d374a10810c 100644
--- a/gcc/config/riscv/iterators.md
+++ b/gcc/config/riscv/iterators.md
@@ -225,7 +225,9 @@
(ss_minus "sssub")
(us_minus "ussub")
(sign_extend "extend")
- (zero_extend "zero_extend")])
+ (zero_extend "zero_extend")
+ (fix "fix_trunc")
+ (unsigned_fix "fixuns_trunc")])
;; <or_optab> code attributes
(define_code_attr or_optab [(ior "ior")
diff --git a/gcc/config/riscv/vector-iterators.md b/gcc/config/riscv/vector-iterators.md
index 70fb5b80b1b..937ec3c7f67 100644
--- a/gcc/config/riscv/vector-iterators.md
+++ b/gcc/config/riscv/vector-iterators.md
@@ -1208,6 +1208,11 @@
(VNx1DF "VNx1DI") (VNx2DF "VNx2DI") (VNx4DF "VNx4DI") (VNx8DF "VNx8DI") (VNx16DF "VNx16DI")
])
+(define_mode_attr vconvert [
+ (VNx1SF "vnx1si") (VNx2SF "vnx2si") (VNx4SF "vnx4si") (VNx8SF "vnx8si") (VNx16SF "vnx16si") (VNx32SF "vnx32si")
+ (VNx1DF "vnx1di") (VNx2DF "vnx2di") (VNx4DF "vnx4di") (VNx8DF "vnx8di") (VNx16DF "vnx16di")
+])
+
(define_mode_attr VNCONVERT [
(VNx1SF "VNx1HI") (VNx2SF "VNx2HI") (VNx4SF "VNx4HI") (VNx8SF "VNx8HI") (VNx16SF "VNx16HI") (VNx32SF "VNx32HI")
(VNx1DI "VNx1SF") (VNx2DI "VNx2SF") (VNx4DI "VNx4SF") (VNx8DI "VNx8SF") (VNx16DI "VNx16SF")
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c
new file mode 100644
index 00000000000..05f8d911ad7
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c
@@ -0,0 +1,52 @@
+/* { dg-do run { target { riscv_vector } } } */
+/* { dg-additional-options "-std=c99 -fno-vect-cost-model --param=riscv-autovec-preference=scalable" } */
+
+#include "vfcvt_rtz-template.h"
+
+#define RUN(TYPE1, TYPE2, NUM) \
+ TYPE1 src##TYPE1##TYPE2##NUM[NUM]; \
+ TYPE2 dst##TYPE1##TYPE2##NUM[NUM]; \
+ for (int i = 0; i < NUM; i++) \
+ { \
+ src##TYPE1##TYPE2##NUM[i] = i * 3.1315926 + 88932.947289; \
+ } \
+ vfcvt_##TYPE1##TYPE2 (dst##TYPE1##TYPE2##NUM, src##TYPE1##TYPE2##NUM, NUM); \
+ for (int i = 0; i < NUM; i++) \
+ if (dst##TYPE1##TYPE2##NUM[i] != (TYPE2) src##TYPE1##TYPE2##NUM[i]) \
+ __builtin_abort ();
+
+int
+main ()
+{
+ RUN (float, int32_t, 3)
+ RUN (float, int32_t, 4)
+ RUN (float, int32_t, 7)
+ RUN (float, int32_t, 99)
+ RUN (float, int32_t, 119)
+ RUN (float, int32_t, 128)
+ RUN (float, int32_t, 256)
+ RUN (float, int32_t, 279)
+ RUN (float, int32_t, 555)
+ RUN (float, int32_t, 1024)
+ RUN (float, int32_t, 1389)
+ RUN (float, int32_t, 2048)
+ RUN (float, int32_t, 3989)
+ RUN (float, int32_t, 4096)
+ RUN (float, int32_t, 5975)
+
+ RUN (double, int64_t, 3)
+ RUN (double, int64_t, 4)
+ RUN (double, int64_t, 7)
+ RUN (double, int64_t, 99)
+ RUN (double, int64_t, 119)
+ RUN (double, int64_t, 128)
+ RUN (double, int64_t, 256)
+ RUN (double, int64_t, 279)
+ RUN (double, int64_t, 555)
+ RUN (double, int64_t, 1024)
+ RUN (double, int64_t, 1389)
+ RUN (double, int64_t, 2048)
+ RUN (double, int64_t, 3989)
+ RUN (double, int64_t, 4096)
+ RUN (double, int64_t, 5975)
+}
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c
new file mode 100644
index 00000000000..2f84631775f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-std=c99 -fno-vect-cost-model -march=rv32gcv -mabi=ilp32d --param=riscv-autovec-preference=scalable" } */
+
+#include "vfcvt_rtz-template.h"
+
+/* { dg-final { scan-assembler-times {\tvfcvt\.rtz} 2 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c
new file mode 100644
index 00000000000..40e3e7a450d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-std=c99 -fno-vect-cost-model -march=rv64gcv -mabi=lp64d --param=riscv-autovec-preference=scalable" } */
+
+#include "vfcvt_rtz-template.h"
+
+/* { dg-final { scan-assembler-times {\tvfcvt\.rtz} 2 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h
new file mode 100644
index 00000000000..73bc1ad5591
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h
@@ -0,0 +1,15 @@
+#include <stdint-gcc.h>
+
+#define TEST(TYPE1, TYPE2) \
+ __attribute__ ((noipa)) void vfcvt_##TYPE1##TYPE2 (TYPE2 *dst, TYPE1 *a, \
+ int n) \
+ { \
+ for (int i = 0; i < n; i++) \
+ dst[i] = (TYPE1) a[i]; \
+ }
+
+#define TEST_ALL() \
+ TEST (float, int32_t) \
+ TEST (double, int64_t)
+
+TEST_ALL ()
--
2.36.3
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH V2] RISC-V: Add floating-point to integer conversion RVV auto-vectorization support
2023-05-29 4:35 [PATCH V2] RISC-V: Add floating-point to integer conversion RVV auto-vectorization support juzhe.zhong
@ 2023-05-30 2:15 ` juzhe.zhong
2023-05-30 2:17 ` Kito Cheng
0 siblings, 1 reply; 4+ messages in thread
From: juzhe.zhong @ 2023-05-30 2:15 UTC (permalink / raw)
To: 钟居哲, gcc-patches
Cc: kito.cheng, Kito.cheng, palmer, palmer, jeffreyalaw, Robin Dapp
[-- Attachment #1: Type: text/plain, Size: 9292 bytes --]
Ok for trunk ?
juzhe.zhong@rivai.ai
From: juzhe.zhong
Date: 2023-05-29 12:35
To: gcc-patches
CC: kito.cheng; kito.cheng; palmer; palmer; jeffreyalaw; rdapp.gcc; Juzhe-Zhong
Subject: [PATCH V2] RISC-V: Add floating-point to integer conversion RVV auto-vectorization support
From: Juzhe-Zhong <juzhe.zhong@rivai.ai>
Even though we can't support floating-point operations which are depending
on FRM yet, (for example vfadd support is blocked) since the RVV intrinsic doc is not updated
and we can't support mode switching for this.
We can support floating-point to integer conversion now since it's not depending on FRM and
we don't need mode switching support for this ('rtz' conversions independent FRM).
gcc/ChangeLog:
* config/riscv/autovec.md (<optab><mode><vconvert>2): New pattern.
* config/riscv/iterators.md: New attribute.
* config/riscv/vector-iterators.md: New attribute.
gcc/testsuite/ChangeLog:
* gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c: New test.
* gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c: New test.
* gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c: New test.
* gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h: New test.
---
gcc/config/riscv/autovec.md | 23 ++++++++
gcc/config/riscv/iterators.md | 4 +-
gcc/config/riscv/vector-iterators.md | 5 ++
.../rvv/autovec/conversions/vfcvt_rtz-run.c | 52 +++++++++++++++++++
.../autovec/conversions/vfcvt_rtz-rv32gcv.c | 6 +++
.../autovec/conversions/vfcvt_rtz-rv64gcv.c | 6 +++
.../autovec/conversions/vfcvt_rtz-template.h | 15 ++++++
7 files changed, 110 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c
create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c
create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c
create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h
diff --git a/gcc/config/riscv/autovec.md b/gcc/config/riscv/autovec.md
index b24867ae4d0..3989ffb26ee 100644
--- a/gcc/config/riscv/autovec.md
+++ b/gcc/config/riscv/autovec.md
@@ -478,6 +478,29 @@
DONE;
})
+;; =========================================================================
+;; == Conversions
+;; =========================================================================
+
+;; -------------------------------------------------------------------------
+;; ---- [INT<-FP] Conversions
+;; -------------------------------------------------------------------------
+;; Includes:
+;; - vfcvt.rtz.xu.f.v
+;; - vfcvt.rtz.x.f.v
+;; -------------------------------------------------------------------------
+
+(define_expand "<optab><mode><vconvert>2"
+ [(set (match_operand:<VCONVERT> 0 "register_operand")
+ (any_fix:<VCONVERT>
+ (match_operand:VF 1 "register_operand")))]
+ "TARGET_VECTOR"
+{
+ insn_code icode = code_for_pred (<CODE>, <MODE>mode);
+ riscv_vector::emit_vlmax_insn (icode, riscv_vector::RVV_UNOP, operands);
+ DONE;
+})
+
;; =========================================================================
;; == Unary arithmetic
;; =========================================================================
diff --git a/gcc/config/riscv/iterators.md b/gcc/config/riscv/iterators.md
index 8afe98e4410..d374a10810c 100644
--- a/gcc/config/riscv/iterators.md
+++ b/gcc/config/riscv/iterators.md
@@ -225,7 +225,9 @@
(ss_minus "sssub")
(us_minus "ussub")
(sign_extend "extend")
- (zero_extend "zero_extend")])
+ (zero_extend "zero_extend")
+ (fix "fix_trunc")
+ (unsigned_fix "fixuns_trunc")])
;; <or_optab> code attributes
(define_code_attr or_optab [(ior "ior")
diff --git a/gcc/config/riscv/vector-iterators.md b/gcc/config/riscv/vector-iterators.md
index 70fb5b80b1b..937ec3c7f67 100644
--- a/gcc/config/riscv/vector-iterators.md
+++ b/gcc/config/riscv/vector-iterators.md
@@ -1208,6 +1208,11 @@
(VNx1DF "VNx1DI") (VNx2DF "VNx2DI") (VNx4DF "VNx4DI") (VNx8DF "VNx8DI") (VNx16DF "VNx16DI")
])
+(define_mode_attr vconvert [
+ (VNx1SF "vnx1si") (VNx2SF "vnx2si") (VNx4SF "vnx4si") (VNx8SF "vnx8si") (VNx16SF "vnx16si") (VNx32SF "vnx32si")
+ (VNx1DF "vnx1di") (VNx2DF "vnx2di") (VNx4DF "vnx4di") (VNx8DF "vnx8di") (VNx16DF "vnx16di")
+])
+
(define_mode_attr VNCONVERT [
(VNx1SF "VNx1HI") (VNx2SF "VNx2HI") (VNx4SF "VNx4HI") (VNx8SF "VNx8HI") (VNx16SF "VNx16HI") (VNx32SF "VNx32HI")
(VNx1DI "VNx1SF") (VNx2DI "VNx2SF") (VNx4DI "VNx4SF") (VNx8DI "VNx8SF") (VNx16DI "VNx16SF")
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c
new file mode 100644
index 00000000000..05f8d911ad7
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c
@@ -0,0 +1,52 @@
+/* { dg-do run { target { riscv_vector } } } */
+/* { dg-additional-options "-std=c99 -fno-vect-cost-model --param=riscv-autovec-preference=scalable" } */
+
+#include "vfcvt_rtz-template.h"
+
+#define RUN(TYPE1, TYPE2, NUM) \
+ TYPE1 src##TYPE1##TYPE2##NUM[NUM]; \
+ TYPE2 dst##TYPE1##TYPE2##NUM[NUM]; \
+ for (int i = 0; i < NUM; i++) \
+ { \
+ src##TYPE1##TYPE2##NUM[i] = i * 3.1315926 + 88932.947289; \
+ } \
+ vfcvt_##TYPE1##TYPE2 (dst##TYPE1##TYPE2##NUM, src##TYPE1##TYPE2##NUM, NUM); \
+ for (int i = 0; i < NUM; i++) \
+ if (dst##TYPE1##TYPE2##NUM[i] != (TYPE2) src##TYPE1##TYPE2##NUM[i]) \
+ __builtin_abort ();
+
+int
+main ()
+{
+ RUN (float, int32_t, 3)
+ RUN (float, int32_t, 4)
+ RUN (float, int32_t, 7)
+ RUN (float, int32_t, 99)
+ RUN (float, int32_t, 119)
+ RUN (float, int32_t, 128)
+ RUN (float, int32_t, 256)
+ RUN (float, int32_t, 279)
+ RUN (float, int32_t, 555)
+ RUN (float, int32_t, 1024)
+ RUN (float, int32_t, 1389)
+ RUN (float, int32_t, 2048)
+ RUN (float, int32_t, 3989)
+ RUN (float, int32_t, 4096)
+ RUN (float, int32_t, 5975)
+
+ RUN (double, int64_t, 3)
+ RUN (double, int64_t, 4)
+ RUN (double, int64_t, 7)
+ RUN (double, int64_t, 99)
+ RUN (double, int64_t, 119)
+ RUN (double, int64_t, 128)
+ RUN (double, int64_t, 256)
+ RUN (double, int64_t, 279)
+ RUN (double, int64_t, 555)
+ RUN (double, int64_t, 1024)
+ RUN (double, int64_t, 1389)
+ RUN (double, int64_t, 2048)
+ RUN (double, int64_t, 3989)
+ RUN (double, int64_t, 4096)
+ RUN (double, int64_t, 5975)
+}
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c
new file mode 100644
index 00000000000..2f84631775f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-std=c99 -fno-vect-cost-model -march=rv32gcv -mabi=ilp32d --param=riscv-autovec-preference=scalable" } */
+
+#include "vfcvt_rtz-template.h"
+
+/* { dg-final { scan-assembler-times {\tvfcvt\.rtz} 2 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c
new file mode 100644
index 00000000000..40e3e7a450d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c
@@ -0,0 +1,6 @@
+/* { dg-do compile } */
+/* { dg-additional-options "-std=c99 -fno-vect-cost-model -march=rv64gcv -mabi=lp64d --param=riscv-autovec-preference=scalable" } */
+
+#include "vfcvt_rtz-template.h"
+
+/* { dg-final { scan-assembler-times {\tvfcvt\.rtz} 2 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h
new file mode 100644
index 00000000000..73bc1ad5591
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h
@@ -0,0 +1,15 @@
+#include <stdint-gcc.h>
+
+#define TEST(TYPE1, TYPE2) \
+ __attribute__ ((noipa)) void vfcvt_##TYPE1##TYPE2 (TYPE2 *dst, TYPE1 *a, \
+ int n) \
+ { \
+ for (int i = 0; i < n; i++) \
+ dst[i] = (TYPE1) a[i]; \
+ }
+
+#define TEST_ALL() \
+ TEST (float, int32_t) \
+ TEST (double, int64_t)
+
+TEST_ALL ()
--
2.36.3
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH V2] RISC-V: Add floating-point to integer conversion RVV auto-vectorization support
2023-05-30 2:15 ` juzhe.zhong
@ 2023-05-30 2:17 ` Kito Cheng
2023-05-30 2:22 ` Li, Pan2
0 siblings, 1 reply; 4+ messages in thread
From: Kito Cheng @ 2023-05-30 2:17 UTC (permalink / raw)
To: juzhe.zhong
Cc: gcc-patches, Kito.cheng, palmer, palmer, jeffreyalaw, Robin Dapp
LGTM
On Tue, May 30, 2023 at 10:15 AM juzhe.zhong@rivai.ai
<juzhe.zhong@rivai.ai> wrote:
>
> Ok for trunk ?
>
>
>
> juzhe.zhong@rivai.ai
>
> From: juzhe.zhong
> Date: 2023-05-29 12:35
> To: gcc-patches
> CC: kito.cheng; kito.cheng; palmer; palmer; jeffreyalaw; rdapp.gcc; Juzhe-Zhong
> Subject: [PATCH V2] RISC-V: Add floating-point to integer conversion RVV auto-vectorization support
> From: Juzhe-Zhong <juzhe.zhong@rivai.ai>
>
> Even though we can't support floating-point operations which are depending
> on FRM yet, (for example vfadd support is blocked) since the RVV intrinsic doc is not updated
> and we can't support mode switching for this.
>
> We can support floating-point to integer conversion now since it's not depending on FRM and
> we don't need mode switching support for this ('rtz' conversions independent FRM).
>
> gcc/ChangeLog:
>
> * config/riscv/autovec.md (<optab><mode><vconvert>2): New pattern.
> * config/riscv/iterators.md: New attribute.
> * config/riscv/vector-iterators.md: New attribute.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c: New test.
> * gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c: New test.
> * gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c: New test.
> * gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h: New test.
>
> ---
> gcc/config/riscv/autovec.md | 23 ++++++++
> gcc/config/riscv/iterators.md | 4 +-
> gcc/config/riscv/vector-iterators.md | 5 ++
> .../rvv/autovec/conversions/vfcvt_rtz-run.c | 52 +++++++++++++++++++
> .../autovec/conversions/vfcvt_rtz-rv32gcv.c | 6 +++
> .../autovec/conversions/vfcvt_rtz-rv64gcv.c | 6 +++
> .../autovec/conversions/vfcvt_rtz-template.h | 15 ++++++
> 7 files changed, 110 insertions(+), 1 deletion(-)
> create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c
> create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c
> create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c
> create mode 100644 gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h
>
> diff --git a/gcc/config/riscv/autovec.md b/gcc/config/riscv/autovec.md
> index b24867ae4d0..3989ffb26ee 100644
> --- a/gcc/config/riscv/autovec.md
> +++ b/gcc/config/riscv/autovec.md
> @@ -478,6 +478,29 @@
> DONE;
> })
> +;; =========================================================================
> +;; == Conversions
> +;; =========================================================================
> +
> +;; -------------------------------------------------------------------------
> +;; ---- [INT<-FP] Conversions
> +;; -------------------------------------------------------------------------
> +;; Includes:
> +;; - vfcvt.rtz.xu.f.v
> +;; - vfcvt.rtz.x.f.v
> +;; -------------------------------------------------------------------------
> +
> +(define_expand "<optab><mode><vconvert>2"
> + [(set (match_operand:<VCONVERT> 0 "register_operand")
> + (any_fix:<VCONVERT>
> + (match_operand:VF 1 "register_operand")))]
> + "TARGET_VECTOR"
> +{
> + insn_code icode = code_for_pred (<CODE>, <MODE>mode);
> + riscv_vector::emit_vlmax_insn (icode, riscv_vector::RVV_UNOP, operands);
> + DONE;
> +})
> +
> ;; =========================================================================
> ;; == Unary arithmetic
> ;; =========================================================================
> diff --git a/gcc/config/riscv/iterators.md b/gcc/config/riscv/iterators.md
> index 8afe98e4410..d374a10810c 100644
> --- a/gcc/config/riscv/iterators.md
> +++ b/gcc/config/riscv/iterators.md
> @@ -225,7 +225,9 @@
> (ss_minus "sssub")
> (us_minus "ussub")
> (sign_extend "extend")
> - (zero_extend "zero_extend")])
> + (zero_extend "zero_extend")
> + (fix "fix_trunc")
> + (unsigned_fix "fixuns_trunc")])
> ;; <or_optab> code attributes
> (define_code_attr or_optab [(ior "ior")
> diff --git a/gcc/config/riscv/vector-iterators.md b/gcc/config/riscv/vector-iterators.md
> index 70fb5b80b1b..937ec3c7f67 100644
> --- a/gcc/config/riscv/vector-iterators.md
> +++ b/gcc/config/riscv/vector-iterators.md
> @@ -1208,6 +1208,11 @@
> (VNx1DF "VNx1DI") (VNx2DF "VNx2DI") (VNx4DF "VNx4DI") (VNx8DF "VNx8DI") (VNx16DF "VNx16DI")
> ])
> +(define_mode_attr vconvert [
> + (VNx1SF "vnx1si") (VNx2SF "vnx2si") (VNx4SF "vnx4si") (VNx8SF "vnx8si") (VNx16SF "vnx16si") (VNx32SF "vnx32si")
> + (VNx1DF "vnx1di") (VNx2DF "vnx2di") (VNx4DF "vnx4di") (VNx8DF "vnx8di") (VNx16DF "vnx16di")
> +])
> +
> (define_mode_attr VNCONVERT [
> (VNx1SF "VNx1HI") (VNx2SF "VNx2HI") (VNx4SF "VNx4HI") (VNx8SF "VNx8HI") (VNx16SF "VNx16HI") (VNx32SF "VNx32HI")
> (VNx1DI "VNx1SF") (VNx2DI "VNx2SF") (VNx4DI "VNx4SF") (VNx8DI "VNx8SF") (VNx16DI "VNx16SF")
> diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c
> new file mode 100644
> index 00000000000..05f8d911ad7
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c
> @@ -0,0 +1,52 @@
> +/* { dg-do run { target { riscv_vector } } } */
> +/* { dg-additional-options "-std=c99 -fno-vect-cost-model --param=riscv-autovec-preference=scalable" } */
> +
> +#include "vfcvt_rtz-template.h"
> +
> +#define RUN(TYPE1, TYPE2, NUM) \
> + TYPE1 src##TYPE1##TYPE2##NUM[NUM]; \
> + TYPE2 dst##TYPE1##TYPE2##NUM[NUM]; \
> + for (int i = 0; i < NUM; i++) \
> + { \
> + src##TYPE1##TYPE2##NUM[i] = i * 3.1315926 + 88932.947289; \
> + } \
> + vfcvt_##TYPE1##TYPE2 (dst##TYPE1##TYPE2##NUM, src##TYPE1##TYPE2##NUM, NUM); \
> + for (int i = 0; i < NUM; i++) \
> + if (dst##TYPE1##TYPE2##NUM[i] != (TYPE2) src##TYPE1##TYPE2##NUM[i]) \
> + __builtin_abort ();
> +
> +int
> +main ()
> +{
> + RUN (float, int32_t, 3)
> + RUN (float, int32_t, 4)
> + RUN (float, int32_t, 7)
> + RUN (float, int32_t, 99)
> + RUN (float, int32_t, 119)
> + RUN (float, int32_t, 128)
> + RUN (float, int32_t, 256)
> + RUN (float, int32_t, 279)
> + RUN (float, int32_t, 555)
> + RUN (float, int32_t, 1024)
> + RUN (float, int32_t, 1389)
> + RUN (float, int32_t, 2048)
> + RUN (float, int32_t, 3989)
> + RUN (float, int32_t, 4096)
> + RUN (float, int32_t, 5975)
> +
> + RUN (double, int64_t, 3)
> + RUN (double, int64_t, 4)
> + RUN (double, int64_t, 7)
> + RUN (double, int64_t, 99)
> + RUN (double, int64_t, 119)
> + RUN (double, int64_t, 128)
> + RUN (double, int64_t, 256)
> + RUN (double, int64_t, 279)
> + RUN (double, int64_t, 555)
> + RUN (double, int64_t, 1024)
> + RUN (double, int64_t, 1389)
> + RUN (double, int64_t, 2048)
> + RUN (double, int64_t, 3989)
> + RUN (double, int64_t, 4096)
> + RUN (double, int64_t, 5975)
> +}
> diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c
> new file mode 100644
> index 00000000000..2f84631775f
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c
> @@ -0,0 +1,6 @@
> +/* { dg-do compile } */
> +/* { dg-additional-options "-std=c99 -fno-vect-cost-model -march=rv32gcv -mabi=ilp32d --param=riscv-autovec-preference=scalable" } */
> +
> +#include "vfcvt_rtz-template.h"
> +
> +/* { dg-final { scan-assembler-times {\tvfcvt\.rtz} 2 } } */
> diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c
> new file mode 100644
> index 00000000000..40e3e7a450d
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c
> @@ -0,0 +1,6 @@
> +/* { dg-do compile } */
> +/* { dg-additional-options "-std=c99 -fno-vect-cost-model -march=rv64gcv -mabi=lp64d --param=riscv-autovec-preference=scalable" } */
> +
> +#include "vfcvt_rtz-template.h"
> +
> +/* { dg-final { scan-assembler-times {\tvfcvt\.rtz} 2 } } */
> diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h
> new file mode 100644
> index 00000000000..73bc1ad5591
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h
> @@ -0,0 +1,15 @@
> +#include <stdint-gcc.h>
> +
> +#define TEST(TYPE1, TYPE2) \
> + __attribute__ ((noipa)) void vfcvt_##TYPE1##TYPE2 (TYPE2 *dst, TYPE1 *a, \
> + int n) \
> + { \
> + for (int i = 0; i < n; i++) \
> + dst[i] = (TYPE1) a[i]; \
> + }
> +
> +#define TEST_ALL() \
> + TEST (float, int32_t) \
> + TEST (double, int64_t)
> +
> +TEST_ALL ()
> --
> 2.36.3
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* RE: [PATCH V2] RISC-V: Add floating-point to integer conversion RVV auto-vectorization support
2023-05-30 2:17 ` Kito Cheng
@ 2023-05-30 2:22 ` Li, Pan2
0 siblings, 0 replies; 4+ messages in thread
From: Li, Pan2 @ 2023-05-30 2:22 UTC (permalink / raw)
To: Kito Cheng, juzhe.zhong
Cc: gcc-patches, Kito.cheng, palmer, palmer, jeffreyalaw, Robin Dapp
Committed, thanks Kito.
Pan
-----Original Message-----
From: Gcc-patches <gcc-patches-bounces+pan2.li=intel.com@gcc.gnu.org> On Behalf Of Kito Cheng via Gcc-patches
Sent: Tuesday, May 30, 2023 10:18 AM
To: juzhe.zhong@rivai.ai
Cc: gcc-patches <gcc-patches@gcc.gnu.org>; Kito.cheng <kito.cheng@sifive.com>; palmer <palmer@dabbelt.com>; palmer <palmer@rivosinc.com>; jeffreyalaw <jeffreyalaw@gmail.com>; Robin Dapp <rdapp.gcc@gmail.com>
Subject: Re: [PATCH V2] RISC-V: Add floating-point to integer conversion RVV auto-vectorization support
LGTM
On Tue, May 30, 2023 at 10:15 AM juzhe.zhong@rivai.ai <juzhe.zhong@rivai.ai> wrote:
>
> Ok for trunk ?
>
>
>
> juzhe.zhong@rivai.ai
>
> From: juzhe.zhong
> Date: 2023-05-29 12:35
> To: gcc-patches
> CC: kito.cheng; kito.cheng; palmer; palmer; jeffreyalaw; rdapp.gcc;
> Juzhe-Zhong
> Subject: [PATCH V2] RISC-V: Add floating-point to integer conversion
> RVV auto-vectorization support
> From: Juzhe-Zhong <juzhe.zhong@rivai.ai>
>
> Even though we can't support floating-point operations which are
> depending on FRM yet, (for example vfadd support is blocked) since the
> RVV intrinsic doc is not updated and we can't support mode switching for this.
>
> We can support floating-point to integer conversion now since it's not
> depending on FRM and we don't need mode switching support for this ('rtz' conversions independent FRM).
>
> gcc/ChangeLog:
>
> * config/riscv/autovec.md (<optab><mode><vconvert>2): New pattern.
> * config/riscv/iterators.md: New attribute.
> * config/riscv/vector-iterators.md: New attribute.
>
> gcc/testsuite/ChangeLog:
>
> * gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c: New test.
> * gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32gcv.c: New test.
> * gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64gcv.c: New test.
> * gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-template.h: New test.
>
> ---
> gcc/config/riscv/autovec.md | 23 ++++++++
> gcc/config/riscv/iterators.md | 4 +-
> gcc/config/riscv/vector-iterators.md | 5 ++
> .../rvv/autovec/conversions/vfcvt_rtz-run.c | 52 +++++++++++++++++++
> .../autovec/conversions/vfcvt_rtz-rv32gcv.c | 6 +++
> .../autovec/conversions/vfcvt_rtz-rv64gcv.c | 6 +++
> .../autovec/conversions/vfcvt_rtz-template.h | 15 ++++++
> 7 files changed, 110 insertions(+), 1 deletion(-) create mode 100644
> gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run.c
> create mode 100644
> gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv32g
> cv.c create mode 100644
> gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv64g
> cv.c create mode 100644
> gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-templ
> ate.h
>
> diff --git a/gcc/config/riscv/autovec.md b/gcc/config/riscv/autovec.md
> index b24867ae4d0..3989ffb26ee 100644
> --- a/gcc/config/riscv/autovec.md
> +++ b/gcc/config/riscv/autovec.md
> @@ -478,6 +478,29 @@
> DONE;
> })
> +;;
> +=====================================================================
> +====
> +;; == Conversions
> +;;
> +=====================================================================
> +====
> +
> +;;
> +---------------------------------------------------------------------
> +----
> +;; ---- [INT<-FP] Conversions
> +;;
> +---------------------------------------------------------------------
> +----
> +;; Includes:
> +;; - vfcvt.rtz.xu.f.v
> +;; - vfcvt.rtz.x.f.v
> +;;
> +---------------------------------------------------------------------
> +----
> +
> +(define_expand "<optab><mode><vconvert>2"
> + [(set (match_operand:<VCONVERT> 0 "register_operand")
> +(any_fix:<VCONVERT>
> + (match_operand:VF 1 "register_operand")))]
> + "TARGET_VECTOR"
> +{
> + insn_code icode = code_for_pred (<CODE>, <MODE>mode);
> + riscv_vector::emit_vlmax_insn (icode, riscv_vector::RVV_UNOP,
> +operands);
> + DONE;
> +})
> +
> ;;
> ======================================================================
> ===
> ;; == Unary arithmetic
> ;;
> ======================================================================
> === diff --git a/gcc/config/riscv/iterators.md
> b/gcc/config/riscv/iterators.md index 8afe98e4410..d374a10810c 100644
> --- a/gcc/config/riscv/iterators.md
> +++ b/gcc/config/riscv/iterators.md
> @@ -225,7 +225,9 @@
> (ss_minus "sssub")
> (us_minus "ussub")
> (sign_extend "extend")
> - (zero_extend "zero_extend")])
> + (zero_extend "zero_extend")
> + (fix "fix_trunc")
> + (unsigned_fix "fixuns_trunc")])
> ;; <or_optab> code attributes
> (define_code_attr or_optab [(ior "ior") diff --git
> a/gcc/config/riscv/vector-iterators.md
> b/gcc/config/riscv/vector-iterators.md
> index 70fb5b80b1b..937ec3c7f67 100644
> --- a/gcc/config/riscv/vector-iterators.md
> +++ b/gcc/config/riscv/vector-iterators.md
> @@ -1208,6 +1208,11 @@
> (VNx1DF "VNx1DI") (VNx2DF "VNx2DI") (VNx4DF "VNx4DI") (VNx8DF
> "VNx8DI") (VNx16DF "VNx16DI")
> ])
> +(define_mode_attr vconvert [
> + (VNx1SF "vnx1si") (VNx2SF "vnx2si") (VNx4SF "vnx4si") (VNx8SF
> +"vnx8si") (VNx16SF "vnx16si") (VNx32SF "vnx32si")
> + (VNx1DF "vnx1di") (VNx2DF "vnx2di") (VNx4DF "vnx4di") (VNx8DF
> +"vnx8di") (VNx16DF "vnx16di")
> +])
> +
> (define_mode_attr VNCONVERT [
> (VNx1SF "VNx1HI") (VNx2SF "VNx2HI") (VNx4SF "VNx4HI") (VNx8SF "VNx8HI") (VNx16SF "VNx16HI") (VNx32SF "VNx32HI")
> (VNx1DI "VNx1SF") (VNx2DI "VNx2SF") (VNx4DI "VNx4SF") (VNx8DI
> "VNx8SF") (VNx16DI "VNx16SF") diff --git
> a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run
> .c
> b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-run
> .c
> new file mode 100644
> index 00000000000..05f8d911ad7
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz
> +++ -run.c
> @@ -0,0 +1,52 @@
> +/* { dg-do run { target { riscv_vector } } } */
> +/* { dg-additional-options "-std=c99 -fno-vect-cost-model
> +--param=riscv-autovec-preference=scalable" } */
> +
> +#include "vfcvt_rtz-template.h"
> +
> +#define RUN(TYPE1, TYPE2, NUM) \
> + TYPE1 src##TYPE1##TYPE2##NUM[NUM]; \
> + TYPE2 dst##TYPE1##TYPE2##NUM[NUM]; \
> + for (int i = 0; i < NUM; i++) \
> + { \
> + src##TYPE1##TYPE2##NUM[i] = i * 3.1315926 + 88932.947289; \
> + } \
> + vfcvt_##TYPE1##TYPE2 (dst##TYPE1##TYPE2##NUM, src##TYPE1##TYPE2##NUM, NUM); \
> + for (int i = 0; i < NUM; i++) \
> + if (dst##TYPE1##TYPE2##NUM[i] != (TYPE2) src##TYPE1##TYPE2##NUM[i]) \
> + __builtin_abort ();
> +
> +int
> +main ()
> +{
> + RUN (float, int32_t, 3)
> + RUN (float, int32_t, 4)
> + RUN (float, int32_t, 7)
> + RUN (float, int32_t, 99)
> + RUN (float, int32_t, 119)
> + RUN (float, int32_t, 128)
> + RUN (float, int32_t, 256)
> + RUN (float, int32_t, 279)
> + RUN (float, int32_t, 555)
> + RUN (float, int32_t, 1024)
> + RUN (float, int32_t, 1389)
> + RUN (float, int32_t, 2048)
> + RUN (float, int32_t, 3989)
> + RUN (float, int32_t, 4096)
> + RUN (float, int32_t, 5975)
> +
> + RUN (double, int64_t, 3)
> + RUN (double, int64_t, 4)
> + RUN (double, int64_t, 7)
> + RUN (double, int64_t, 99)
> + RUN (double, int64_t, 119)
> + RUN (double, int64_t, 128)
> + RUN (double, int64_t, 256)
> + RUN (double, int64_t, 279)
> + RUN (double, int64_t, 555)
> + RUN (double, int64_t, 1024)
> + RUN (double, int64_t, 1389)
> + RUN (double, int64_t, 2048)
> + RUN (double, int64_t, 3989)
> + RUN (double, int64_t, 4096)
> + RUN (double, int64_t, 5975)
> +}
> diff --git
> a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv3
> 2gcv.c
> b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv3
> 2gcv.c
> new file mode 100644
> index 00000000000..2f84631775f
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz
> +++ -rv32gcv.c
> @@ -0,0 +1,6 @@
> +/* { dg-do compile } */
> +/* { dg-additional-options "-std=c99 -fno-vect-cost-model
> +-march=rv32gcv -mabi=ilp32d
> +--param=riscv-autovec-preference=scalable" } */
> +
> +#include "vfcvt_rtz-template.h"
> +
> +/* { dg-final { scan-assembler-times {\tvfcvt\.rtz} 2 } } */
> diff --git
> a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv6
> 4gcv.c
> b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-rv6
> 4gcv.c
> new file mode 100644
> index 00000000000..40e3e7a450d
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz
> +++ -rv64gcv.c
> @@ -0,0 +1,6 @@
> +/* { dg-do compile } */
> +/* { dg-additional-options "-std=c99 -fno-vect-cost-model
> +-march=rv64gcv -mabi=lp64d --param=riscv-autovec-preference=scalable"
> +} */
> +
> +#include "vfcvt_rtz-template.h"
> +
> +/* { dg-final { scan-assembler-times {\tvfcvt\.rtz} 2 } } */
> diff --git
> a/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-tem
> plate.h
> b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz-tem
> plate.h
> new file mode 100644
> index 00000000000..73bc1ad5591
> --- /dev/null
> +++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/conversions/vfcvt_rtz
> +++ -template.h
> @@ -0,0 +1,15 @@
> +#include <stdint-gcc.h>
> +
> +#define TEST(TYPE1, TYPE2) \
> + __attribute__ ((noipa)) void vfcvt_##TYPE1##TYPE2 (TYPE2 *dst, TYPE1 *a, \
> + int n) \
> + { \
> + for (int i = 0; i < n; i++) \
> + dst[i] = (TYPE1) a[i]; \
> + }
> +
> +#define TEST_ALL() \
> + TEST (float, int32_t) \
> + TEST (double, int64_t)
> +
> +TEST_ALL ()
> --
> 2.36.3
>
^ permalink raw reply [flat|nested] 4+ messages in thread
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2023-05-29 4:35 [PATCH V2] RISC-V: Add floating-point to integer conversion RVV auto-vectorization support juzhe.zhong
2023-05-30 2:15 ` juzhe.zhong
2023-05-30 2:17 ` Kito Cheng
2023-05-30 2:22 ` Li, Pan2
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