From: Pan Li <pan2...@intel.com>

This patch would like to add test cases for the unsigned scalar
.SAT_TRUNC form 2.  Aka:

Form 2:
  #define DEF_SAT_U_TRUC_FMT_2(NT, WT)     \
  NT __attribute__((noinline))             \
  sat_u_truc_##WT##_to_##NT##_fmt_2 (WT x) \
  {                                        \
    WT max = (WT)(NT)-1;                   \
    return x > max ? (NT) max : (NT)x;     \
  }

DEF_SAT_U_TRUC_FMT_2 (uint32_t, uint64_t)

The below test is passed for this patch.
* The rv64gcv regression test.

gcc/testsuite/ChangeLog:

        * gcc.target/riscv/sat_arith.h: Add test helper macros.
        * gcc.target/riscv/sat_u_trunc-7.c: New test.
        * gcc.target/riscv/sat_u_trunc-8.c: New test.
        * gcc.target/riscv/sat_u_trunc-9.c: New test.
        * gcc.target/riscv/sat_u_trunc-run-7.c: New test.
        * gcc.target/riscv/sat_u_trunc-run-8.c: New test.
        * gcc.target/riscv/sat_u_trunc-run-9.c: New test.

Signed-off-by: Pan Li <pan2...@intel.com>
---
 gcc/testsuite/gcc.target/riscv/sat_arith.h    | 12 +++++++++++
 .../gcc.target/riscv/sat_u_trunc-7.c          | 17 ++++++++++++++++
 .../gcc.target/riscv/sat_u_trunc-8.c          | 20 +++++++++++++++++++
 .../gcc.target/riscv/sat_u_trunc-9.c          | 19 ++++++++++++++++++
 .../gcc.target/riscv/sat_u_trunc-run-7.c      | 16 +++++++++++++++
 .../gcc.target/riscv/sat_u_trunc-run-8.c      | 16 +++++++++++++++
 .../gcc.target/riscv/sat_u_trunc-run-9.c      | 16 +++++++++++++++
 7 files changed, 116 insertions(+)
 create mode 100644 gcc/testsuite/gcc.target/riscv/sat_u_trunc-7.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/sat_u_trunc-8.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/sat_u_trunc-9.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/sat_u_trunc-run-7.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/sat_u_trunc-run-8.c
 create mode 100644 gcc/testsuite/gcc.target/riscv/sat_u_trunc-run-9.c

diff --git a/gcc/testsuite/gcc.target/riscv/sat_arith.h 
b/gcc/testsuite/gcc.target/riscv/sat_arith.h
index 37e0a60f21b..576a4926d1f 100644
--- a/gcc/testsuite/gcc.target/riscv/sat_arith.h
+++ b/gcc/testsuite/gcc.target/riscv/sat_arith.h
@@ -227,7 +227,19 @@ sat_u_truc_##WT##_to_##NT##_fmt_1 (WT x) \
 }
 #define DEF_SAT_U_TRUC_FMT_1_WRAP(NT, WT) DEF_SAT_U_TRUC_FMT_1(NT, WT)
 
+#define DEF_SAT_U_TRUC_FMT_2(NT, WT)     \
+NT __attribute__((noinline))             \
+sat_u_truc_##WT##_to_##NT##_fmt_2 (WT x) \
+{                                        \
+  WT max = (WT)(NT)-1;                   \
+  return x > max ? (NT) max : (NT)x;     \
+}
+#define DEF_SAT_U_TRUC_FMT_2_WRAP(NT, WT) DEF_SAT_U_TRUC_FMT_2(NT, WT)
+
 #define RUN_SAT_U_TRUC_FMT_1(NT, WT, x) sat_u_truc_##WT##_to_##NT##_fmt_1 (x)
 #define RUN_SAT_U_TRUC_FMT_1_WRAP(NT, WT, x) RUN_SAT_U_TRUC_FMT_1(NT, WT, x)
 
+#define RUN_SAT_U_TRUC_FMT_2(NT, WT, x) sat_u_truc_##WT##_to_##NT##_fmt_2 (x)
+#define RUN_SAT_U_TRUC_FMT_2_WRAP(NT, WT, x) RUN_SAT_U_TRUC_FMT_2(NT, WT, x)
+
 #endif
diff --git a/gcc/testsuite/gcc.target/riscv/sat_u_trunc-7.c 
b/gcc/testsuite/gcc.target/riscv/sat_u_trunc-7.c
new file mode 100644
index 00000000000..95d513a15fb
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat_u_trunc-7.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc -mabi=lp64d -O3 -fdump-rtl-expand-details 
-fno-schedule-insns -fno-schedule-insns2" } */
+/* { dg-final { check-function-bodies "**" "" } } */
+
+#include "sat_arith.h"
+
+/*
+** sat_u_truc_uint16_t_to_uint8_t_fmt_2:
+** sltiu\s+[atx][0-9]+,\s*a0,\s*255
+** addi\s+[atx][0-9]+,\s*[atx][0-9]+,\s*-1
+** or\s+[atx][0-9]+,\s*[atx][0-9]+,\s*[atx][0-9]+
+** andi\s+[atx][0-9]+,\s*[atx][0-9]+,\s*0xff
+** ret
+*/
+DEF_SAT_U_TRUC_FMT_2(uint8_t, uint16_t)
+
+/* { dg-final { scan-rtl-dump-times ".SAT_TRUNC " 2 "expand" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/sat_u_trunc-8.c 
b/gcc/testsuite/gcc.target/riscv/sat_u_trunc-8.c
new file mode 100644
index 00000000000..f168912293d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat_u_trunc-8.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc -mabi=lp64d -O3 -fdump-rtl-expand-details 
-fno-schedule-insns -fno-schedule-insns2" } */
+/* { dg-final { check-function-bodies "**" "" } } */
+
+#include "sat_arith.h"
+
+/*
+** sat_u_truc_uint32_t_to_uint16_t_fmt_2:
+** li\s+[atx][0-9]+,\s*65536
+** addi\s+[atx][0-9]+,\s*[atx][0-9]+,\s*-1
+** sltu\s+[atx][0-9]+,\s*a0,\s*[atx][0-9]+
+** addi\s+[atx][0-9]+,\s*[atx][0-9]+,\s*-1
+** or\s+[atx][0-9]+,\s*[atx][0-9]+,\s*[atx][0-9]+
+** slli\s+a0,\s*a0,\s*48
+** srli\s+a0,\s*a0,\s*48
+** ret
+*/
+DEF_SAT_U_TRUC_FMT_2(uint16_t, uint32_t)
+
+/* { dg-final { scan-rtl-dump-times ".SAT_TRUNC " 2 "expand" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/sat_u_trunc-9.c 
b/gcc/testsuite/gcc.target/riscv/sat_u_trunc-9.c
new file mode 100644
index 00000000000..d82363d6aef
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat_u_trunc-9.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc -mabi=lp64d -O3 -fdump-rtl-expand-details 
-fno-schedule-insns -fno-schedule-insns2" } */
+/* { dg-final { check-function-bodies "**" "" } } */
+
+#include "sat_arith.h"
+
+/*
+** sat_u_truc_uint64_t_to_uint32_t_fmt_2:
+** li\s+[atx][0-9]+,\s*-1
+** srli\s+[atx][0-9]+,\s*[atx][0-9]+,\s*32
+** sltu\s+[atx][0-9]+,\s*a0,\s*[atx][0-9]+
+** addi\s+[atx][0-9]+,\s*[atx][0-9]+,\s*-1
+** or\s+[atx][0-9]+,\s*[atx][0-9]+,\s*[atx][0-9]+
+** sext.w\s+a0,\s*a0
+** ret
+*/
+DEF_SAT_U_TRUC_FMT_2(uint32_t, uint64_t)
+
+/* { dg-final { scan-rtl-dump-times ".SAT_TRUNC " 2 "expand" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/sat_u_trunc-run-7.c 
b/gcc/testsuite/gcc.target/riscv/sat_u_trunc-run-7.c
new file mode 100644
index 00000000000..b98d40fa7ec
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat_u_trunc-run-7.c
@@ -0,0 +1,16 @@
+/* { dg-do run { target { riscv_v } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "sat_arith.h"
+#include "sat_arith_data.h"
+
+#define T1 uint8_t
+#define T2 uint16_t
+
+DEF_SAT_U_TRUC_FMT_2_WRAP(T1, T2)
+
+#define DATA           TEST_UNARY_DATA_WRAP(T1, T2)
+#define T              TEST_UNARY_STRUCT_DECL(T1, T2)
+#define RUN_UNARY(x)   RUN_SAT_U_TRUC_FMT_2_WRAP(T1, T2, x)
+
+#include "scalar_sat_unary.h"
diff --git a/gcc/testsuite/gcc.target/riscv/sat_u_trunc-run-8.c 
b/gcc/testsuite/gcc.target/riscv/sat_u_trunc-run-8.c
new file mode 100644
index 00000000000..486585df7b8
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat_u_trunc-run-8.c
@@ -0,0 +1,16 @@
+/* { dg-do run { target { riscv_v } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "sat_arith.h"
+#include "sat_arith_data.h"
+
+#define T1 uint16_t
+#define T2 uint32_t
+
+DEF_SAT_U_TRUC_FMT_2_WRAP(T1, T2)
+
+#define DATA           TEST_UNARY_DATA_WRAP(T1, T2)
+#define T              TEST_UNARY_STRUCT_DECL(T1, T2)
+#define RUN_UNARY(x)   RUN_SAT_U_TRUC_FMT_2_WRAP(T1, T2, x)
+
+#include "scalar_sat_unary.h"
diff --git a/gcc/testsuite/gcc.target/riscv/sat_u_trunc-run-9.c 
b/gcc/testsuite/gcc.target/riscv/sat_u_trunc-run-9.c
new file mode 100644
index 00000000000..2099304a0be
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat_u_trunc-run-9.c
@@ -0,0 +1,16 @@
+/* { dg-do run { target { riscv_v } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "sat_arith.h"
+#include "sat_arith_data.h"
+
+#define T1 uint32_t
+#define T2 uint64_t
+
+DEF_SAT_U_TRUC_FMT_2_WRAP(T1, T2)
+
+#define DATA           TEST_UNARY_DATA_WRAP(T1, T2)
+#define T              TEST_UNARY_STRUCT_DECL(T1, T2)
+#define RUN_UNARY(x)   RUN_SAT_U_TRUC_FMT_2_WRAP(T1, T2, x)
+
+#include "scalar_sat_unary.h"
-- 
2.43.0

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