https://gcc.gnu.org/g:51d7eac36b6eba2575fe42bce3e1caa872c391e9

commit r17-546-g51d7eac36b6eba2575fe42bce3e1caa872c391e9
Author: Pan Li <[email protected]>
Date:   Tue May 12 22:23:03 2026 +0800

    RISC-V: Add test cases for scalar unsigned SAT form 9
    
    Form 9 is supported already, add test to make sure of it.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/riscv/sat/sat_arith.h: Add form 9.
            * gcc.target/riscv/sat/sat_u_mul-10-u16.c: New test.
            * gcc.target/riscv/sat/sat_u_mul-10-u32.c: New test.
            * gcc.target/riscv/sat/sat_u_mul-10-u64.c: New test.
            * gcc.target/riscv/sat/sat_u_mul-10-u8.c: New test.
            * gcc.target/riscv/sat/sat_u_mul-run-10-u16.c: New test.
            * gcc.target/riscv/sat/sat_u_mul-run-10-u32.c: New test.
            * gcc.target/riscv/sat/sat_u_mul-run-10-u64.c: New test.
            * gcc.target/riscv/sat/sat_u_mul-run-10-u8.c: New test.
    
    Signed-off-by: Pan Li <[email protected]>

Diff:
---
 gcc/testsuite/gcc.target/riscv/sat/sat_arith.h            | 12 ++++++++++++
 gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u16.c     | 11 +++++++++++
 gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u32.c     | 11 +++++++++++
 gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u64.c     | 11 +++++++++++
 gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u8.c      | 11 +++++++++++
 gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u16.c | 15 +++++++++++++++
 gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u32.c | 15 +++++++++++++++
 gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u64.c | 15 +++++++++++++++
 gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u8.c  | 15 +++++++++++++++
 9 files changed, 116 insertions(+)

diff --git a/gcc/testsuite/gcc.target/riscv/sat/sat_arith.h 
b/gcc/testsuite/gcc.target/riscv/sat/sat_arith.h
index 92f1527da4c0..16d29c85f42b 100644
--- a/gcc/testsuite/gcc.target/riscv/sat/sat_arith.h
+++ b/gcc/testsuite/gcc.target/riscv/sat/sat_arith.h
@@ -799,4 +799,16 @@ sat_u_mul_##NT##_from_##WT##_fmt_8 (NT a, NT b) \
   sat_u_mul_##NT##_from_##WT##_fmt_8 (a, b)
 #define RUN_SAT_U_MUL_FMT_8_WRAP(NT, WT, a, b) RUN_SAT_U_MUL_FMT_8(NT, WT, a, 
b)
 
+#define DEF_SAT_U_MUL_FMT_9(T)                                 \
+T __attribute__((noinline))                                    \
+sat_u_mul_##T##_fmt_9 (T a, T b)                               \
+{                                                              \
+  T result;                                                    \
+  return __builtin_mul_overflow (a, b, &result) ? -1 : result; \
+}
+
+#define DEF_SAT_U_MUL_FMT_9_WRAP(T) DEF_SAT_U_MUL_FMT_9(T)
+#define RUN_SAT_U_MUL_FMT_9(T, a, b) sat_u_mul_##T##_fmt_9(a, b)
+#define RUN_SAT_U_MUL_FMT_9_WRAP(T, a, b) RUN_SAT_U_MUL_FMT_9(T, a, b)
+
 #endif
diff --git a/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u16.c 
b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u16.c
new file mode 100644
index 000000000000..822e847ebb4b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u16.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc -mabi=lp64d -fdump-tree-optimized" } */
+
+#include "sat_arith.h"
+
+#define T uint16_t
+
+DEF_SAT_U_MUL_FMT_9_WRAP(T)
+
+/* { dg-final { scan-tree-dump-times ".SAT_MUL" 1 "optimized" } } */
+/* { dg-final { scan-assembler-not "\.L\[0-9\]+" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u32.c 
b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u32.c
new file mode 100644
index 000000000000..699f1dd4e91b
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u32.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc -mabi=lp64d -fdump-tree-optimized" } */
+
+#include "sat_arith.h"
+
+#define T uint32_t
+
+DEF_SAT_U_MUL_FMT_9_WRAP(T)
+
+/* { dg-final { scan-tree-dump-times ".SAT_MUL" 1 "optimized" } } */
+/* { dg-final { scan-assembler-not "\.L\[0-9\]+" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u64.c 
b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u64.c
new file mode 100644
index 000000000000..1c2cddf1e93d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u64.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc -mabi=lp64d -fdump-tree-optimized" } */
+
+#include "sat_arith.h"
+
+#define T uint64_t
+
+DEF_SAT_U_MUL_FMT_9_WRAP(T)
+
+/* { dg-final { scan-tree-dump-times ".SAT_MUL" 1 "optimized" } } */
+/* { dg-final { scan-assembler-not "\.L\[0-9\]+" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u8.c 
b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u8.c
new file mode 100644
index 000000000000..78171254cf3d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-10-u8.c
@@ -0,0 +1,11 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc -mabi=lp64d -fdump-tree-optimized" } */
+
+#include "sat_arith.h"
+
+#define T uint8_t
+
+DEF_SAT_U_MUL_FMT_9_WRAP(T)
+
+/* { dg-final { scan-tree-dump-times ".SAT_MUL" 1 "optimized" } } */
+/* { dg-final { scan-assembler-not "\.L\[0-9\]+" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u16.c 
b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u16.c
new file mode 100644
index 000000000000..b0fad85cadc9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u16.c
@@ -0,0 +1,15 @@
+/* { dg-do run { target { rv32 || rv64 } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "sat_arith.h"
+#include "sat_arith_data.h"
+
+#define NT               uint16_t
+#define NAME             usmul
+#define DATA             TEST_BINARY_DATA_WRAP(NT, NAME)
+#define T                TEST_BINARY_STRUCT_DECL_WRAP(NT, NAME)
+#define RUN_BINARY(x, y) RUN_SAT_U_MUL_FMT_9_WRAP(NT, x, y)
+
+DEF_SAT_U_MUL_FMT_9_WRAP(NT)
+
+#include "scalar_sat_binary_run_xxx.h"
diff --git a/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u32.c 
b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u32.c
new file mode 100644
index 000000000000..560e253bfe5c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u32.c
@@ -0,0 +1,15 @@
+/* { dg-do run { target { rv32 || rv64 } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "sat_arith.h"
+#include "sat_arith_data.h"
+
+#define NT               uint32_t
+#define NAME             usmul
+#define DATA             TEST_BINARY_DATA_WRAP(NT, NAME)
+#define T                TEST_BINARY_STRUCT_DECL_WRAP(NT, NAME)
+#define RUN_BINARY(x, y) RUN_SAT_U_MUL_FMT_9_WRAP(NT, x, y)
+
+DEF_SAT_U_MUL_FMT_9_WRAP(NT)
+
+#include "scalar_sat_binary_run_xxx.h"
diff --git a/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u64.c 
b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u64.c
new file mode 100644
index 000000000000..84c23fd05fa3
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u64.c
@@ -0,0 +1,15 @@
+/* { dg-do run { target { rv32 || rv64 } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "sat_arith.h"
+#include "sat_arith_data.h"
+
+#define NT               uint64_t
+#define NAME             usmul
+#define DATA             TEST_BINARY_DATA_WRAP(NT, NAME)
+#define T                TEST_BINARY_STRUCT_DECL_WRAP(NT, NAME)
+#define RUN_BINARY(x, y) RUN_SAT_U_MUL_FMT_9_WRAP(NT, x, y)
+
+DEF_SAT_U_MUL_FMT_9_WRAP(NT)
+
+#include "scalar_sat_binary_run_xxx.h"
diff --git a/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u8.c 
b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u8.c
new file mode 100644
index 000000000000..7c88805526e1
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/sat/sat_u_mul-run-10-u8.c
@@ -0,0 +1,15 @@
+/* { dg-do run { target { rv32 || rv64 } } } */
+/* { dg-additional-options "-std=c99" } */
+
+#include "sat_arith.h"
+#include "sat_arith_data.h"
+
+#define NT               uint8_t
+#define NAME             usmul
+#define DATA             TEST_BINARY_DATA_WRAP(NT, NAME)
+#define T                TEST_BINARY_STRUCT_DECL_WRAP(NT, NAME)
+#define RUN_BINARY(x, y) RUN_SAT_U_MUL_FMT_9_WRAP(NT, x, y)
+
+DEF_SAT_U_MUL_FMT_9_WRAP(NT)
+
+#include "scalar_sat_binary_run_xxx.h"

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