[gcc r17-2377] RISC-V: Add test cases for vsext.vf8 reg overlap

https://gcc.gnu.org/g:f1c03c18ef6f229bffb6da1834b80031b72fbc84

commit r17-2377-gf1c03c18ef6f229bffb6da1834b80031b72fbc84
Author: Pan Li <[email protected]>
Date:   Sat Jul 11 22:34:29 2026 +0800

    RISC-V: Add test cases for vsext.vf8 reg overlap
    
    Add test cases for vsext.vf8 register group overlap, please
    note it is not overlap as much as possible.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-m1.c: New test.
            * gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-mf2.c: New test.
            * gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-mf4.c: New test.
            * gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-mf8.c: New test.
    
    Signed-off-by: Pan Li <[email protected]>

Diff:
---
 .../riscv/rvv/autovec/group_overlap/vsext_vf8-i8-m1.c | 17 +++++++++++++++++
 .../rvv/autovec/group_overlap/vsext_vf8-i8-mf2.c      | 19 +++++++++++++++++++
 .../rvv/autovec/group_overlap/vsext_vf8-i8-mf4.c      | 19 +++++++++++++++++++
 .../rvv/autovec/group_overlap/vsext_vf8-i8-mf8.c      | 19 +++++++++++++++++++
 4 files changed, 74 insertions(+)

diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-m1.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-m1.c
new file mode 100644
index 000000000000..ad9c7550c0a2
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-m1.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d" } */
+
+#include "group_overlap.h"
+
+DEF_GROUP_OVERLAP_UNARY_0(
+  __riscv_vsetvlmax_e8m1,
+  vint8m1_t,
+  vint64m8_t,
+  __riscv_vle8_v_i8m1,
+  __riscv_vsext_vf8_i64m8,
+  __riscv_vse64_v_i64m8,
+  vsext_vf,
+  LOOP_UNARY_BODY_X4)
+
+/* { dg-final { scan-assembler-times {vsext\.vf8\s+v0,v7([^0-9]|$)} 1 } } */
+/* { dg-final { scan-assembler-times {vsext\.vf8\s+v8,v15} 1 } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-mf2.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-mf2.c
new file mode 100644
index 000000000000..9dc12bf12689
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-mf2.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d" } */
+
+#include "group_overlap.h"
+
+DEF_GROUP_OVERLAP_UNARY_0(
+  __riscv_vsetvlmax_e8m1,
+  vint8mf2_t,
+  vint64m4_t,
+  __riscv_vle8_v_i8mf2,
+  __riscv_vsext_vf8_i64m4,
+  __riscv_vse64_v_i64m4,
+  vsext_vf,
+  LOOP_UNARY_BODY_X8)
+
+/* { dg-final { scan-assembler-not {vsext\.vf8\s+v0,v7([^0-9]|$)} } } */
+/* { dg-final { scan-assembler-not {vsext\.vf8\s+v8,v15} } } */
+/* { dg-final { scan-assembler-not {vsext\.vf8\s+v16,v23} } } */
+/* { dg-final { scan-assembler-not {vsext\.vf8\s+v24,v31} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-mf4.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-mf4.c
new file mode 100644
index 000000000000..8834c30f5cd4
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-mf4.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d" } */
+
+#include "group_overlap.h"
+
+DEF_GROUP_OVERLAP_UNARY_0(
+  __riscv_vsetvlmax_e8m1,
+  vint8mf4_t,
+  vint64m2_t,
+  __riscv_vle8_v_i8mf4,
+  __riscv_vsext_vf8_i64m2,
+  __riscv_vse64_v_i64m2,
+  vsext_vf,
+  LOOP_UNARY_BODY_X16)
+
+/* { dg-final { scan-assembler-not {vsext\.vf8\s+v0,v7([^0-9]|$)} } } */
+/* { dg-final { scan-assembler-not {vsext\.vf8\s+v8,v15} } } */
+/* { dg-final { scan-assembler-not {vsext\.vf8\s+v16,v23} } } */
+/* { dg-final { scan-assembler-not {vsext\.vf8\s+v24,v31} } } */
diff --git a/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-mf8.c b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-mf8.c
new file mode 100644
index 000000000000..0fe4c6450e26
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vsext_vf8-i8-mf8.c
@@ -0,0 +1,19 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d" } */
+
+#include "group_overlap.h"
+
+DEF_GROUP_OVERLAP_UNARY_0(
+  __riscv_vsetvlmax_e8m1,
+  vint8mf8_t,
+  vint64m1_t,
+  __riscv_vle8_v_i8mf8,
+  __riscv_vsext_vf8_i64m1,
+  __riscv_vse64_v_i64m1,
+  vsext_vf,
+  LOOP_UNARY_BODY_X16)
+
+/* { dg-final { scan-assembler-not {vsext\.vf8\s+v0,v7([^0-9]|$)} } } */
+/* { dg-final { scan-assembler-not {vsext\.vf8\s+v8,v15} } } */
+/* { dg-final { scan-assembler-not {vsext\.vf8\s+v16,v23} } } */
+/* { dg-final { scan-assembler-not {vsext\.vf8\s+v24,v31} } } */