https://gcc.gnu.org/g:e45e4854b81b9fe75ebf2c0af7f9004cb1ea87d0

commit r17-2294-ge45e4854b81b9fe75ebf2c0af7f9004cb1ea87d0
Author: Pan Li <[email protected]>
Date:   Wed Jul 8 13:57:04 2026 +0800

    RISC-V: Add test cases for vzext.vf4 reg overlap
    
    Add test cases for vzext.vf4 register group overlap, please
    note it is not overlap as much as possible.
    
    gcc/testsuite/ChangeLog:
    
            * gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-m1.c: 
New test.
            * gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-m2.c: 
New test.
            * gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-mf2.c: 
New test.
            * gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-mf4.c: 
New test.
            * gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-m1.c: New 
test.
            * gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-m2.c: New 
test.
            * gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-mf2.c: 
New test.
            * gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-mf4.c: 
New test.
            * gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-mf8.c: 
New test.
    
    Signed-off-by: Pan Li <[email protected]>

Diff:
---
 .../rvv/autovec/group_overlap/vzext_vf4-u16-m1.c   | 17 ++++++++++++++++
 .../rvv/autovec/group_overlap/vzext_vf4-u16-m2.c   | 17 ++++++++++++++++
 .../rvv/autovec/group_overlap/vzext_vf4-u16-mf2.c  | 23 ++++++++++++++++++++++
 .../rvv/autovec/group_overlap/vzext_vf4-u16-mf4.c  | 23 ++++++++++++++++++++++
 .../rvv/autovec/group_overlap/vzext_vf4-u8-m1.c    | 17 ++++++++++++++++
 .../rvv/autovec/group_overlap/vzext_vf4-u8-m2.c    | 17 ++++++++++++++++
 .../rvv/autovec/group_overlap/vzext_vf4-u8-mf2.c   | 23 ++++++++++++++++++++++
 .../rvv/autovec/group_overlap/vzext_vf4-u8-mf4.c   | 23 ++++++++++++++++++++++
 .../rvv/autovec/group_overlap/vzext_vf4-u8-mf8.c   | 23 ++++++++++++++++++++++
 9 files changed, 183 insertions(+)

diff --git 
a/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-m1.c 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-m1.c
new file mode 100644
index 000000000000..cce2d1a94266
--- /dev/null
+++ 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-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_e16m1,
+  vuint16m1_t,
+  vuint64m4_t,
+  __riscv_vle16_v_u16m1,
+  __riscv_vzext_vf4_u64m4,
+  __riscv_vse64_v_u64m4,
+  vzext_vf,
+  LOOP_UNARY_BODY_X8)
+
+/* { dg-final { scan-assembler-times {vzext\.vf4\s+v0,v3([^0-9]|$)} 1 } } */
+/* { dg-final { scan-assembler-times {vzext\.vf4\s+v4,v7} 1 } } */
diff --git 
a/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-m2.c 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-m2.c
new file mode 100644
index 000000000000..845917e4eea6
--- /dev/null
+++ 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-m2.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d" } */
+
+#include "group_overlap.h"
+
+DEF_GROUP_OVERLAP_UNARY_0(
+  __riscv_vsetvlmax_e16m2,
+  vuint16m2_t,
+  vuint64m8_t,
+  __riscv_vle16_v_u16m2,
+  __riscv_vzext_vf4_u64m8,
+  __riscv_vse64_v_u64m8,
+  vzext_vf,
+  LOOP_UNARY_BODY_X4)
+
+/* { dg-final { scan-assembler-times {vzext\.vf4\s+v0,v6} 1 } } */
+/* { dg-final { scan-assembler-times {vzext\.vf4\s+v8,v14} 1 } } */
diff --git 
a/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-mf2.c 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-mf2.c
new file mode 100644
index 000000000000..c56b984c5c8b
--- /dev/null
+++ 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-mf2.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d" } */
+
+#include "group_overlap.h"
+
+DEF_GROUP_OVERLAP_UNARY_0(
+  __riscv_vsetvlmax_e16m1,
+  vuint16mf2_t,
+  vuint64m2_t,
+  __riscv_vle16_v_u16mf2,
+  __riscv_vzext_vf4_u64m2,
+  __riscv_vse64_v_u64m2,
+  vzext_vf,
+  LOOP_UNARY_BODY_X16)
+
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v0,v3([^0-9]|$)} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v4,v7} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v8,v11} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v12,v15} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v16,v19} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v20,v23} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v24,v27} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v28,v31} } } */
diff --git 
a/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-mf4.c 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-mf4.c
new file mode 100644
index 000000000000..055839b8e947
--- /dev/null
+++ 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u16-mf4.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d" } */
+
+#include "group_overlap.h"
+
+DEF_GROUP_OVERLAP_UNARY_0(
+  __riscv_vsetvlmax_e16m1,
+  vuint16mf4_t,
+  vuint64m1_t,
+  __riscv_vle16_v_u16mf4,
+  __riscv_vzext_vf4_u64m1,
+  __riscv_vse64_v_u64m1,
+  vzext_vf,
+  LOOP_UNARY_BODY_X16)
+
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v0,v3([^0-9]|$)} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v4,v7} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v8,v11} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v12,v15} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v16,v19} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v20,v23} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v24,v27} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v28,v31} } } */
diff --git 
a/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-m1.c 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-m1.c
new file mode 100644
index 000000000000..525be7621a4d
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-m1.c
@@ -0,0 +1,17 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d" } */
+
+#include "group_overlap.h"
+
+DEF_GROUP_OVERLAP_UNARY_0(
+  __riscv_vsetvlmax_e8m1,
+  vuint8m1_t,
+  vuint32m4_t,
+  __riscv_vle8_v_u8m1,
+  __riscv_vzext_vf4_u32m4,
+  __riscv_vse32_v_u32m4,
+  vzext_vf,
+  LOOP_UNARY_BODY_X8)
+
+/* { dg-final { scan-assembler-times {vzext\.vf4\s+v0,v3([^0-9]|$)} 1 } } */
+/* { dg-final { scan-assembler-times {vzext\.vf4\s+v4,v7} 1 } } */
diff --git 
a/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-m2.c 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-m2.c
new file mode 100644
index 000000000000..159808de53a9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-m2.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_e8m2,
+  vuint8m2_t,
+  vuint32m8_t,
+  __riscv_vle8_v_u8m2,
+  __riscv_vzext_vf4_u32m8,
+  __riscv_vse32_v_u32m8,
+  vzext_vf,
+  LOOP_UNARY_BODY_X4)
+
+/* { dg-final { scan-assembler-times {vzext\.vf4\s+v0,v6} 1 } } */
+/* { dg-final { scan-assembler-times {vzext\.vf4\s+v8,v14} 1 } } */
diff --git 
a/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-mf2.c 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-mf2.c
new file mode 100644
index 000000000000..9188968bb950
--- /dev/null
+++ 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-mf2.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d" } */
+
+#include "group_overlap.h"
+
+DEF_GROUP_OVERLAP_UNARY_0(
+  __riscv_vsetvlmax_e8m1,
+  vuint8mf2_t,
+  vuint32m2_t,
+  __riscv_vle8_v_u8mf2,
+  __riscv_vzext_vf4_u32m2,
+  __riscv_vse32_v_u32m2,
+  vzext_vf,
+  LOOP_UNARY_BODY_X16)
+
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v0,v3([^0-9]|$)} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v4,v7} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v8,v11} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v12,v15} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v16,v19} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v20,v23} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v24,v27} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v28,v31} } } */
diff --git 
a/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-mf4.c 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-mf4.c
new file mode 100644
index 000000000000..b5d233b5d6e0
--- /dev/null
+++ 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-mf4.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d" } */
+
+#include "group_overlap.h"
+
+DEF_GROUP_OVERLAP_UNARY_0(
+  __riscv_vsetvlmax_e8m1,
+  vuint8mf4_t,
+  vuint32m1_t,
+  __riscv_vle8_v_u8mf4,
+  __riscv_vzext_vf4_u32m1,
+  __riscv_vse32_v_u32m1,
+  vzext_vf,
+  LOOP_UNARY_BODY_X16)
+
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v0,v3([^0-9]|$)} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v4,v7} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v8,v11} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v12,v15} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v16,v19} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v20,v23} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v24,v27} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v28,v31} } } */
diff --git 
a/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-mf8.c 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-mf8.c
new file mode 100644
index 000000000000..a8aab4cfc0e8
--- /dev/null
+++ 
b/gcc/testsuite/gcc.target/riscv/rvv/autovec/group_overlap/vzext_vf4-u8-mf8.c
@@ -0,0 +1,23 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gcv -mabi=lp64d" } */
+
+#include "group_overlap.h"
+
+DEF_GROUP_OVERLAP_UNARY_0(
+  __riscv_vsetvlmax_e8m1,
+  vuint8mf8_t,
+  vuint32mf2_t,
+  __riscv_vle8_v_u8mf8,
+  __riscv_vzext_vf4_u32mf2,
+  __riscv_vse32_v_u32mf2,
+  vzext_vf,
+  LOOP_UNARY_BODY_X16)
+
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v0,v3([^0-9]|$)} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v4,v7} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v8,v11} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v12,v15} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v16,v19} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v20,v23} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v24,v27} } } */
+/* { dg-final { scan-assembler-not {vzext\.vf4\s+v28,v31} } } */

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