[PATCH] RISC-V: Put jump table in text for large code model

[Kito Cheng]

Large code model assume the data or rodata may put far away from
text section.  So we need to put jump table in text section for
large code model.

gcc/ChangeLog:

        * config/riscv/riscv.h (JUMP_TABLES_IN_TEXT_SECTION): Check if
        large code model.

gcc/testsuite/ChangeLog:

        * gcc.target/riscv/jump-table-large-code-model.c: New test.
---
 gcc/config/riscv/riscv.h                      |  2 +-
 .../riscv/jump-table-large-code-model.c       | 24 +++++++++++++++++++
 2 files changed, 25 insertions(+), 1 deletion(-)
 create mode 100644 gcc/testsuite/gcc.target/riscv/jump-table-large-code-model.c

diff --git a/gcc/config/riscv/riscv.h b/gcc/config/riscv/riscv.h
index 2bcabd03517..2759a4cb1c9 100644
--- a/gcc/config/riscv/riscv.h
+++ b/gcc/config/riscv/riscv.h
@@ -888,7 +888,7 @@ extern enum riscv_cc get_riscv_cc (const rtx use);
 #define ASM_OUTPUT_OPCODE(STREAM, PTR) \
   (PTR) = riscv_asm_output_opcode(STREAM, PTR)
 
-#define JUMP_TABLES_IN_TEXT_SECTION 0
+#define JUMP_TABLES_IN_TEXT_SECTION (riscv_cmodel == CM_LARGE)
 #define CASE_VECTOR_MODE SImode
 #define CASE_VECTOR_PC_RELATIVE (riscv_cmodel != CM_MEDLOW)
 
diff --git a/gcc/testsuite/gcc.target/riscv/jump-table-large-code-model.c 
b/gcc/testsuite/gcc.target/riscv/jump-table-large-code-model.c
new file mode 100644
index 00000000000..1ee7f6c07d3
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/jump-table-large-code-model.c
@@ -0,0 +1,24 @@
+/* { dg-do compile } */
+/* { dg-options "-march=rv64gc -mabi=lp64 -mcmodel=large" } */
+
+int foo(int x, int y)
+{
+  switch(x){
+  case 0:
+    return 123 + y;
+  case 1:
+    return 456 + y;
+  case 2:
+    return 789 - y;
+  case 3:
+    return 12 * y;
+  case 4:
+    return 13 % y;
+  case 5:
+    return 11 *y;
+  }
+  return 0;
+}
+
+
+/* { dg-final { scan-assembler-not "\.section  \.rodata" } } */
-- 
2.34.1