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

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.

(cherry picked from commit 1d9e02bb7e0af4f3d3eaaa1a0f4961970aba5560)

diff --git a/gcc/config/riscv/riscv.h b/gcc/config/riscv/riscv.h
index 8a9fec787e4870f8c9259085e8ddd14d249e075f..9f782c9db2c8766d0ffb7accf90aa027426496f5 100644 (file)
--- a/gcc/config/riscv/riscv.h
+++ b/gcc/config/riscv/riscv.h
@@ -842,7 +842,7 @@ 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 (file)
index 0000000..1ee7f6c
--- /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" } } */