The stack pointer adjustment in interrupt epilogue is happening after
restoring the ZOL registers which is wrong. Fixing this.
gcc/
* config/arc/arc.cc (arc_expand_epilogue): Adjust the frame
pointer first when in interrupts.
gcc/testsuite/
* gcc.target/arc/interrupt-13.c: New file.
Signed-off-by: Claudiu Zissulescu <[email protected]>
---
gcc/config/arc/arc.cc | 2 +-
gcc/testsuite/gcc.target/arc/interrupt-13.c | 15 +++++++++++++++
2 files changed, 16 insertions(+), 1 deletion(-)
create mode 100644 gcc/testsuite/gcc.target/arc/interrupt-13.c
diff --git a/gcc/config/arc/arc.cc b/gcc/config/arc/arc.cc
index fbc17e684a0..77730c88e55 100644
--- a/gcc/config/arc/arc.cc
+++ b/gcc/config/arc/arc.cc
@@ -3965,7 +3965,7 @@ arc_expand_epilogue (int sibcall_p)
if (size)
emit_insn (gen_blockage ());
- if (ARC_INTERRUPT_P (fn_type) && restore_fp)
+ if (ARC_INTERRUPT_P (fn_type))
{
/* We need to restore FP before any SP operation in an
interrupt. */
diff --git a/gcc/testsuite/gcc.target/arc/interrupt-13.c
b/gcc/testsuite/gcc.target/arc/interrupt-13.c
new file mode 100644
index 00000000000..0ed8451c512
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arc/interrupt-13.c
@@ -0,0 +1,15 @@
+/* { dg-options "-O2" } */
+
+extern int foo (int *);
+
+void __attribute__((interrupt("ilink")))
+irq (void)
+{
+ struct {
+ int x0;
+ int x1;
+ } a = {1 ,2};
+ foo ((int *)&a);
+}
+
+/* { dg-final { scan-assembler "add_s\\s+sp,sp,8.*pop_s\\s+r0" } } */
--
2.30.2
