When accumulator registers are available in a processor, they need to
be save onto stack durring interrupts. We were already doing so, but
the stack size was wrongly computed in the case other than ARC600.
gcc/
* config/arc/arc.c (arc_compute_frame_size): Remove condition when
computin checking accumulator regs.
(arc_expand_prologue): Update comments.
(arc_expand_epilogue): Likewise.
Signed-off-by: Claudiu Zissulescu <claz...@synopsys.com>
---
gcc/config/arc/arc.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
index 6de364e9ce0..3096a9bef44 100644
--- a/gcc/config/arc/arc.c
+++ b/gcc/config/arc/arc.c
@@ -2897,9 +2897,8 @@ arc_compute_frame_size (void)
cfun, TARGET_DPFP))
reg_size += UNITS_PER_WORD * 2;
- /* Check for special MLO/MHI case used by ARC600' MUL64
- extension. */
- if (arc_must_save_register (R58_REG, cfun, TARGET_MUL64_SET))
+ /* Check if R58 is used. */
+ if (arc_must_save_register (R58_REG, cfun, true))
reg_size += UNITS_PER_WORD * 2;
/* 4) Calculate extra size made up of the blink + fp size. */
@@ -3878,7 +3877,7 @@ arc_expand_prologue (void)
}
}
- /* Save ARC600' MUL64 registers. */
+ /* Save accumulator registers. */
if (arc_must_save_register (R58_REG, cfun, true))
frame_size_to_allocate -= arc_save_callee_saves (3ULL << 58,
false, false, 0, false);
@@ -3971,7 +3970,7 @@ arc_expand_epilogue (int sibcall_p)
first_offset = 0;
}
- /* Restore ARC600' MUL64 registers. */
+ /* Restore accumulator registers. */
if (arc_must_save_register (R58_REG, cfun, true))
{
rtx insn;
--
2.31.1
