From ca73d4c80ea06087d9dd22594e5670bb15e21066 Mon Sep 17 00:00:00 2001
From: Jeff Law <jeffreyalaw@gmail.com>
Date: Tue, 22 Nov 2022 18:12:45 -0500
Subject: [PATCH] Fix recent rvv/base/spill testcase failures
he core issue is we're expecting the frame to have a constant size, but it
doesn't. So when using the to_constant method we abort.
The safest thing to do is to set no shrink-wrapping components when the
frame size is not fixed. We might be able to do better later -- iff we
know the offset to the GPRs/FPRs is fixed and fits into the appropriate
number of bits.
Bootstrapped and regression tested (C-only) on riscv64-linux-gnu. As
expected, it fixes a bucketload of failures in rvv/base/spill-*.c.
gcc/
* config/riscv/riscv.cc (riscv_get_separate_components): Do not
do shrink-wrapping for a frame with a variable size.
---
gcc/config/riscv/riscv.cc | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/gcc/config/riscv/riscv.cc b/gcc/config/riscv/riscv.cc
index 7ec4ce97e6ce..7bfc0e9f595d 100644
--- a/gcc/config/riscv/riscv.cc
+++ b/gcc/config/riscv/riscv.cc
@@ -5340,7 +5340,8 @@ riscv_get_separate_components (void)
bitmap_clear (components);
if (riscv_use_save_libcall (&cfun->machine->frame)
- || cfun->machine->interrupt_handler_p)
+ || cfun->machine->interrupt_handler_p
+ || !cfun->machine->frame.gp_sp_offset.is_constant ())
return components;
offset = cfun->machine->frame.gp_sp_offset.to_constant ();
--
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