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RISC-V: Fix 32-bit stack pointer alignment problem.

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gcc/
	PR 84856
	* config/riscv/riscv.c (riscv_compute_frame_info): Add calls to
	RISCV_STACK_ALIGN when using outgoing_args_size and pretend_args_size.
	Set arg_pointer_offset after using pretend_args_size.

From-SVN: r259449
This commit is contained in:
Jim Wilson 2018-04-17 21:41:07 +00:00 committed by Jim Wilson
parent cbe679a486
commit 035fc2add1
2 changed files with 12 additions and 3 deletions
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7
gcc/ChangeLog
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@ -1,3 +1,10 @@
2018-04-17 Jim Wilson <jimw@sifive.com>
PR 84856
* config/riscv/riscv.c (riscv_compute_frame_info): Add calls to
RISCV_STACK_ALIGN when using outgoing_args_size and pretend_args_size.
Set arg_pointer_offset after using pretend_args_size.
2018-04-17 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/85431

8
gcc/config/riscv/riscv.c
View File

@ -3307,7 +3307,7 @@ riscv_compute_frame_info (void)
}
/* At the bottom of the frame are any outgoing stack arguments. */
offset = crtl->outgoing_args_size;
offset = RISCV_STACK_ALIGN (crtl->outgoing_args_size);
/* Next are local stack variables. */
offset += RISCV_STACK_ALIGN (get_frame_size ());
/* The virtual frame pointer points above the local variables. */
@ -3333,9 +3333,11 @@ riscv_compute_frame_info (void)
frame->hard_frame_pointer_offset = offset;
/* Above the hard frame pointer is the callee-allocated varags save area. */
offset += RISCV_STACK_ALIGN (cfun->machine->varargs_size);
frame->arg_pointer_offset = offset;
/* Next is the callee-allocated area for pretend stack arguments. */
offset += crtl->args.pretend_args_size;
offset += RISCV_STACK_ALIGN (crtl->args.pretend_args_size);
/* Arg pointer must be below pretend args, but must be above alignment
padding. */
frame->arg_pointer_offset = offset - crtl->args.pretend_args_size;
frame->total_size = offset;
/* Next points the incoming stack pointer and any incoming arguments. */