https://gcc.gnu.org/bugzilla/show_bug.cgi?id=128270
--- Comment #5 from Uroš Bizjak <ubizjak at gmail dot com> ---
Testcases:
/* PR target/128270 */
/* { dg-do compile { target lp64 } } */
/* { dg-options "-O2 -mforce-drap -mtune-ctrl=use_leave
-fasynchronous-unwind-tables" } */
void use (void *);
int
f (void)
{
char buf[64] __attribute__ ((aligned (32)));
use (buf);
return buf[0];
}
/* The DRAP prologue saves %rbp with an FP-relative DW_CFA_expression
rule, so the epilogue must restore it even within the red zone. */
/* { dg-final { scan-assembler "\\.cfi_restore 6" } } */
==========
/* PR target/128270 */
/* { dg-do compile { target lp64 } } */
/* { dg-options "-O2 -mforce-drap -mtune-ctrl=^use_leave -fasynchronous-unwind
tables" } */
void use (void *);
int
f (void)
{
char buf[64] __attribute__ ((aligned (32)));
use (buf);
return buf[0];
}
/* Same as pr128270-1.c, but exercising the "pop %rbp" epilogue path. */
/* { dg-final { scan-assembler "\\.cfi_restore 6" } } */
==========
/* PR target/128270 */
/* { dg-do compile { target lp64 } } */
/* { dg-options "-O2 -mforce-drap
-mtune-ctrl=prologue_using_move,epilogue_using_move
-fasynchronous-unwind-tables" } */
void use (void *);
int
f (void)
{
char buf[64] __attribute__ ((aligned (32)));
asm volatile ("" ::: "rbx", "r12");
use (buf);
return buf[0];
}
/* Registers saved by moves in a DRAP frame use FP-relative expression
rules, so they must be restored after "leave" as well. */
/* { dg-final { scan-assembler "\\.cfi_restore 3" } } */
/* { dg-final { scan-assembler "\\.cfi_restore 12" } } */
/* { dg-final { scan-assembler "\\.cfi_restore 6" } } */
