On Wed, 2024-06-26 at 07:22 -0600, Jeff Law wrote:
> Surya's recent patch to IRA improves the code for sh/pr54602-1.c
> slightly. Specifically it's able to eliminate a save/restore in the
> prologue/epilogue and a bit of register shuffling.
>
> As a result there literally aren't any insns that can be used to fill
> the delay slot of the return, so a nop gets emitted and the test fails.
>
> Given there literally aren't any insns to move into the delay slot, the
> best course of action is to just drop the test.
>
> Pushed to the trunk.
>
> Jeff
I can't reproduce what you are saying.
Which triplet and flags is your test setup using?
For this test case, GCC 13 with -m4 -ml -O1 -fno-pic:
_test01:
mov.l r8,@-r15
sts.l pr,@-r15
mov.l .L3,r0
jsr @r0
mov r6,r8
add r8,r0
lds.l @r15+,pr
rts
mov.l @r15+,r8
.L3:
.long _test00
current GCC master branch with -m4 -ml -O1 -fno-pic:
_test00:
mov.l r8,@-r15
sts.l pr,@-r15
mov.l .L3,r0
jsr @r0
mov r6,r8
add r8,r0
lds.l @r15+,pr
rts
mov.l @r15+,r8
.L4:
.align 2
.L3:
.long _test01
Best regards,
Oleg Endo
