On Mon, Oct 17, 2022 at 7:57 PM Takayuki 'January June' Suwa
<jjsuwa_sys3...@yahoo.co.jp> wrote:
> On 2022/10/16 14:03, Max Filippov wrote:
> > There's also the following runtime failures, but only on call0
> > configuration:
> >
> > +FAIL: gcc.c-torture/execute/20010122-1.c -O1 execution test
> > +FAIL: gcc.c-torture/execute/20010122-1.c -O2 execution test
> > +FAIL: gcc.c-torture/execute/20010122-1.c -O3 -g execution test
> > +FAIL: gcc.c-torture/execute/20010122-1.c -Os execution test
> > +FAIL: gcc.c-torture/execute/20010122-1.c -O2 -flto
> > -fno-use-linker-plugin -flto-partition=none execution test
>
> both assembler outputs with and without this patch are identical on my side
Interesting. In -O1 test I see the following difference that is going to affect
the return value of the corresponding functions:
--- gcc-13-3308-gb4a4c6382b14-call0-le/20010122-1.s 2022-10-17
20:07:32.390363204 -0700
+++ gcc-13-3309-g851636ecd015-call0-le/20010122-1.s 2022-10-17
20:06:36.613785546 -0700
@@ -143,13 +143,10 @@
test2:
addi sp, sp, -16
s32i.n a0, sp, 12
- s32i.n a12, sp, 8
- mov.n a12, a0
l32r a2, .LC6
callx0 a2
- mov.n a2, a12
+ mov.n a2, a0
l32i.n a0, sp, 12
- l32i.n a12, sp, 8
addi sp, sp, 16
ret.n
.size test2, .-test2
@@ -161,13 +158,10 @@
test3:
addi sp, sp, -16
s32i.n a0, sp, 12
- s32i.n a12, sp, 8
- mov.n a12, a0
l32r a2, .LC7
callx0 a2
- mov.n a2, a12
+ mov.n a2, a0
l32i.n a0, sp, 12
- l32i.n a12, sp, 8
addi sp, sp, 16
ret.n
.size test3, .-test3
@@ -258,14 +252,11 @@
test8:
addi sp, sp, -16
s32i.n a0, sp, 12
- s32i.n a12, sp, 8
- mov.n a12, a0
l32r a2, .LC12
callx0 a2
l32r a2, .LC13
- s32i.n a12, a2, 0
+ s32i.n a0, a2, 0
l32i.n a0, sp, 12
- l32i.n a12, sp, 8
addi sp, sp, 16
ret.n
.size test8, .-test8
--
Thanks.
-- Max
