https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96015
--- Comment #24 from Sergei Trofimovich <slyfox at inbox dot ru> ---
(In reply to Sergei Trofimovich from comment #23)
> cvise managed to shrink example down to the following:
For completeness assembly output difference is very clear now:
$ hppa2.0-unknown-linux-gnu-gcc -O2 -S ../bug_test.c -o bug.S
a:
bv %r0(%r2)
ldi 0,%r28
$ hppa2.0-unknown-linux-gnu-gcc -O2 -S ../bug_test.c -o bug.S
-fno-delayed-branch
a:
comclr,<> %r26,%r25,%r0
b,n .L11
nop
.L4:
.L12:
ldil L'.L6,%r28
ldo R'.L6(%r28),%r28
ldwx,s %r24(%r28),%r28
bv,n %r0(%r28)
.section .rodata
.align 4
.L6:
.begin_brtab
.word .L8
.word .L5
.word .L4
.word .L5
.word .L4
.word .L5
.end_brtab
.text
.L5:
ldi 10,%r28
bv,n %r0(%r2)
.L11:
ldi 0,%r28
bv,n %r0(%r2)
.L8:
ldi 1,%r28
bv,n %r0(%r2)
