http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50283
--- Comment #5 from John David Anglin <danglin at gcc dot gnu.org> 2011-11-21
17:04:20 UTC ---
Regarding label placement of frame related insns, we have the following
rtl for f2:
(insn 14 2 15 (sequence [
(call_insn 5 2 11 (parallel [
(call (mem:SI (symbol_ref/v:SI ("@_Z2f3v") [flags
0x203] <function_decl 7afc7b80 f3>) [0 f3 S4 A32])
(const_int 16 [0x10]))
(clobber (reg:SI 1 %r1))
(clobber (reg:SI 2 %r2))
(use (const_int 0 [0]))
]) /test/gnu/gcc/gcc/gcc/testsuite/g++.dg/eh/simd-1.C:30
199 {call_symref}
(expr_list:REG_NORETURN (const_int 0 [0])
(nil))
(nil))
(insn/f 11 5 15 (set (reg/f:SI 30 %r30)
(plus:SI (reg/f:SI 30 %r30)
(const_int 64 [0x40]))) 111 {addsi3}
(nil))
]) /test/gnu/gcc/gcc/gcc/testsuite/g++.dg/eh/simd-1.C:30 -1
(nil))
The assembler for f2 is:
.SPACE $TEXT$
.NSUBSPA $CODE$
.align 4
.EXPORT _Z2f2v,ENTRY,PRIV_LEV=3
L$FB0002:
_Z2f2v:
.PROC
.CALLINFO FRAME=64,CALLS,SAVE_RP
.ENTRY
stw %r2,-20(%r30)
L$CFI0001:
.CALL
bl _Z2f3v,%r2
ldo 64(%r30),%r30
L$CFI0002:
nop
.EXIT
.PROCEND
L$FE0002:
L$CFI0002 is now after the call sequence whereas it used to be
before the sequence.
