------- Comment #3 from hjl dot tools at gmail dot com 2008-11-28 18:01 -------
Revision 142206 generates:
Reloads for insn # 49
Reload 0: reload_in (SI) = (reg:SI 0 ax)
reload_out (SI) = (reg:SI 1 dx [orig:62 D.2019 ] [62])
GENERAL_REGS, RELOAD_OTHER (opnum = 0)
reload_in_reg: (reg:SI 63 [ D.2018 ])
reload_out_reg: (reg:SI 1 dx [orig:62 D.2019 ] [62])
reload_reg_rtx: (reg:SI 1 dx [orig:62 D.2019 ] [62])
Reload 1: reload_in (SI) = (reg:SI 65 [ ivtmp.93 ])
GENERAL_REGS, RELOAD_FOR_INPUT (opnum = 2), optional
reload_in_reg: (reg:SI 65 [ ivtmp.93 ])
(insn 49 168 50 3 /tmp/foo.f90:6 (parallel [
(set (reg:SI 1 dx [orig:62 D.2019 ] [62])
(mult:SI (reg:SI 1 dx [orig:62 D.2019 ] [62])
(mem/c:SI (plus:SI (reg/f:SI 6 bp)
(const_int -48 [0xffffffffffffffd0])) [0 %sfp+-24
S4 A32])))
(clobber (reg:CC 17 flags))
]) 333 {*mulsi3_1} (nil))
407 movl [EMAIL PROTECTED], %edx
408 movl %gs:(%edx), %eax
409 movl %eax, -60(%ebp)
410 movl %gs:4(%edx), %ecx
411 movl %gs:16(%edx), %edi
412 movl %gs:20(%edx), %ebx
413 movl %gs:28(%edx), %eax
414 movl %gs:32(%edx), %esi
415 movl %esi, -64(%ebp)
416 movl %gs:12(%edx), %esi
417 addl $16, %esp
418 cmpl -64(%ebp), %eax
419 jg .L53
420 movl %eax, -48(%ebp)
421 movl %gs:24(%edx), %eax
422 movl %eax, -56(%ebp)
423 movl %eax, %edx
424 imull -48(%ebp), %edx
Revision 142207:
Reloads for insn # 49
Reload 0: reload_in (SI) = (reg:SI 63 [ D.2018 ])
reload_out (SI) = (reg:SI 1 dx [orig:62 D.2019 ] [62])
GENERAL_REGS, RELOAD_OTHER (opnum = 0)
reload_in_reg: (reg:SI 63 [ D.2018 ])
reload_out_reg: (reg:SI 1 dx [orig:62 D.2019 ] [62])
reload_reg_rtx: (reg:SI 1 dx [orig:62 D.2019 ] [62])
Reload 1: reload_in (SI) = (reg:SI 65 [ ivtmp.93 ])
GENERAL_REGS, RELOAD_FOR_INPUT (opnum = 2), optional
reload_in_reg: (reg:SI 65 [ ivtmp.93 ])
reload_reg_rtx: (reg:SI 2 cx [80])
(insn 49 168 50 3 /tmp/foo.f90:6 (parallel [
(set (reg:SI 1 dx [orig:62 D.2019 ] [62])
(mult:SI (reg:SI 1 dx [orig:62 D.2019 ] [62])
(reg:SI 2 cx [80])))
(clobber (reg:CC 17 flags))
]) 333 {*mulsi3_1} (nil))
Somehow IRA forgot ECX is used in insn 49 and used to load
__threadprivate2_MOD_foo:
407 movl [EMAIL PROTECTED], %ecx
408 movl %gs:(%ecx), %eax
409 movl %eax, -60(%ebp)
410 movl %gs:4(%ecx), %eax
411 movl %gs:16(%ecx), %edi
412 movl %gs:20(%ecx), %ebx
413 movl %gs:28(%ecx), %edx
414 movl %gs:32(%ecx), %esi
415 movl %esi, -64(%ebp)
416 movl %gs:12(%ecx), %esi
417 addl $16, %esp
418 cmpl -64(%ebp), %edx
419 jg .L53
420 movl %edx, -48(%ebp)
421 movl %gs:24(%ecx), %edx
422 movl %edx, -56(%ebp)
423 imull %ecx, %edx <<< ECX doesn't have content at address
-48(%ebp)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38272
