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* [Bug lto/63607] New: run fail with -flto -mfloat-abi=softfp for armeb-linux-gnueabi-gcc @ 2014-10-21 7:58 fei.yang0953 at gmail dot com 2014-10-21 8:33 ` [Bug lto/63607] " rguenth at gcc dot gnu.org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: fei.yang0953 at gmail dot com @ 2014-10-21 7:58 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63607 Bug ID: 63607 Summary: run fail with -flto -mfloat-abi=softfp for armeb-linux-gnueabi-gcc Product: gcc Version: 4.7.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: lto Assignee: unassigned at gcc dot gnu.org Reporter: fei.yang0953 at gmail dot com testsuite/gcc.dg/torture/stackalign/builtin-apply-4.c: /* PR tree-optimization/20076 */ /* { dg-do run } */ extern void abort (void); double foo (int arg) { if (arg != 116) abort(); return arg + 1; } inline double bar (int arg) { foo (arg); __builtin_return (__builtin_apply ((void (*) ()) foo, __builtin_apply_args (), 16)); } int main (int argc, char **argv) { if (bar (116) != 117.0) abort (); return 0; } Compile option: armeb-linux-gnueabi-gcc builtin-apply-4.c -static -mfloat-abi=softfp -flto Disassembly: 0000076c <main>: 76c: e92d4800 push {fp, lr} 770: e28db004 add fp, sp, #4 774: e3a02113 mov r2, #-1073741820 ; 0xc0000004 778: e30a3aaa movw r3, #43690 ; 0xaaaa 77c: e34a3aaa movt r3, #43690 ; 0xaaaa 780: e5823000 str r3, [r2] 784: e3a00074 mov r0, #116 ; 0x74 788: ebffffaa bl 638 <bar.4066> 78c: eeb06b40 vmov.f64 d6, d0 790: ed9f7b0a vldr d7, [pc, #40] ; 7c0 <main+0x54> 794: eeb46b47 vcmp.f64 d6, d7 Analysis: Return value is not passed correctly. As we can see from line 790, main gets the return value from d0 register, which is wrong as we use -mfloat-abi=softfp here. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug lto/63607] run fail with -flto -mfloat-abi=softfp for armeb-linux-gnueabi-gcc 2014-10-21 7:58 [Bug lto/63607] New: run fail with -flto -mfloat-abi=softfp for armeb-linux-gnueabi-gcc fei.yang0953 at gmail dot com @ 2014-10-21 8:33 ` rguenth at gcc dot gnu.org 2014-10-23 12:31 ` fei.yang0953 at gmail dot com ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: rguenth at gcc dot gnu.org @ 2014-10-21 8:33 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63607 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |wrong-code --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- Is -mfloat-abi=softfp properly used at LTO stage? ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug lto/63607] run fail with -flto -mfloat-abi=softfp for armeb-linux-gnueabi-gcc 2014-10-21 7:58 [Bug lto/63607] New: run fail with -flto -mfloat-abi=softfp for armeb-linux-gnueabi-gcc fei.yang0953 at gmail dot com 2014-10-21 8:33 ` [Bug lto/63607] " rguenth at gcc dot gnu.org @ 2014-10-23 12:31 ` fei.yang0953 at gmail dot com 2015-01-16 15:50 ` ramana at gcc dot gnu.org 2015-02-12 13:35 ` ramana at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: fei.yang0953 at gmail dot com @ 2014-10-23 12:31 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63607 --- Comment #2 from Fei Yang <fei.yang0953 at gmail dot com> --- (In reply to Richard Biener from comment #1) > Is -mfloat-abi=softfp properly used at LTO stage? It seems that -mfloat-abi=softfp is here for lto1: /home/lxr/install/bin/../lib/gcc/../../libexec/gcc/armeb-linux-gnueabi/4.7.1/lto1 -quiet -dumpdir ./ -dumpbase 1.wpa -mfloat-abi=softfp -march=armv7-a -mtls-dialect=gnu -mfloat-abi=softfp -march=armv7-a -mtls-dialect=gnu -auxbase cc9cih7t -O2 -version -fltrans-output-list=/tmp/ccZqlDqA.ltrans.out -fwpa -fresolution=/tmp/ccUnDlh3.res @/tmp/ccSi9hcz ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug lto/63607] run fail with -flto -mfloat-abi=softfp for armeb-linux-gnueabi-gcc 2014-10-21 7:58 [Bug lto/63607] New: run fail with -flto -mfloat-abi=softfp for armeb-linux-gnueabi-gcc fei.yang0953 at gmail dot com 2014-10-21 8:33 ` [Bug lto/63607] " rguenth at gcc dot gnu.org 2014-10-23 12:31 ` fei.yang0953 at gmail dot com @ 2015-01-16 15:50 ` ramana at gcc dot gnu.org 2015-02-12 13:35 ` ramana at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: ramana at gcc dot gnu.org @ 2015-01-16 15:50 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63607 Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |ramana at gcc dot gnu.org --- Comment #3 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> --- (In reply to Fei Yang from comment #2) > (In reply to Richard Biener from comment #1) > > Is -mfloat-abi=softfp properly used at LTO stage? > > It seems that -mfloat-abi=softfp is here for lto1: > > /home/lxr/install/bin/../lib/gcc/../../libexec/gcc/armeb-linux-gnueabi/4.7. > 1/lto1 -quiet -dumpdir ./ -dumpbase 1.wpa -mfloat-abi=softfp -march=armv7-a > -mtls-dialect=gnu -mfloat-abi=softfp -march=armv7-a -mtls-dialect=gnu > -auxbase cc9cih7t -O2 -version -fltrans-output-list=/tmp/ccZqlDqA.ltrans.out > -fwpa -fresolution=/tmp/ccUnDlh3.res @/tmp/ccSi9hcz Can you check if it occurs with 4.8 , 4.9 or trunk today ? I don't really have a big endian environment setup to reproduce this easily enough. ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug lto/63607] run fail with -flto -mfloat-abi=softfp for armeb-linux-gnueabi-gcc 2014-10-21 7:58 [Bug lto/63607] New: run fail with -flto -mfloat-abi=softfp for armeb-linux-gnueabi-gcc fei.yang0953 at gmail dot com ` (2 preceding siblings ...) 2015-01-16 15:50 ` ramana at gcc dot gnu.org @ 2015-02-12 13:35 ` ramana at gcc dot gnu.org 3 siblings, 0 replies; 5+ messages in thread From: ramana at gcc dot gnu.org @ 2015-02-12 13:35 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63607 Ramana Radhakrishnan <ramana at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P3 |P4 Status|UNCONFIRMED |WAITING Last reconfirmed| |2015-02-12 Ever confirmed|0 |1 --- Comment #4 from Ramana Radhakrishnan <ramana at gcc dot gnu.org> --- Even if confirmed this is BE related and so pushing this down to P4. ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2015-02-12 13:35 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2014-10-21 7:58 [Bug lto/63607] New: run fail with -flto -mfloat-abi=softfp for armeb-linux-gnueabi-gcc fei.yang0953 at gmail dot com 2014-10-21 8:33 ` [Bug lto/63607] " rguenth at gcc dot gnu.org 2014-10-23 12:31 ` fei.yang0953 at gmail dot com 2015-01-16 15:50 ` ramana at gcc dot gnu.org 2015-02-12 13:35 ` ramana at gcc dot gnu.org
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