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* [Bug ipa/97404] New: [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d @ 2020-10-13 16:36 acoplan at gcc dot gnu.org 2020-10-13 18:19 ` [Bug ipa/97404] " marxin at gcc dot gnu.org ` (6 more replies) 0 siblings, 7 replies; 8+ messages in thread From: acoplan at gcc dot gnu.org @ 2020-10-13 16:36 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97404 Bug ID: 97404 Summary: [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d Product: gcc Version: 11.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: ipa Assignee: unassigned at gcc dot gnu.org Reporter: acoplan at gcc dot gnu.org CC: marxin at gcc dot gnu.org Target Milestone: --- AArch64 GCC miscompiles the following testcase: char a, b; long c; short d, e; long *f = &c; int g; char h(signed char i) { return 0; } static short j(short i, int k) { return i < 0 ? 0 : i >> k; } void l(void); void m(void) { e = j(d | 9766, 11); *f = e; } void l(void) { a = 5 | g; b = h(a); } int main() { m(); if (c != 4) __builtin_abort(); } when built with -O2 -fno-inline since r9-3666-g74ca1c01d02e548f32aa26f9a887dcc0730703fb. Immediately prior to this revision we have: j.constprop.0: .LFB5: .cfi_startproc tst w0, 32768 sbfx w0, w0, 11, 5 csel w0, w0, wzr, eq ret and afterwards we have: j.constprop.0: .LFB5: .cfi_startproc mov w0, 0 ret which would suggest that GCC has determined that j is always called with arguments such that it returns 0, but this is not the case. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug ipa/97404] [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d 2020-10-13 16:36 [Bug ipa/97404] New: [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d acoplan at gcc dot gnu.org @ 2020-10-13 18:19 ` marxin at gcc dot gnu.org 2020-10-14 6:20 ` rguenth at gcc dot gnu.org ` (5 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: marxin at gcc dot gnu.org @ 2020-10-13 18:19 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97404 Martin Liška <marxin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |ASSIGNED Target Milestone|--- |9.4 Ever confirmed|0 |1 Last reconfirmed| |2020-10-13 Priority|P3 |P1 --- Comment #1 from Martin Liška <marxin at gcc dot gnu.org> --- Thank you for the report, I'm gonna take a look tomorrow. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug ipa/97404] [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d 2020-10-13 16:36 [Bug ipa/97404] New: [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d acoplan at gcc dot gnu.org 2020-10-13 18:19 ` [Bug ipa/97404] " marxin at gcc dot gnu.org @ 2020-10-14 6:20 ` rguenth at gcc dot gnu.org 2020-10-16 7:44 ` cvs-commit at gcc dot gnu.org ` (4 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: rguenth at gcc dot gnu.org @ 2020-10-14 6:20 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97404 Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Priority|P1 |P2 ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug ipa/97404] [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d 2020-10-13 16:36 [Bug ipa/97404] New: [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d acoplan at gcc dot gnu.org 2020-10-13 18:19 ` [Bug ipa/97404] " marxin at gcc dot gnu.org 2020-10-14 6:20 ` rguenth at gcc dot gnu.org @ 2020-10-16 7:44 ` cvs-commit at gcc dot gnu.org 2020-10-16 7:53 ` marxin at gcc dot gnu.org ` (3 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2020-10-16 7:44 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97404 --- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The master branch has been updated by Martin Liska <marxin@gcc.gnu.org>: https://gcc.gnu.org/g:a86623902767122c71c7229150a8b8a79cbb3673 commit r11-3997-ga86623902767122c71c7229150a8b8a79cbb3673 Author: Martin Liska <mliska@suse.cz> Date: Thu Oct 15 14:57:31 2020 +0200 IPA: compare VRP types. gcc/ChangeLog: PR ipa/97404 * ipa-prop.c (struct ipa_vr_ggc_hash_traits): Compare types of VRP as we can merge ranges of different types. gcc/testsuite/ChangeLog: PR ipa/97404 * gcc.c-torture/execute/pr97404.c: New test. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug ipa/97404] [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d 2020-10-13 16:36 [Bug ipa/97404] New: [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d acoplan at gcc dot gnu.org ` (2 preceding siblings ...) 2020-10-16 7:44 ` cvs-commit at gcc dot gnu.org @ 2020-10-16 7:53 ` marxin at gcc dot gnu.org 2020-10-16 8:52 ` [Bug ipa/97404] [9/10 " cvs-commit at gcc dot gnu.org ` (2 subsequent siblings) 6 siblings, 0 replies; 8+ messages in thread From: marxin at gcc dot gnu.org @ 2020-10-16 7:53 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97404 Martin Liška <marxin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Known to work| |11.0 --- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> --- Fixed on master so far. ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug ipa/97404] [9/10 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d 2020-10-13 16:36 [Bug ipa/97404] New: [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d acoplan at gcc dot gnu.org ` (3 preceding siblings ...) 2020-10-16 7:53 ` marxin at gcc dot gnu.org @ 2020-10-16 8:52 ` cvs-commit at gcc dot gnu.org 2020-10-16 8:52 ` cvs-commit at gcc dot gnu.org 2020-10-16 8:53 ` marxin at gcc dot gnu.org 6 siblings, 0 replies; 8+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2020-10-16 8:52 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97404 --- Comment #4 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Martin Liska <marxin@gcc.gnu.org>: https://gcc.gnu.org/g:92fedd32d8568f2336050b064da50b3c6441d029 commit r10-8896-g92fedd32d8568f2336050b064da50b3c6441d029 Author: Martin Liska <mliska@suse.cz> Date: Thu Oct 15 14:57:31 2020 +0200 IPA: compare VRP types. gcc/ChangeLog: PR ipa/97404 * ipa-prop.c (struct ipa_vr_ggc_hash_traits): Compare types of VRP as we can merge ranges of different types. gcc/testsuite/ChangeLog: PR ipa/97404 * gcc.c-torture/execute/pr97404.c: New test. (cherry picked from commit a86623902767122c71c7229150a8b8a79cbb3673) ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug ipa/97404] [9/10 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d 2020-10-13 16:36 [Bug ipa/97404] New: [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d acoplan at gcc dot gnu.org ` (4 preceding siblings ...) 2020-10-16 8:52 ` [Bug ipa/97404] [9/10 " cvs-commit at gcc dot gnu.org @ 2020-10-16 8:52 ` cvs-commit at gcc dot gnu.org 2020-10-16 8:53 ` marxin at gcc dot gnu.org 6 siblings, 0 replies; 8+ messages in thread From: cvs-commit at gcc dot gnu.org @ 2020-10-16 8:52 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97404 --- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-9 branch has been updated by Martin Liska <marxin@gcc.gnu.org>: https://gcc.gnu.org/g:3faef34e9e0888ad82a115a5a7d775d299863c4f commit r9-8999-g3faef34e9e0888ad82a115a5a7d775d299863c4f Author: Martin Liska <mliska@suse.cz> Date: Thu Oct 15 14:57:31 2020 +0200 IPA: compare VRP types. gcc/ChangeLog: PR ipa/97404 * ipa-prop.c (struct ipa_vr_ggc_hash_traits): Compare types of VRP as we can merge ranges of different types. gcc/testsuite/ChangeLog: PR ipa/97404 * gcc.c-torture/execute/pr97404.c: New test. (cherry picked from commit a86623902767122c71c7229150a8b8a79cbb3673) ^ permalink raw reply [flat|nested] 8+ messages in thread
* [Bug ipa/97404] [9/10 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d 2020-10-13 16:36 [Bug ipa/97404] New: [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d acoplan at gcc dot gnu.org ` (5 preceding siblings ...) 2020-10-16 8:52 ` cvs-commit at gcc dot gnu.org @ 2020-10-16 8:53 ` marxin at gcc dot gnu.org 6 siblings, 0 replies; 8+ messages in thread From: marxin at gcc dot gnu.org @ 2020-10-16 8:53 UTC (permalink / raw) To: gcc-bugs https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97404 Martin Liška <marxin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Resolution|--- |FIXED Status|ASSIGNED |RESOLVED --- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> --- Fixed on all affected branched. ^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2020-10-16 8:53 UTC | newest] Thread overview: 8+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2020-10-13 16:36 [Bug ipa/97404] New: [9/10/11 Regression] aarch64: Wrong code since r9-3666-g74ca1c01d acoplan at gcc dot gnu.org 2020-10-13 18:19 ` [Bug ipa/97404] " marxin at gcc dot gnu.org 2020-10-14 6:20 ` rguenth at gcc dot gnu.org 2020-10-16 7:44 ` cvs-commit at gcc dot gnu.org 2020-10-16 7:53 ` marxin at gcc dot gnu.org 2020-10-16 8:52 ` [Bug ipa/97404] [9/10 " cvs-commit at gcc dot gnu.org 2020-10-16 8:52 ` cvs-commit at gcc dot gnu.org 2020-10-16 8:53 ` marxin at gcc dot gnu.org
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