From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31256 invoked by alias); 14 Jan 2015 07:02:00 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 31191 invoked by uid 48); 14 Jan 2015 07:01:50 -0000 From: "ubizjak at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/59354] [4.8/4.9/5/Regression] Element swizzling produces invalid result with -O3 Date: Wed, 14 Jan 2015 07:02:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 4.8.2 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: ubizjak at gmail dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.8.5 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: short_desc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-01/txt/msg01119.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D59354 Uro=C5=A1 Bizjak changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|[4.8/4.9/5/Regression] |[4.8/4.9/5/Regression] |Element swizzling produces |Element swizzling produces |invalid result with -O3 |invalid result with -O3 |(tree-cunrolli pass | |problem?) | --- Comment #6 from Uro=C5=A1 Bizjak --- This is tree vectorizer problem, involving VECT_PACK_TRUNC expressions. Initializing the source array with: for (i =3D 0; i < 256; i++) a[i] =3D i; we can see the difference in the destination array: -O2 (correct): 0, 1, 2, 3, 16, 17, 18, 19, 32, 33, 34, 35, 48, 49, 50, 51, 64, 65, 66, 67,= 80, 81, 82, 83, 96, 97, 98, 99, 112, 113, 114, 115, 128, 129, 130, 131, 144, 14= 5, 146, 147, 160, 161, 162, 163, 176, 177, 178, 179, 192, 193, 194, 195, 208, = 209, 210, 211, 224, 225, 226, 227, 240, 241, 242, 243, 4, 5, 6, 7, 20, 21, 22, 2= 3, 36, 37, 38, 39, 52, 53, 54, 55, 68, 69, 70, 71, 84, 85, 86, 87, 100, 101, 1= 02, 103, 116, 117, 118, 119, 132, 133, 134, 135, 148, 149, 150, 151, 164, 165, = 166, 167, 180, 181, 182, 183, 196, 197, 198, 199, 212, 213, 214, 215, 228, 229, = 230, 231, 244, 245, 246, 247, 8, 9, 10, 11, 24, 25, 26, 27, 40, 41, 42, 43, 56, = 57, 58, 59, 72, 73, 74, 75, 88, 89, 90, 91, 104, 105, 106, 107, 120, 121, 122, = 123, 136, 137, 138, 139, 152, 153, 154, 155, 168, 169, 170, 171, 184, 185, 186, = 187, 200, 201, 202, 203, 216, 217, 218, 219, 232, 233, 234, 235, 248, 249, 250, = 251, 12, 13, 14, 15, 28, 29, 30, 31, 44, 45, 46, 47, 60, 61, 62, 63, 76, 77, 78,= 79, 92, 93, 94, 95, 108, 109, 110, 111, 124, 125, 126, 127, 140, 141, 142, 143, 156, 157, 158, 159, 172, 173, 174, 175, 188, 189, 190, 191, 204, 205, 206, = 207, 220, 221, 222, 223, 236, 237, 238, 239, 252, 253, 254, 255 -O3 (incorrect): 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 2= 1, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40,= 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60,= 61, 62, 63, 4, 5, 6, 7, 20, 21, 22, 23, 36, 37, 38, 39, 52, 53, 54, 55, 68, 69,= 70, 71, 84, 85, 86, 87, 100, 101, 102, 103, 116, 117, 118, 119, 132, 133, 134, = 135, 148, 149, 150, 151, 164, 165, 166, 167, 180, 181, 182, 183, 196, 197, 198, = 199, 212, 213, 214, 215, 228, 229, 230, 231, 244, 245, 246, 247, 8, 9, 10, 11, 2= 4, 25, 26, 27, 40, 41, 42, 43, 56, 57, 58, 59, 72, 73, 74, 75, 88, 89, 90, 91, 104, 105, 106, 107, 120, 121, 122, 123, 136, 137, 138, 139, 152, 153, 154, = 155, 168, 169, 170, 171, 184, 185, 186, 187, 200, 201, 202, 203, 216, 217, 218, = 219, 232, 233, 234, 235, 248, 249, 250, 251, 12, 13, 14, 15, 28, 29, 30, 31, 44,= 45, 46, 47, 60, 61, 62, 63, 76, 77, 78, 79, 92, 93, 94, 95, 108, 109, 110, 111, 124, 125, 126, 127, 140, 141, 142, 143, 156, 157, 158, 159, 172, 173, 174, = 175, 188, 189, 190, 191, 204, 205, 206, 207, 220, 221, 222, 223, 236, 237, 238, = 239, 252, 253, 254, 255 b[4] is already wrong. This is the beginning of the optimized dump: vect__24.6_185 =3D MEM[(unsigned int *)&a]; vect__24.7_182 =3D MEM[(unsigned int *)&a + 16B]; vect__24.8_176 =3D MEM[(unsigned int *)&a + 32B]; vect__24.9_173 =3D MEM[(unsigned int *)&a + 48B]; vect__24.10_160 =3D MEM[(unsigned int *)&a + 64B]; vect__24.11_158 =3D MEM[(unsigned int *)&a + 80B]; vect__24.12_155 =3D MEM[(unsigned int *)&a + 96B]; vect__24.13_148 =3D MEM[(unsigned int *)&a + 112B]; vect__24.14_145 =3D MEM[(unsigned int *)&a + 128B]; vect__24.15_138 =3D MEM[(unsigned int *)&a + 144B]; vect__24.16_136 =3D MEM[(unsigned int *)&a + 160B]; vect__24.17_133 =3D MEM[(unsigned int *)&a + 176B]; vect__24.18_126 =3D MEM[(unsigned int *)&a + 192B]; vect__24.19_124 =3D MEM[(unsigned int *)&a + 208B]; vect__24.20_111 =3D MEM[(unsigned int *)&a + 224B]; vect__24.21_108 =3D MEM[(unsigned int *)&a + 240B]; vect__25.23_107 =3D VEC_PACK_TRUNC_EXPR ; vect__25.23_101 =3D VEC_PACK_TRUNC_EXPR ; vect__25.23_100 =3D VEC_PACK_TRUNC_EXPR ; vect__25.23_99 =3D VEC_PACK_TRUNC_EXPR ; vect__25.23_87 =3D VEC_PACK_TRUNC_EXPR ; vect__25.23_86 =3D VEC_PACK_TRUNC_EXPR ; vect__25.23_85 =3D VEC_PACK_TRUNC_EXPR ; vect__25.23_81 =3D VEC_PACK_TRUNC_EXPR ; vect__25.22_80 =3D VEC_PACK_TRUNC_EXPR ; vect__25.22_79 =3D VEC_PACK_TRUNC_EXPR ; vect__25.22_78 =3D VEC_PACK_TRUNC_EXPR ; vect__25.22_77 =3D VEC_PACK_TRUNC_EXPR ; MEM[(unsigned char[256] *)&b] =3D vect__25.22_80; MEM[(unsigned char[256] *)&b + 16B] =3D vect__25.22_79; MEM[(unsigned char[256] *)&b + 32B] =3D vect__25.22_78; MEM[(unsigned char[256] *)&b + 48B] =3D vect__25.22_77; As can be seen, the first 64 elements of the destination array are simply truncated first 64 elements of source array. >>From gcc-bugs-return-473126-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 14 07:13:09 2015 Return-Path: Delivered-To: listarch-gcc-bugs@gcc.gnu.org Received: (qmail 6359 invoked by alias); 14 Jan 2015 07:13:08 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Delivered-To: mailing list gcc-bugs@gcc.gnu.org Received: (qmail 6295 invoked by uid 48); 14 Jan 2015 07:13:01 -0000 From: "ubizjak at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/59371] [4.8/4.9/5 Regression] Performance regression in GCC 4.8 and later versions. Date: Wed, 14 Jan 2015 07:13:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 4.9.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: ubizjak at gmail dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.8.5 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-01/txt/msg01120.txt.bz2 Content-length: 1254 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D59371 --- Comment #13 from Uro=C5=A1 Bizjak --- Difference (-O2 vs -O3) of neatly formatted results in a 16x16 array: --- res-O2.txt 2015-01-14 08:08:39.000000000 +0100 +++ res-O3.txt 2015-01-14 08:09:57.000000000 +0100 @@ -1,7 +1,7 @@ -000, 001, 002, 003, 016, 017, 018, 019, 032, 033, 034, 035, 048, 049, 050, 051, -064, 065, 066, 067, 080, 081, 082, 083, 096, 097, 098, 099, 112, 113, 114, 115, -128, 129, 130, 131, 144, 145, 146, 147, 160, 161, 162, 163, 176, 177, 178, 179, -192, 193, 194, 195, 208, 209, 210, 211, 224, 225, 226, 227, 240, 241, 242, 243, +000, 001, 002, 003, 004, 005, 006, 007, 008, 009, 010, 011, 012, 013, 014, 015, +016, 017, 018, 019, 020, 021, 022, 023, 024, 025, 026, 027, 028, 029, 030, 031, +032, 033, 034, 035, 036, 037, 038, 039, 040, 041, 042, 043, 044, 045, 046, 047, +048, 049, 050, 051, 052, 053, 054, 055, 056, 057, 058, 059, 060, 061, 062, 063, 004, 005, 006, 007, 020, 021, 022, 023, 036, 037, 038, 039, 052, 053, 054, 055, 068, 069, 070, 071, 084, 085, 086, 087, 100, 101, 102, 103, 116, 117, 118, 119, 132, 133, 134, 135, 148, 149, 150, 151, 164, 165, 166, 167, 180, 181, 182, 183, The problem is only with the first 64 elements. >>From gcc-bugs-return-473127-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 14 07:14:20 2015 Return-Path: Delivered-To: listarch-gcc-bugs@gcc.gnu.org Received: (qmail 7301 invoked by alias); 14 Jan 2015 07:14:19 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Delivered-To: mailing list gcc-bugs@gcc.gnu.org Received: (qmail 7256 invoked by uid 48); 14 Jan 2015 07:14:14 -0000 From: "ubizjak at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug tree-optimization/59354] [4.8/4.9/5/Regression] Element swizzling produces invalid result with -O3 Date: Wed, 14 Jan 2015 07:14:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: tree-optimization X-Bugzilla-Version: 4.8.2 X-Bugzilla-Keywords: wrong-code X-Bugzilla-Severity: normal X-Bugzilla-Who: ubizjak at gmail dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.8.5 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-01/txt/msg01121.txt.bz2 Content-length: 1253 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D59354 --- Comment #7 from Uro=C5=A1 Bizjak --- Difference (-O2 vs -O3) of neatly formatted results in a 16x16 array: --- res-O2.txt 2015-01-14 08:08:39.000000000 +0100 +++ res-O3.txt 2015-01-14 08:09:57.000000000 +0100 @@ -1,7 +1,7 @@ -000, 001, 002, 003, 016, 017, 018, 019, 032, 033, 034, 035, 048, 049, 050, 051, -064, 065, 066, 067, 080, 081, 082, 083, 096, 097, 098, 099, 112, 113, 114, 115, -128, 129, 130, 131, 144, 145, 146, 147, 160, 161, 162, 163, 176, 177, 178, 179, -192, 193, 194, 195, 208, 209, 210, 211, 224, 225, 226, 227, 240, 241, 242, 243, +000, 001, 002, 003, 004, 005, 006, 007, 008, 009, 010, 011, 012, 013, 014, 015, +016, 017, 018, 019, 020, 021, 022, 023, 024, 025, 026, 027, 028, 029, 030, 031, +032, 033, 034, 035, 036, 037, 038, 039, 040, 041, 042, 043, 044, 045, 046, 047, +048, 049, 050, 051, 052, 053, 054, 055, 056, 057, 058, 059, 060, 061, 062, 063, 004, 005, 006, 007, 020, 021, 022, 023, 036, 037, 038, 039, 052, 053, 054, 055, 068, 069, 070, 071, 084, 085, 086, 087, 100, 101, 102, 103, 116, 117, 118, 119, 132, 133, 134, 135, 148, 149, 150, 151, 164, 165, 166, 167, 180, 181, 182, 183, The problem is only with the first 64 elements. >>From gcc-bugs-return-473128-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 14 07:14:50 2015 Return-Path: Delivered-To: listarch-gcc-bugs@gcc.gnu.org Received: (qmail 8027 invoked by alias); 14 Jan 2015 07:14:49 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Delivered-To: mailing list gcc-bugs@gcc.gnu.org Received: (qmail 7972 invoked by uid 48); 14 Jan 2015 07:14:45 -0000 From: "ubizjak at gmail dot com" To: gcc-bugs@gcc.gnu.org Subject: [Bug target/59371] [4.8/4.9/5 Regression] Performance regression in GCC 4.8 and later versions. Date: Wed, 14 Jan 2015 07:14:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: target X-Bugzilla-Version: 4.9.0 X-Bugzilla-Keywords: missed-optimization X-Bugzilla-Severity: normal X-Bugzilla-Who: ubizjak at gmail dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: 4.8.5 X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-01/txt/msg01122.txt.bz2 Content-length: 291 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D59371 --- Comment #14 from Uro=C5=A1 Bizjak --- (In reply to Uro=C5=A1 Bizjak from comment #13) > Difference (-O2 vs -O3) of neatly formatted results in a 16x16 array: Sorry, this comment doesn't belong in this PR. >>From gcc-bugs-return-473129-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Wed Jan 14 07:52:34 2015 Return-Path: Delivered-To: listarch-gcc-bugs@gcc.gnu.org Received: (qmail 31116 invoked by alias); 14 Jan 2015 07:52:33 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Delivered-To: mailing list gcc-bugs@gcc.gnu.org Received: (qmail 31078 invoked by uid 48); 14 Jan 2015 07:52:28 -0000 From: "trippels at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug ipa/64545] failed gcc build: internal compiler error: in inline_small_functions, at ipa-inline.c:1693 Date: Wed, 14 Jan 2015 07:52:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: ipa X-Bugzilla-Version: 5.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: major X-Bugzilla-Who: trippels at gcc dot gnu.org X-Bugzilla-Status: NEW X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: unassigned at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cf_gcctarget bug_status cf_reconfirmed_on component cc cf_gcchost everconfirmed cf_gccbuild Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-01/txt/msg01123.txt.bz2 Content-length: 1654 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64545 Markus Trippelsdorf changed: What |Removed |Added ---------------------------------------------------------------------------- Target|x86_64-unknown-linux-gnu | Status|UNCONFIRMED |NEW Last reconfirmed| |2015-01-14 Component|middle-end |ipa CC| |hubicka at gcc dot gnu.org, | |trippels at gcc dot gnu.org Host|x86_64-unknown-linux-gnu | Ever confirmed|0 |1 Build|x86_64-unknown-linux-gnu | --- Comment #3 from Markus Trippelsdorf --- Also happens with tramp3d on ppc64: trippels@gcc2-power8 ~ % ~/gcc_test/usr/local/bin/g++ -Ofast -fprofile-generate -mcpu=power8 -w tramp3d-v4.cpp trippels@gcc2-power8 ~ % ./a.out --cartvis 1.0 0.0 --rhomin 1e-8 -n 20 ... trippels@gcc2-power8 ~ % ~/gcc_test/usr/local/bin/g++ -Ofast -fprofile-use -mcpu=power8 -w tramp3d-v4.cpp tramp3d-v4.cpp:64206:1: internal compiler error: in inline_small_functions, at ipa-inline.c:1658 } ^ 0x11041b0b inline_small_functions ../../gcc/gcc/ipa-inline.c:1658 0x11041b0b ipa_inline ../../gcc/gcc/ipa-inline.c:2167 0x11041b0b execute ../../gcc/gcc/ipa-inline.c:2539 Please submit a full bug report, with preprocessed source if appropriate. Please include the complete backtrace with any bug report. See for instructions.