[Bug target/80846] auto-vectorized AVX2 horizontal sum should narrow to 128b right away, to be more efficient for Ryzen and Intel

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80846 --- Comment #5 from Richard Biener --- Created attachment 41421 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41421=edit WIP patch

[Bug libgomp/80822] libgomp incorrect affinity when OMP_PLACES=threads

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80822 --- Comment #8 from Jakub Jelinek --- (In reply to Nathan Weeks from comment #6) > Created attachment 41417 [details] > output from comment #4 code compiled with Intel 17.0.2 Could I ask you for output of additional: for i in `seq 64`; do echo

[Bug target/80846] auto-vectorized AVX2 horizontal sum should narrow to 128b right away, to be more efficient for Ryzen and Intel

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80846 --- Comment #4 from Richard Biener --- (define_expand "3" [(set (match_operand:VI_AVX2 0 "register_operand") (plusminus:VI_AVX2 (match_operand:VI_AVX2 1 "vector_operand") (match_operand:VI_AVX2 2

[Bug target/80846] auto-vectorized AVX2 horizontal sum should narrow to 128b right away, to be more efficient for Ryzen and Intel

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80846 Richard Biener changed: What|Removed |Added CC||vmakarov at gcc dot gnu.org ---

[Bug target/80885] New: Do not use the opaque _mm256_cmp_ps to produce -1

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80885 Bug ID: 80885 Summary: Do not use the opaque _mm256_cmp_ps to produce -1 Product: gcc Version: 8.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component:

[Bug c++/80857] slow compare_exchange_weak with unintegral type

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80857 --- Comment #1 from sv_91 at inbox dot ru --- A simpler example for demonstrates the problem struct MyStruct { int64_t value; }; inline MyStruct operator+(const MyStruct , const MyStruct ) { return MyStruct{first.value + second.value};

[Bug sanitizer/80875] [7/8 Regression] UBSAN: compile time crash in fold_binary_loc at fold-const.c:9817

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80875 --- Comment #5 from Marek Polacek --- (In reply to Richard Biener from comment #4) > 9810 && negate_expr_p (op0) > 9811 && (tem = negate_expr (op1)) != op1 > > should probaby use negate_expr_p (op1) to guard

[Bug tree-optimization/80844] OpenMP SIMD doesn't know how to efficiently zero a vector (its stores zeros and reloads)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80844 --- Comment #7 from Richard Biener --- Maybe we can simply set loop->force_vectorize on the prologue / epilogue loops. Hmm, seems to be generated before we have a CFG ...

[Bug tree-optimization/80842] [7/8 Regression] ICE at -O3 on x86_64-linux-gnu in "set_lattice_value"

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80842 --- Comment #4 from Richard Biener --- Author: rguenth Date: Fri May 26 07:19:00 2017 New Revision: 248482 URL: https://gcc.gnu.org/viewcvs?rev=248482=gcc=rev Log: 2017-05-26 Richard Biener PR

[Bug c++/80859] Performance Problems with OpenMP 4.5 support

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80859 Jakub Jelinek changed: What|Removed |Added Status|WAITING |ASSIGNED --- Comment #23 from Jakub

[Bug tree-optimization/80844] OpenMP SIMD doesn't know how to efficiently zero a vector (its stores zeros and reloads)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80844 --- Comment #6 from Richard Biener --- Author: rguenth Date: Fri May 26 07:14:52 2017 New Revision: 248481 URL: https://gcc.gnu.org/viewcvs?rev=248481=gcc=rev Log: 2017-05-26 Richard Biener PR

[Bug tree-optimization/80884] [8 regression] test case gcc.target/powerpc/20050830-1.c fails starting with r247886

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80884 Richard Biener changed: What|Removed |Added Target Milestone|--- |8.0

[Bug ipa/80882] [8 regression] test case gfortran.dg/pr48636.f90 fails starting with r248375

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80882 Richard Biener changed: What|Removed |Added Target Milestone|--- |8.0

[Bug libgomp/80881] [7 Regression] null pointer access in libgomp.h

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80881 Richard Biener changed: What|Removed |Added Target Milestone|--- |7.2 Summary|[7.1

[Bug target/80880] internal compiler error: in ix86_expand_builtin

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80880 --- Comment #1 from Richard Biener --- (gdb) p debug_generic_expr (exp) __builtin_ia32_bndret (0B) And sinking does: Sinking __bound_tmp.0_3 = __builtin_ia32_bndret (_2); from bb 2 to bb 3 int* fn1.chkp() () { __bounds_type __bound_tmp.0;

[Bug tree-optimization/80876] [8 Regression] ICE in verify_loop_structure, at cfgloop.c:1644 (error: loop 1's latch does not have an edge to its header)

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80876 Richard Biener changed: What|Removed |Added Status|NEW |ASSIGNED Assignee|unassigned

[Bug sanitizer/80875] [7/8 Regression] UBSAN: compile time crash in fold_binary_loc at fold-const.c:9817

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80875 --- Comment #4 from Richard Biener --- 9810 && negate_expr_p (op0) 9811 && (tem = negate_expr (op1)) != op1 should probaby use negate_expr_p (op1) to guard this.

[Bug sanitizer/80875] [7/8 Regression] UBSAN: compile time crash in fold_binary_loc at fold-const.c:9817

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80875 Richard Biener changed: What|Removed |Added Priority|P3 |P2 CC|

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