subject:"\[Bug tree\-optimization\/89049\] \[8\/9 Regression\] Unexpected vectorization"

[Bug tree-optimization/89049] [8/9 Regression] Unexpected vectorization

2019-03-08 Thread rguenth at gcc dot gnu.org

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89049 --- Comment #11 from Richard Biener --- Just an update on costs: t.c:1:35: note: === vect_compute_single_scalar_iteration_cost === 0x483e120 *_3 1 times scalar_load costs 12 in body 0x483e120 _4 + r_16 1 times scalar_stmt costs 12 in body and

[Bug tree-optimization/89049] [8/9 Regression] Unexpected vectorization

2019-02-22 Thread jakub at gcc dot gnu.org

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89049 Jakub Jelinek changed: What|Removed |Added Target Milestone|8.3 |8.4 --- Comment #10 from Jakub Jelinek

[Bug tree-optimization/89049] [8/9 Regression] Unexpected vectorization

2019-01-30 Thread rguenth at gcc dot gnu.org

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89049 --- Comment #9 from Richard Biener --- Split out the target cost issue to PR89114, it'll improve code-gen for the unwanted vectorization a bit at least. That's independent on the vectorizer cost issue.

[Bug tree-optimization/89049] [8/9 Regression] Unexpected vectorization

2019-01-25 Thread segher at gcc dot gnu.org

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89049 Segher Boessenkool changed: What|Removed |Added CC||segher at gcc dot gnu.org --- Comme

[Bug tree-optimization/89049] [8/9 Regression] Unexpected vectorization

2019-01-25 Thread rguenth at gcc dot gnu.org

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89049 --- Comment #7 from Richard Biener --- Author: rguenth Date: Fri Jan 25 12:46:24 2019 New Revision: 268264 URL: https://gcc.gnu.org/viewcvs?rev=268264&root=gcc&view=rev Log: 2019-01-25 Richard Biener PR tree-optimization/89049

[Bug tree-optimization/89049] [8/9 Regression] Unexpected vectorization

2019-01-25 Thread rguenth at gcc dot gnu.org

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89049 Richard Biener changed: What|Removed |Added CC|segher at gcc dot gnu.org | --- Comment #6 from Richard Bie

[Bug tree-optimization/89049] [8/9 Regression] Unexpected vectorization

2019-01-25 Thread rguenth at gcc dot gnu.org

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89049 Richard Biener changed: What|Removed |Added CC||segher at gcc dot gnu.org --- Comment #

[Bug tree-optimization/89049] [8/9 Regression] Unexpected vectorization

2019-01-25 Thread rguenth at gcc dot gnu.org

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89049 --- Comment #4 from Richard Biener --- With -mtune=core-avx2 we do vmovups (%rdi), %xmm1 vmovups (%rdi), %ymm3 ... vextractf128$0x1, %ymm3, %xmm1 with -mtune=intel the even more weird vmovups (%rdi), %xmm1

[Bug tree-optimization/89049] [8/9 Regression] Unexpected vectorization

2019-01-25 Thread rguenth at gcc dot gnu.org

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89049 --- Comment #3 from Richard Biener --- In the assembly I notice vinsertf128 $0x1, 16(%rdi), %ymm4, %ymm2 ... vextractf128$0x1, %ymm2, %xmm1 somehow we fail to elide the initial %ymm2 build with the upper half extraction

[Bug tree-optimization/89049] [8/9 Regression] Unexpected vectorization

2019-01-25 Thread rguenth at gcc dot gnu.org

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89049 --- Comment #2 from Richard Biener --- Created attachment 45531 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=45531&action=edit scalar loop cost patch I'm testing this patch (not fixing the testcase, just improving costs).