https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81778
Tom de Vries changed:
What|Removed |Added
Resolution|--- |FIXED
Target Milestone|---
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81778
--- Comment #11 from Tobias Burnus ---
Cross ref: the submitted patch is at
https://gcc.gnu.org/pipermail/gcc-patches/2020-October/555352.html
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81778
--- Comment #10 from Tom de Vries ---
Tentative patch:
...
diff --git a/gcc/omp-expand.c b/gcc/omp-expand.c
index 99cb4f9dda4..034de497390 100644
--- a/gcc/omp-expand.c
+++ b/gcc/omp-expand.c
@@ -6333,6 +6333,8 @@ expand_omp_simd (struct
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81778
--- Comment #9 from Tom de Vries ---
I ran into this again, and did another round of minimizing. This time, I added
some buffering around where we write, and check the entire buffer afterwards:
...
$ cat
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81778
Tobias Burnus changed:
What|Removed |Added
CC||burnus at gcc dot gnu.org
--- Comment
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81778
--- Comment #7 from Tom de Vries ---
A point fix could look like:
...
diff --git a/gcc/omp-expand.c b/gcc/omp-expand.c
index 3990998..2439a89 100644
--- a/gcc/omp-expand.c
+++ b/gcc/omp-expand.c
@@ -4339,6 +4339,26 @@ expand_omp_for_static_chunk
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81778
--- Comment #6 from Tom de Vries ---
This is essentially:
...
diff --git a/gcc/omp-expand.c b/gcc/omp-expand.c
index 2c28682..3990998 100644
--- a/gcc/omp-expand.c
+++ b/gcc/omp-expand.c
@@ -4327,6 +4327,18 @@ expand_omp_simd (struct omp_region
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81778
--- Comment #5 from Tom de Vries ---
See PR83457 - "Add fhost-simt-vf" for a way to reproduce this bug on x86_64.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81778
Alexander Monakov changed:
What|Removed |Added
Status|UNCONFIRMED |NEW
Last reconfirmed|
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81778
--- Comment #3 from Tom de Vries ---
The core loop looks like this:
...
$L4:
add.u32 %r31,%r42,-1;
cvt.u64.u32 %r63,%r31;
shl.b64 %r64,%r63,2;
add.u64 %r65,%r75,%r64;
ld.u32 %r71,[%r65];
add.u32 %r70,%r71,-4;
st.u32 [%r65],%r70;
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81778
--- Comment #2 from Tom de Vries ---
nvidia card: Quadro M1200
cuda: 7.5
cuda driver: 375.66
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81778
--- Comment #1 from Tom de Vries ---
Created attachment 41956
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=41956=edit
GOMP_DEBUG=1 log
12 matches
Mail list logo
