https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101053
Andrew Pinski changed:
What|Removed |Added
Resolution|--- |MOVED
Status|UNCONFIRMED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101053
--- Comment #9 from Gilles Gouaillardet
---
And here is the one-liner to fix this mess
--- orig/OpenBLAS-0.3.15/kernel/arm64/dznrm2_thunderx2t99.c 2021-05-03
06:50:22.0 +0900
+++ OpenBLAS-0.3.15/kernel/arm64/dznrm2_thunderx2t99.c
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101053
--- Comment #8 from Gilles Gouaillardet
---
It seems OpenBLAS is to be blamed after all ...
>From kernel/arm64/dznrm2_thunderx2t99.c:
#define REGINF "d9"
static void nrm2_compute(BLASLONG n, FLOAT *x, BLASLONG inc_x,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101053
--- Comment #7 from Gilles Gouaillardet
---
Note you have to 'make clean' before re-running 'make ...' with different
options.
Otherwise, pretty much nothing gets rebuilt.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101053
--- Comment #6 from Gilles Gouaillardet
---
I will set the watchpoint and follow the flow ...
That being said, I still see the issue with the latest snapshot
gcc (GCC) 12.0.0 20210613 (experimental)
./dgehd2
INFO =0
1.00
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101053
--- Comment #5 from Andrew Pinski ---
(In reply to Andrew Pinski from comment #4)
And yes I got the d9 register having 1.0 inside dgehd2 .
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101053
--- Comment #4 from Andrew Pinski ---
I tried to reproduce it but I could not on the trunk (it has one patch which
should not make a difference):
Using built-in specs.
COLLECT_GCC=gfortran
COLLECT_LTO_WRAPPER=/home/ubuntu/upstream-gcc/libexec/gc
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101053
--- Comment #3 from Gilles Gouaillardet
---
Thanks for the clarification about which registers have to be preserved.
I will dig this a bit more from now
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101053
--- Comment #2 from Andrew Pinski ---
The code for dlarfg_ looks correct.
78: 6d0627e8stp d8, d9, [sp, #96]
238: 6d4627e8ldp d8, d9, [sp, #96]
23c: fd402fealdr d10, [sp, #88]
240: 178a
