Could you try adding -mno-avx2 to /sys/boot/amd64/ line 9?

On 09/23/14 07:28, Harald Schmalzbauer wrote:
  Bezüglich O. Hartmann's Nachricht vom 19.09.2014 15:22 (localtime):
The problem I reported about in the first place is triggered by a faulty 
loader.efi that
arises, when optimisation level is -O3. -O2 works fine.
I can confirm that this problem also shows up when using
Setting CPUTYPE to core-avx-i doesnt ehibit the problem.

I could narrow down the cause to libefi.a (sys/boot/efi).
But I don't understand the things going on there, so no clue how to fix
besides maybe

--- sys/boot/efi/ 2014-09-23 16:22:46.000000000 +0200
+++ sys/boot/efi/ 2014-09-23 16:25:16.000000000 +0200
@@ -2,6 +2,10 @@

BINDIR?= /boot

+.ifdef CPUTYPE
+.undef CPUTYPE
.if ${MACHINE_CPUARCH} == "i386"
CFLAGS+= -march=i386


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