Low coremark benchmark score on Cyclone V (ARM Cortex A9)

I have opened a support ticket through our FAI in the meantime. The compiler is armclang (ARM compiler 6).

Here is the compiler output when using the -v flag. Maybe you can spot something odd in the trace.

Target: arm-arm-none-eabi

"C:\\intelFPGA\\18.1\\embedded\\ds-5\\sw\\ARMCompiler6.10.1\\lib\\tt_default\\bin\\armclang.exe"

-cc1

--tool_variant=altera

-triple armv7-arm-none-eabi

-emit-obj

-disable-free

-disable-llvm-verifier

-discard-value-names

-main-file-name stubs.c

-mrelocation-model static

-mthread-model posix

-menable-no-infs

-menable-no-nans

-fmath-errno

-fno-signed-zeros

-fno-trapping-math

-fdenormal-fp-math=preserve-sign

-ffinite-math-only

-masm-verbose

-mconstructor-aliases

-target-cpu cortex-a9

-target-feature -crc

-target-feature +dsp

-target-feature -dotprod

-target-feature -ras

-target-feature -hwdiv-arm

-target-feature -hwdiv

-target-abi aapcs

-fno-math-builtin

-mfloat-abi hard

-fallow-half-arguments-and-returns

-dwarf-column-info

-debug-info-kind=limited

-dwarf-version=4

-debugger-tuning=gdb

-v

-ffunction-sections

-fdata-sections

-coverage-notes-file [...]

-resource-dir "C:\\intelFPGA\\18.1\\embedded\\ds-5\\sw\\ARMCompiler6.10.1\\lib\\tt_default\\lib\\clang\\7.0.0"

-dependency-file [...]

-MT[...]

-sys-header-deps

-I [...]

-D [...]

-internal-isystem "C:\\intelFPGA\\18.1\\embedded\\ds-5\\sw\\ARMCompiler6.10.1\\bin\\..\\include"

-nobuiltininc

-O2

-std=c99

-fdebug-compilation-dir [...]

-ferror-limit 19

-fmessage-length 0

-fvisibility hidden

-fno-signed-char

-fdeclspec

-fobjc-runtime=gcc

-fno-common

-fdiagnostics-show-option

-fsuppress-licensing

-vectorize-loops

-vectorize-slp

-aggressive-jump-threading -o [...]

-x c [...]

ARM Compiler 6.10.1 -cc1 default target aarch64-arm-none-eabi

#include "..." search starts here:

#include <...> search starts here:

[...]

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