Testing GDC (GCC 7.1) on Runtime-less ARM Cortex-M

[Mike via D.gnu]

On Wednesday, 28 June 2017 at 12:15:17 UTC, Johannes Pfau wrote:

> Have you already tried -fsyntax-only to remove the backend 
> computation?

time arm-none-eabi-gdc -c -O3 -fsyntax-only -nophoboslib 
-nostdinc -nodefaultlibs -nostdlib -fno-emit-moduleinfo -mthumb 
-mcpu=cortex-m4 -Isource/runtime -fno-bounds-check 
-fno-invariants -fno-in -fno-out -ffunction-sections 
-fdata-sections source/gcc/attribute.d source/board/package.d 
source/board/ILI9341.d source/board/lcd.d source/board/spi5.d 
source/board/statusLED.d source/board/random.d 
source/board/ltdc.d source/stm32f42/bus.d source/stm32f42/scb.d 
source/stm32f42/trace.d source/stm32f42/dma2d.d 
source/stm32f42/spi.d source/stm32f42/pwr.d source/stm32f42/rcc.d 
source/stm32f42/rng.d source/stm32f42/nvic.d 
source/stm32f42/mmio.d source/stm32f42/flash.d 
source/stm32f42/gpio.d source/stm32f42/ltdc.d source/main.d -o 
binary/firmware.o

real    0m1.858s
user    0m1.157s
sys     0m0.241s

Does that indicate a backend problem?  If you look at my previous 
post, linking was also quite high at 33s.

> Also which DMD version did you use for comparison? I'd try 
> 2.068 (if your code compiles with that version) and 2.071.2. 
> There may have been other changes in newer frontend versions 
> improving build performance.

dmd --version
DMD64 D Compiler v2.074.0

Mike