On Monday, 20 May 2019 at 08:21:19 UTC, Iain Buclaw wrote:
Looks like you've done a typo to me. Memory should be a
clobber, not an input operand.
Yes, that too.
On Monday, 20 May 2019 at 08:11:19 UTC, Mike Franklin wrote:
But I can't get GDC to do the same:
https://explore.dgnu.org/z/quCjhU
Is this currently possible in GDC?
Gah!! Ignore that. `version (GNU)`, not `version(GDC)`.
This works:
void use(void* p)
{
version(LDC)
{
imp
I'm trying to benchmark some code, but the optimizer is basically
removing all of it, so I'm benchmarking nothing.
I'd like to do something like what Chandler Carruth does here to
defeat the optimizer:
https://www.youtube.com/watch?v=nXaxk27zwlk&feature=youtu.be&t=2446
Here presents the fol
On Sunday, 19 May 2019 at 06:54:14 UTC, Timo Sintonen wrote:
I am updating my toolset and libraries to GCC/GDC 9.1 release.
First impression is that druntime needs more work than with
previous versions. Many places to change and even compiler
crashes when compiling some files.
Before I look f
On Saturday, 4 May 2019 at 11:34:16 UTC, Iain Buclaw wrote:
1. Where is development taking place? Where is HEAD?
It's happening in SVN, there are a few official git mirrors
however.
Is that also where I can find the latest GDC with the D frontend?
Now that GDC has been officially released with GCC 9.1...
1. Where is development taking place? Where is HEAD?
2. Where do we file bugs?
Thanks,
Mike
On Wednesday, 25 July 2018 at 10:32:40 UTC, Zheng (Vic) Luo wrote:
Instead of forcing developers to avoid memset-like access
pattern in a freestanding environment and increasing their
mental burden, a universal flags to disable these the
generation of these calls will probably be a better choi
On Wednesday, 25 July 2018 at 08:37:28 UTC, Zheng (Vic) Luo wrote:
Current implementation of compilers assumes the existence of
some symbols from libc, which leads to an infinite loop if we
want to implement primitives like "memset" with our own code
because the compiler will optimize consecut
I'd like to be able to use GCC's `__builtin_alloca` without the C
standard library.
This seems to work:
--- core/stdc/stdlib.d
module core.stdc.stdlib;
extern(C) void* alloca(size_t n) pure;
---
...but, since I'm not actually using the C standard library, I'd
prefer to avoid creating that mod
On Friday, 20 July 2018 at 11:11:12 UTC, Mike Franklin wrote:
I ask for any insight you might have, should you wish to give
this your attention. Regardless, I'll keep investigating.
Just to follow up, after I enabled `-funroll-loops` for GDC, it
was almost twice as fast as LDC, though the co
On Friday, 20 July 2018 at 12:49:59 UTC, Mike Franklin wrote:
GDC
---
arm-none-eabi-gdc -c -O2 -nophoboslib -nostdinc -nodefaultlibs
-nostdlib -mthumb -mcpu=cortex-m4 -mtune=cortex-m4
-mfloat-abi=hard -Isource/runtime -fno-bounds-check
-ffunction-sections -fdata-sections -fno-weak
_D5board3
Actually the assembly output from objdump isn't quite accurate.
Here's the generated assembly from the compiler.
LDC
---
ldc2 -conf= -disable-simplify-libcalls -c -Os
-mtriple=thumb-none-eabi -float-abi=hard -mcpu=cortex-m4
-Isource/runtime -boundscheck=off
_D5board3lcd8fillRectFiikktZv:
I've finally succeeded in getting a build of my STM32 ARM
Cortex-M proof of concept in LDC and GDC, thanks to the recent
changes in both compilers. So, I now have a way to compare code
generation between the two compilers.
The project is extremely simple; it just generates a bunch of
random
On Tuesday, 20 March 2018 at 23:06:23 UTC, Cecil Ward wrote:
How do I report some extremely weird (useless) code generated
by GDC when the -O3 option is used? (bizarre rats’ nest of
conditional jumps). [I am an experienced professional asm
programmer, now retired.]
The D source is short, fort
On Wednesday, 7 March 2018 at 12:49:30 UTC, berni wrote:
The following code compiles with ldc/dmd but not with gdc:
cat test.d
void main()
{
int[] count;
{
import std.string;
++count[3];
}
}
gdc test.d
test.d:8:16: error: only one index allowed to index void
On Tuesday, 24 June 2014 at 14:14:18 UTC, Johannes Pfau wrote:
Am Tue, 24 Jun 2014 10:46:11 +
schrieb "Timo Sintonen" :
To keep this thread going, I had a quick look at the reference
material of the dip and picked some thoughts.
In some languages volatile has a stronger meaning, like
gua
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