t guard it with #ifdef __GNUC__.
And IMO it's just hiding the real problem.
We need more info of the "particular machine". Is this a hardware bug
(i.e. the machine violates the AArch64 spec) or a GCC code generation
issue? Or should we generally use -ffp-contract=off in BOOT_CFLAGS?
-
ger floating
> point rounding inaccuracies?)
It's possible that the test itself is flaky. Can you provide some
detail about how it fails?
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
On Fri, 2023-07-21 at 16:58 +0300, Alexander Monakov wrote:
>
> On Fri, 21 Jul 2023, Xi Ruoyao via Gcc-patches wrote:
>
> > Perhaps -ffp-contract=on (not off) is enough to fix the issue (if you
> > are building GCC 14 snapshot). The default is "fast" (if no -
rom implementing -mabi=ilp32d -
march=loongarch64 and they should be fixed. They are not our excuse to
blindly "simulate" what RISC-V has.
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
t_op & GET_MODE_MASK (int_mode),
> + GET_RTX_NAME (adjusted_code), n);
> }
> poly_int64 offset = (BYTES_BIG_ENDIAN
> ? 0
> : (GET_MODE_SIZE (int_mode)
> - GET_MODE_SIZE (narrow_mode_iter)));
> *pop0 = adjust_address_nv (op0, narrow_mode_iter, offset);
> - *pop1 = GEN_INT (n);
> + *pop1 = gen_int_mode (n, narrow_mode_iter);
> return adjusted_code;
> }
> }
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
only used once?
> + tree type,ftype;
> + tree const_string_type
> +
> =build_pointer_type(build_qualified_type(char_type_node,TYPE_QUAL_CONST));
Really bad format. In GNU coding standard you should have a white space
after '=', and before '(', etc. Please fix the formatting everywhere.
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
t; +}
Same logic error. And this seems exactly same as nanq, the analogous is
definitely wrong because __builtin_nanq should return a quiet NaN, but
__builtin_nansq should return a signaling NaN.
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
On Tue, 2023-08-08 at 10:24 +0800, Xi Ruoyao wrote:
And I think this way to implement these functions (using libgcc calls)
is not the best.
On 64-bit LoongArch a __float128 is stored in a pair of GPR, so
operations like copysignq and absq can be implemented much more
efficiently by expanding
8.
Unfortunately for LP64 ABI _ABILP64 is already a part of public API.
I've tried to raise a deprecation warning for them, but it seems doing
so needs a major change in libcpp... However ILP32 ABI is "fresh new"
so we should take the advantage to remove the historic burden.
--
Xi
> (set (match_dup 1)
> (match_operand:GPR 2 "register_operand" "r"))]
> - ""
> + "TARGET_64BIT"
> "amswap%A3.\t%0,%z2,%1"
> [(set (attr "length") (const_int 8))])
>
> @@ -182,7 +182,7 @@
> [(match_operand:QI 0 "register_operand" "") ;; bool output
> (match_operand:QI 1 "memory_operand" "+ZB") ;; memory
> (match_operand:SI 2 "const_int_operand" "")] ;; model
> - ""
> + "TARGET_64BIT"
> {
> /* We have no QImode atomics, so use the address LSBs to form a mask,
> then use an aligned SImode atomic. */
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
t; +mscatter
> +Target
> +Enable vectorization for scatter instruction.
> +
> mpreferred-stack-boundary=
> Target RejectNegative Joined UInteger
> Var(ix86_preferred_stack_boundary_arg)
> Attempt to keep stack aligned to this power of 2.
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
to close it.
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
@
> +// { dg-do compile { target c++11 } }
> +
> +#include
> +
> +using namespace __gnu_test;
> +
> +#define SA(X) static_assert((X),#X)
> +
> +// Positive tests.
> +SA(__is_const(const int));
> +SA(__is_const(const volatile int));
> +SA(__is_const(cClassType));
> +SA(__is_const(cvClassType));
> +
> +// Negative tests.
> +SA(!__is_const(int));
> +SA(!__is_const(volatile int));
> +SA(!__is_const(ClassType));
> +SA(!__is_const(vClassType));
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
On Fri, 2023-06-30 at 04:08 +0800, Xi Ruoyao wrote:
> On Thu, 2023-06-29 at 16:01 -0400, Marek Polacek via Gcc-patches wrote:
> > These tests fail when the testsuite is executed with -fstack-
> > protector-strong.
> > To avoid this, this patch adds -fno-stack-pr
> @@ -1,5 +1,5 @@
> /* { dg-do compile } */
> -/* { dg-options "-O3" } */
> +/* { dg-options "-O3 -fno-stack-protector" } */
>
> static inline void memset_s(void* s, int n) {
> volatile unsigned char * p = s;
>
> base-commit: 070a6bf0bdc6761ad77ac97404c98f00a7007d54
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
On Fri, 2023-06-30 at 10:16 +0800, Chenghui Pan wrote:
> +(define_c_enum "unspec" [
> + UNSPEC_LSX_ASUB_S
> + UNSPEC_LSX_VABSD_U
> + UNSPEC_LSX_VAVG_S
/* ... */
To me many of them can be modeled using RTL templates, instead of an
unspec.
--
Xi Ruoyao
Schoo
+
> gcc/config/loongarch/predicates.md | 333 +-
> 25 files changed, 28723 insertions(+), 290 deletions(-)
> create mode 100644 gcc/config/loongarch/lasx.md
> create mode 100644 gcc/config/loongarch/lasxintrin.h
> create mode 100644 gcc/config/loongarch/lsx.md
> create mode 100644 gcc/config/loongarch/lsxintrin.h
>
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
P64D anymore), or we add some special switch for
it (like x86's -msseregparm and sseregparm attribute).
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
The LA464 micro-architecture is sensitive to alignment of code. The
Loongson team has benchmarked various combinations of function, the
results [1] show that 16-byte label alignment together with 32-byte
function alignment gives best results in terms of SPEC score.
Add a mtune-based table-driven
On Wed, 2023-06-14 at 09:55 +0800, Jiufu Guo wrote:
> Hi,
>
> Xi Ruoyao writes:
>
> > On Tue, 2023-06-13 at 20:23 +0800, Jiufu Guo via Gcc-patches wrote:
> >
> > > Compare with previous version, this addes ChangeLog and removes
> > > const_anchor part
e link should be "../conduct.html" :).
> +
>
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
On Wed, 2023-05-10 at 22:02 +0200, Thomas Koenig wrote:
> On 10.05.23 21:29, Bernhard Reutner-Fischer via Fortran wrote:
> > On Mon, 27 Jun 2022 14:10:36 +0800
> > Xi Ruoyao wrote:
> >
> > > fgrep has been deprecated in favor of grep -F for a long time, and th
can only a dedicate a certain amount of
> the day to reviews. And reviewing patches can be time-consuming in
> itsself.
>
> So sometimes a patch will get a review within the day. Sometimes it
> will take a bit longer. The fact that a patch doesn't get a response
> within one wor
On Sat, 2023-04-29 at 12:05 -0600, Jeff Law wrote:
>
>
> On 4/15/23 06:01, Xi Ruoyao via Gcc-patches wrote:
> > This prevents a spurious message building a cross-compiler when
> > target
> > libc is not installed yet:
> >
> > cc1: error: no i
On Wed, 2023-04-26 at 21:29 +0800, Xi Ruoyao via Gcc-patches wrote:
> >
> > Do you have any questions about the test cases mentioned by
> > Guo
> > Jie? If there is no problem, modify the test case,
> >
> > I think the code can be merged into the mai
ry long. I will reply the result as soon as the test results
> > come out.:-)
> >
> Oh, I got. Thanks very much for all the tests and take your time!
Sorry if it's noisy, but I hope there is some (maybe preliminary)
result: now I finally have some spare time to rebuild the system with
GCC 13 and I'd like to use some -falign-functions= in my CFLAGS :).
--
Xi Ruoyao
School of Aerospace Science and Technology, Xidian University
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