Hi!
The following testcase ends up with SIGFPE in __divmodbitint4.
The problem is a thinko in my attempt to implement Knuth's algorithm.
The algorithm does (where b is 65536, i.e. one larger than what
fits in their unsigned short word):
// Compute estimate qhat of q[j].
qhat = (un
Hi!
While the SSA coalescing performed by lower bitint prints some information
if -fdump-tree-bitintlower-details, it is really hard to read and doesn't
contain the most important information which one looks for when debugging
bitint lowering issues, namely what VAR_DECLs (or PARM_DECLs/RESULT_DEC
Hi!
We generally allow merging mergeable stmts with some final cast (but not
further casts or mergeable operations after the cast). As some casts
are handled conditionally, if (idx < cst) handle_operand (idx); else if
idx == cst) handle_operand (cst); else ..., we must sure that e.g. the
mergeabl
Hi!
The following testcase is miscompiled, because some narrower value
is sign-extended to wider unsigned _BitInt used as division operand.
handle_operand_addr for that case returns the narrower value and
precision -prec_of_narrower_value. That works fine for multiplication
(at least, normal mult
On Sat, 2024-01-27 at 11:15 +0800, chenglulu wrote:
>
> 在 2024/1/26 下午6:57, Xi Ruoyao 写道:
> > On Fri, 2024-01-26 at 16:59 +0800, chenglulu wrote:
> > > 在 2024/1/26 下午4:49, Xi Ruoyao 写道:
> > > > On Fri, 2024-01-26 at 15:37 +0800, Lulu Cheng wrote:
> > > > > v3 -> v4:
> > > > > 1. Add macro supp
On Sat, 2024-01-27 at 18:02 +0800, Xi Ruoyao wrote:
> On Sat, 2024-01-27 at 11:15 +0800, chenglulu wrote:
> >
> > 在 2024/1/26 下午6:57, Xi Ruoyao 写道:
> > > On Fri, 2024-01-26 at 16:59 +0800, chenglulu wrote:
> > > > 在 2024/1/26 下午4:49, Xi Ruoyao 写道:
> > > > > On Fri, 2024-01-26 at 15:37 +0800, Lulu
On Wed, Jan 24, 2024 at 7:36 PM Hongtao Liu wrote:
>
> On Tue, Jan 23, 2024 at 11:00 PM H.J. Lu wrote:
> >
> > Changes in v3:
> >
> > 1. Rebase against commit 02e68389494
> > 2. Don't add call_no_callee_saved_registers to machine_function since
> > all callee-saved registers are properly clobbere
> Am 27.01.2024 um 09:18 schrieb Jakub Jelinek :
>
> Hi!
>
> The following testcase is miscompiled, because some narrower value
> is sign-extended to wider unsigned _BitInt used as division operand.
> handle_operand_addr for that case returns the narrower value and
> precision -prec_of_narrow
> Am 27.01.2024 um 09:15 schrieb Jakub Jelinek :
>
> Hi!
>
> While the SSA coalescing performed by lower bitint prints some information
> if -fdump-tree-bitintlower-details, it is really hard to read and doesn't
> contain the most important information which one looks for when debugging
> bit
> Am 27.01.2024 um 09:16 schrieb Jakub Jelinek :
>
> Hi!
>
> We generally allow merging mergeable stmts with some final cast (but not
> further casts or mergeable operations after the cast). As some casts
> are handled conditionally, if (idx < cst) handle_operand (idx); else if
> idx == cst)
Hi,
The test passes -mlittle-endian option but doesn't have target check
for aarch64_little_endian and thus fails to compile on
aarch64_be-linux-gnu. The patch adds the missing aarch64_little_endian
target check, which makes it unsupported on the target.
OK to commit ?
Thanks,
Prathamesh
PR112950:
Save callee-saved registers in noreturn functions for -O0/-Og so that
debugger can restore callee-saved registers in caller's frame.
gcc/
PR target/38534
* config/i386/i386-options.cc (ix86_set_func_type): Save
callee-saved registers in noreturn functions for -O0/-Og.
gcc
在 2024/1/27 下午7:11, Xi Ruoyao 写道:
On Sat, 2024-01-27 at 18:02 +0800, Xi Ruoyao wrote:
On Sat, 2024-01-27 at 11:15 +0800, chenglulu wrote:
在 2024/1/26 下午6:57, Xi Ruoyao 写道:
On Fri, 2024-01-26 at 16:59 +0800, chenglulu wrote:
在 2024/1/26 下午4:49, Xi Ruoyao 写道:
On Fri, 2024-01-26 at 15:37 +080
On Sat, Jan 27, 2024 at 05:52:34AM -0800, H.J. Lu wrote:
> @@ -3391,7 +3392,9 @@ ix86_set_func_type (tree fndecl)
> function is marked as noreturn in the IR output, which leads the
> incompatible attribute error in LTO1. */
>bool has_no_callee_saved_registers
> -= (((TREE_NOTHR
On Sat, Jan 27, 2024 at 6:09 AM Jakub Jelinek wrote:
>
> On Sat, Jan 27, 2024 at 05:52:34AM -0800, H.J. Lu wrote:
> > @@ -3391,7 +3392,9 @@ ix86_set_func_type (tree fndecl)
> > function is marked as noreturn in the IR output, which leads the
> > incompatible attribute error in LTO1. *
Changes in v2:
1. Lookup noreturn attribute first.
2. Use __attribute__((noreturn, optimize("-Og"))) in pr38534-6.c.
Save callee-saved registers in noreturn functions for -O0/-Og so that
debugger can restore callee-saved registers in caller's frame.
gcc/
PR target/38534
* c
For function symbol reference in readonly data section, instead of putting
it in .data.rel.ro or .rodata.cst section, call function_rodata_section to
get the read-only or relocated read-only data section associated with the
function DECL so that the COMDAT section will be used for a COMDAT function
This was another PR caused by the way that
vect_determine_precisions_from_range handle shifts. We tried to
narrow 32768 >> x to a 16-bit shift based on range information for
the inputs and outputs, with vect_recog_over_widening_pattern
(after PR110828) adjusting the shift amount. But this doesn't
Prathamesh Kulkarni writes:
> Hi,
> The test passes -mlittle-endian option but doesn't have target check
> for aarch64_little_endian and thus fails to compile on
> aarch64_be-linux-gnu. The patch adds the missing aarch64_little_endian
> target check, which makes it unsupported on the target.
> OK
Debug output ICEs when we do not set TYPE_STUB_DECL, fix this.
Fix ICE with -g and -std=c23 when forming composite types [PR113438]
Set TYPE_STUB_DECL to an artificial decl when creating a new structure
as a composite type.
PR c/113438
gcc/c/
Dear all,
commit r11-1235 for pr95331 addressed array bounds issues with
unlimited polymorphic array dummies, but caused regressions for
CLASS array dummies that lead to either wrong code with bounds-checking,
or an ICE. The solution is simple: add a check whether the dummy
is unlimited polymorph
The purpose of this test is to make sure that constant propagation is
achieved with the proper optimization level, so a BPF call instruction
to a kernel helper is generated. This patch updates the patch so it
also covers kernel helpers defined with constant static pointers.
The motivation for thi
When assembler directives for DWARF frame unwind is enabled, generate
the .cfi_undefined directive for unsaved callee-saved registers which
have been used in the function.
gcc/
PR target/38534
* config/i386/i386.cc (ix86_post_cfi_startproc): New.
(TARGET_ASM_POST_CFI_START
I don't provide a new test because this error only happens when there
are no include paths at all, and I haven't worked out a way to get this
to happen within DejaGNU (as it adds a number of `-B` and `-I` flags).
Bootstrapped and regtested on x86_64-pc-linux-gnu, OK for trunk?
-- >8 --
When ther
Hi David - and thanks for posting an outline for libdiagnostics at
https://gcc.gnu.org/wiki/libdiagnostics
Currently this shows both libdiagnosts and libdiagnostics-sarif-dump
integrated into GCC. Is this the plan or would those be available as a
top-level project (the program as an example for
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