PING: [PATCH] Add TARGET_STORE_BY_PIECES_ICODE

On Mon, Apr 28, 2025 at 8:57 PM H.J. Lu wrote: > > On x86, both stores with 32-bit immediate and register are supported: > >0: 48 c7 40 10 00 00 00 00 movq $0x0,0x10(%rax) >8: 48 89 50 10 movq %rdx,0x10(%rax) > > But store with 32-bit immediate is 4 byte longer. > > Add UNSPEC

Re: [PATCH v2 3/4] Rewrite VCEs of integral types [PR116939]

On Wed, May 7, 2025 at 4:10 AM Richard Biener wrote: > > On Wed, May 7, 2025 at 3:55 AM Andrew Pinski wrote: > > > > Like the patch to phiopt (r15-4033-g1f619fe25925a5f7), this adds rewriting > > of VCE to gimple_with_undefined_signed_overflow/rewrite_to_defined_overflow. > > In the case of movin

[PATCH] libfortran: Fix up maxval/maxloc for UNSIGNED [PR120158]

Hi! When libgfortran is compiled, there are some -Woverflow warnings like ../../../libgfortran/generated/maxloc0_4_m1.c:99:14: warning: unsigned conversion from ‘int’ to ‘GFC_UINTEGER_1’ {aka ‘unsigned char’} changes value from ‘-255’ to ‘1’ [-Woverflow] 99 | maxval = -GFC_UINTEGER_1_HUGE

Re: [GCC16, RFC, V2 06/14] opts: doc: aarch64: add new memtag sanitizer

On 5/1/25 7:03 AM, Richard Sandiford wrote: Indu Bhagat writes: [...] diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index ffde9df85fd3..de651183a703 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -17079,6 +17079,14 @@ and @option{-fsanitize=kernel-hwaddress}. To disabl

Re: Patch Submission: Optimize Size of true and false Macros in C

On Tue, 6 May 2025, SAKSHAM JOSHI wrote: > I am submitting a patch for the GCC compiler's "stdbool.h" to optimize the > size of the true and false macros in the C programming language. Currently, > the size of the true and false macros is 4 bytes, whereas the _Bool > datatype is 1 byte in size. Th

[committed] libstdc++: Add missing export for std::is_layout_compatible_v [PR120159]

libstdc++-v3/ChangeLog: PR libstdc++/120159 * src/c++23/std.cc.in (is_layout_compatible_v): Export. --- Tested x86_64-linux. Pushed to trunk and gcc-15. libstdc++-v3/src/c++23/std.cc.in | 1 + 1 file changed, 1 insertion(+) diff --git a/libstdc++-v3/src/c++23/std.cc.in b/libstd

Re: [GCC16,RFC,V2 03/14] aarch64: add new insn definition for st2g

Indu Bhagat writes: >>> starting bb 3 >>> 33: {cc:CC=cmp(r121:DI,0x10);r121:DI=r121:DI-0x10;} >>> 32: r122:DI=r122:DI+0x10 >>> 31: [r122:DI+0]=unspec/v[[r122:DI+0],r120:DI] 17 >>> mem count failure >>> mem count failure >> >> Yeah, we'd need to update auto-inc-dec for this case. >>

Re: [GCC16, RFC, V2 13/14] gcc: aarch64: memtag: update link spec to pass arguments to linker

On 5/1/25 12:01 PM, Richard Sandiford wrote: Indu Bhagat writes: In context of stack tagging, the AArch64 Memtag ABI Extension to ELF specifies the usage of two dynamic tags for the dynamic loader to do the necessary tasks: - If DT_AARCH64_MEMTAG_MODE is present, the dynamic loader should (i

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