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[Bug rtl-optimization/95859] New: Statically true asserts not recognized as such with -O2, but with -O1, -Og, -O3
2021-09-05 17:54 UTC (2+ messages)
` [Bug ipa/95859] [10/11/12 regression] "
[Bug ipa/98265] New: gcc-10 has significantly worse code generated with -O2 compared to -O1 (or gcc-9 -O2) when using the Eigen C++ library
2021-09-05 17:54 UTC (2+ messages)
` [Bug ipa/98265] [10 Regression] "
[Bug ipa/94762] New: ICE: Segmentation fault (in is_tm_irrevocable)
2021-09-05 17:48 UTC (2+ messages)
` [Bug ipa/94762] [9/10/11/12 Regression] ICE: Segmentation fault (in is_tm_irrevocable) since r7-1710-g849a76a5a20db383
[Bug ipa/80277] ipa-icf overlooking functions with identical assemble and semantics
2021-09-05 17:32 UTC
[Bug tree-optimization/57218] New: Excessive inlining even at -Os
2021-09-05 17:24 UTC (2+ messages)
` [Bug ipa/57218] [9/10/11/12 Regression] "
[Bug middle-end/90408] >= -O2 suddenly generates code
2021-09-05 16:44 UTC (4+ messages)
[Bug c++/102208] New: Acceptance of invalid decltype(auto) in the default operator <=>
2021-09-05 12:55 UTC
[Bug c++/94501] New: bogus "no matches converting function ... to type ..." error with variadic function template
2021-09-05 11:27 UTC (2+ messages)
` [Bug c++/94501] arrays are not decaying to pointers in variadic function template for conversion to a function pointer
[Bug demangler/102132] New: [nm] Stack overflow in demangler_path
2021-09-05 11:00 UTC (2+ messages)
` [Bug demangler/102132] "
[Bug demangler/102130] New: [c++filt] Stack overflow in demangle_path
2021-09-05 10:57 UTC (2+ messages)
` [Bug demangler/102130] "
[Bug tree-optimization/102207] New: [12 Regression] wrong code with __builtin_sub_overflow() at -O1 and above with uint128
2021-09-05 10:40 UTC (3+ messages)
` [Bug tree-optimization/102207] "
[Bug tree-optimization/90625] fold strcmp(a, b) == 0 to zero for strings of unequal but non-const lengths
2021-09-05 8:35 UTC
[Bug tree-optimization/90768] better range analysis for converting bit tests into less-than greater-than
2021-09-05 8:32 UTC
[Bug tree-optimization/81772] Compile-time snprintf optimization
2021-09-05 8:22 UTC
[Bug target/68211] Free __m128d subreg of double
2021-09-05 8:13 UTC
[Bug middle-end/87595] __tls_get_addr should be __attribute__((__noplt__))
2021-09-05 8:01 UTC
[Bug tree-optimization/84794] memcpy/memmove between a struct and its first member not eliminated
2021-09-05 7:58 UTC
[Bug middle-end/102206] New: amd zen hosts running zen-optimized gcc: gimplification ICE after 94e24187
2021-09-05 7:49 UTC
[Bug target/89954] missed optimization for signed extension for x86-64
2021-09-05 7:01 UTC
[Bug middle-end/82170] gcc optimizes int range-checking poorly on x86-64
2021-09-05 6:51 UTC
[Bug tree-optimization/83819] [meta-bug] missing strlen optimizations
2021-09-05 6:41 UTC
[Bug tree-optimization/86708] strlen of an empty aggregate element or member string not folded
2021-09-05 6:41 UTC
[Bug middle-end/88971] Branch optimization inconsistency (missed optimization)
2021-09-05 6:11 UTC (2+ messages)
` [Bug ipa/88971] "
[Bug tree-optimization/83190] missing strlen optimization of the empty string
2021-09-05 5:47 UTC
[Bug tree-optimization/82911] missing strlen optimization for strncpy with constant strings and constant bound
2021-09-05 5:45 UTC
[Bug rtl-optimization/93525] Left shift and arithmetic shift could be futher simplified in simplify-rtx.c
2021-09-05 5:37 UTC
[Bug tree-optimization/93539] memmove over self with result of string function not eliminated
2021-09-05 5:36 UTC
[Bug tree-optimization/93556] lower mempcpy to memcpy when result is unused
2021-09-05 5:32 UTC
[Bug tree-optimization/93560] strstr(s, s) not folded to s
2021-09-05 5:09 UTC
[Bug target/93737] inline memmove for insertion into small arrays
2021-09-05 5:06 UTC
[Bug target/93396] [RX] tail call optimization does not work with indirect call
2021-09-05 5:05 UTC
[Bug middle-end/91409] Missed optimization on `labels as values` expression
2021-09-05 4:58 UTC
[Bug middle-end/52082] New: Memory loads not rematerialized
2021-09-05 4:52 UTC (2+ messages)
` [Bug rtl-optimization/52082] "
[Bug target/91103] AVX512 vector element extract uses more than 1 shuffle instruction; VALIGND can grab any element
2021-09-05 4:32 UTC
[Bug ipa/88231] aligned functions laid down inefficiently
2021-09-05 4:30 UTC
[Bug tree-optimization/89043] strcat (strcpy (d, a), b) not folded to stpcpy (strcpy (d, a), b)
2021-09-05 4:29 UTC
[Bug tree-optimization/86604] phiopt missed optimization of conditional add
2021-09-05 4:17 UTC
[Bug tree-optimization/86241] duplicate strlen-like snprintf calls not folded
2021-09-05 4:07 UTC
[Bug tree-optimization/86339] DOM does not handle RHS COND_EXPRs well
2021-09-05 4:06 UTC
[Bug tree-optimization/85116] std::min_element does not optimize well with inlined predicate
2021-09-05 4:05 UTC
[Bug middle-end/86085] I/O built-ins considered argument clobbers
2021-09-05 3:58 UTC (2+ messages)
[Bug target/102205] New: vec<int> + 1 could be done as vec<int> - (-1)
2021-09-05 3:39 UTC
[Bug target/85324] missing constant propagation on SSE/AVX conversion intrinsics
2021-09-05 3:35 UTC
[Bug c++/102204] New: OpenMP offload map type restriction
2021-09-05 3:30 UTC
[Bug c++/98869] New: Allowing mapping this in OpenMP target
2021-09-05 3:22 UTC (2+ messages)
` [Bug c++/98869] "
[Bug middle-end/84756] Multiplication done twice just to get upper and lower parts of product
2021-09-05 3:16 UTC
[Bug ipa/84312] Variadic function without named argument not inlined
2021-09-05 3:11 UTC
[Bug tree-optimization/85406] Unnecessary blend when vectorizing short-cutted calculations
2021-09-05 2:58 UTC
[Bug rtl-optimization/80301] Sub-optimal code with an array of structs offsetted inside a struct global on x86/x86_64 at -O2
2021-09-05 1:39 UTC
[Bug target/102203] New: __builtin_memset and __builtin_memcpy could be expanded inline if range is known to be small
2021-09-05 1:28 UTC
[Bug target/102202] New: Inefficent expansion of memset when range is [0,1]
2021-09-05 1:22 UTC (3+ messages)
` [Bug target/102202] "
[Bug tree-optimization/66646] New: small loop turned into memmove because of tree ldist
2021-09-05 1:01 UTC (2+ messages)
` [Bug tree-optimization/66646] "
[Bug target/101059] New: v4sf reduction not optimal
2021-09-05 0:58 UTC (2+ messages)
` [Bug target/101059] "
[Bug tree-optimization/93745] Redundant store not eliminated with intermediate instruction
2021-09-05 0:34 UTC
[Bug tree-optimization/95410] New: Failure to optimize compare next to and properly
2021-09-05 0:33 UTC (2+ messages)
` [Bug tree-optimization/95410] "
[Bug tree-optimization/99383] New: No tree-switch-conversion under PIC
2021-09-05 0:29 UTC (3+ messages)
` [Bug tree-optimization/99383] "
[Bug tree-optimization/84011] Optimize switch table with run-time relocation
2021-09-05 0:29 UTC
[Bug tree-optimization/93326] switch optimisation of multiple jumptables into a lookup
2021-09-05 0:27 UTC
[Bug middle-end/98357] New: Bounds check not eliminated
2021-09-05 0:21 UTC (2+ messages)
` [Bug tree-optimization/98357] "
[Bug tree-optimization/85316] [meta-bug] VRP range propagation missed cases
2021-09-05 0:21 UTC (2+ messages)
[Bug tree-optimization/94846] New: Failure to optimize jnc+inc into adc
2021-09-05 0:13 UTC (2+ messages)
` [Bug tree-optimization/94846] "
[Bug target/98453] New: aarch64: Missed opportunity for STP for vec_duplicate
2021-09-05 0:07 UTC (2+ messages)
` [Bug target/98453] "
[Bug tree-optimization/95527] New: Failure to optimize __builtin_ffs == 0
2021-09-05 0:03 UTC (2+ messages)
` [Bug tree-optimization/95527] "
[Bug middle-end/19987] [meta-bug] fold missing optimizations in general
2021-09-05 0:03 UTC (2+ messages)
[Bug tree-optimization/85375] possible missed optimisation / regression from 6.3 with while (__builtin_ffs(x) && x)
2021-09-05 0:03 UTC
[Bug rtl-optimization/94798] New: Failure to optimize subtraction and 0 literal properly
2021-09-04 23:57 UTC (2+ messages)
` [Bug rtl-optimization/94798] "
[Bug tree-optimization/97603] New: Failure to optimize out compare into reuse of subtraction result
2021-09-04 23:52 UTC (2+ messages)
` [Bug rtl-optimization/97603] "
[Bug tree-optimization/95433] New: Failure to completely optimize simple compare after operations
2021-09-04 23:39 UTC (2+ messages)
` [Bug tree-optimization/95433] "
[Bug tree-optimization/18487] Warnings for pure and const functions that are not actually pure or const
2021-09-04 22:25 UTC (6+ messages)
[Bug tree-optimization/94789] New: Failure to take advantage of shift operand semantics to turn subtraction into negate
2021-09-04 22:21 UTC (2+ messages)
` [Bug target/94789] "
[Bug middle-end/92080] Missed CSE of _mm512_set1_epi8(c) with _mm256_set1_epi8(c)
2021-09-04 22:17 UTC
[Bug target/93346] gcc does not generate BZHI
2021-09-04 22:01 UTC (2+ messages)
[Bug target/82298] x86 BMI: no peephole for BZHI
2021-09-04 22:01 UTC
[Bug tree-optimization/99082] New: manual bit-field creation followed by manual extraction does not always produce good code
2021-09-04 21:53 UTC (2+ messages)
` [Bug tree-optimization/99082] "
[Bug c/97286] New: GCC sometimes uses an extra xmm register for the destination of _mm_blend_ps
2021-09-04 21:49 UTC (2+ messages)
` [Bug target/97286] "
[Bug target/88473] AVX512: constant folding on mask does not remove unnecessary instructions
2021-09-04 21:46 UTC
[Bug target/95974] New: AArch64 arm_neon.h stores interfere with gimple optimisations
2021-09-04 21:38 UTC (2+ messages)
` [Bug target/95974] "
[Bug tree-optimization/94834] New: Failure to optimize loop bswap pattern
2021-09-04 21:33 UTC (2+ messages)
` [Bug tree-optimization/94834] "
[Bug tree-optimization/89811] uint32_t load is not recognized if shifts are done in a fixed-size loop
2021-09-04 21:33 UTC (2+ messages)
[Bug target/93885] Spurious instruction kshiftlw issued
2021-09-04 21:31 UTC
[Bug middle-end/91899] Merge constant literals
2021-09-04 21:20 UTC
[Bug target/85539] x86_64: loads are not always narrowed
2021-09-04 21:17 UTC
[Bug middle-end/90424] memcpy into vector builtin not optimized
2021-09-04 21:02 UTC
[Bug tree-optimization/93040] gcc doesn't optimize unaligned accesses to a 16-bit value on the x86 as well as it does a 32-bit value (or clang)
2021-09-04 20:53 UTC (2+ messages)
[Bug tree-optimization/89809] movzwl is not utilized when uint16_t is loaded with bit-shifts (while memcpy does)
2021-09-04 20:53 UTC
[Bug middle-end/56309] New: -O3 optimizer generates conditional moves instead of compare and branch resulting in almost 2x slower code
2021-09-04 20:26 UTC (3+ messages)
` [Bug target/56309] conditional moves instead of compare and branch result "
[Bug c/29970] mixing ({...}) with VLA leads to massive breakage
2021-09-04 19:55 UTC
[Bug c++/102201] New: Accepts invalid C++98 with nested class and sizeof of outer's non-static field
2021-09-04 17:01 UTC (2+ messages)
` [Bug c++/102201] "
[Bug c++/101355] New: compiling coroutines with ubsan emits bogus -Wmaybe-uninitialized warnings
2021-09-04 16:39 UTC (2+ messages)
` [Bug c++/101355] incorrect `this' in destructor calls when compiling coroutines with ubsan
[Bug middle-end/102196] New: -Wmaybe-uninitialized: Maybe generate helpful hints?
2021-09-04 14:44 UTC (7+ messages)
` [Bug tree-optimization/102196] "
[Bug c/102200] New: ice in put_ref, at pointer-query.cc:1351
2021-09-04 14:38 UTC (3+ messages)
` [Bug tree-optimization/102200] [12 Regression] "
[Bug libstdc++/102199] New: is_default_constructible incorrect for an inner type with NSDMI
2021-09-04 14:22 UTC (4+ messages)
` [Bug c++/102199] "
[Bug middle-end/32911] Function __attribute__ ((idempotent))
2021-09-04 10:27 UTC
[Bug tree-optimization/93540] Attributes pure and const not working with aggregate return types, even trivial ones
2021-09-04 10:18 UTC
[Bug c++/101933] New: Unloaded dll with global std::mutex causes exe to crash on exit #38
2021-09-04 8:56 UTC (4+ messages)
` [Bug target/101933] "
` [Bug target/101933] Unloaded dll with global std::mutex causes exe to crash on exit
[Bug target/88476] Optimize expressions which uses vector, mask and general purpose registers
2021-09-04 6:57 UTC
[Bug target/89984] Extra register move
2021-09-04 6:41 UTC
[Bug tree-optimization/52034] New: __builtin_copysign optimization suboptimal
2021-09-04 6:38 UTC (4+ messages)
` [Bug target/52034] "
[Bug target/85819] conversion from __v[48]su to __v[48]sf should use FMA
2021-09-04 6:12 UTC
[Bug target/81357] Extra mov for zero extend of add
2021-09-04 3:42 UTC
[Bug target/82139] unnecessary movapd with _mm_castsi128_pd to use BLENDPD on __m128i results
2021-09-04 3:01 UTC
[Bug target/81085] inefficient union with long double argument on 32-bit x86
2021-09-04 2:32 UTC
[Bug c/57485] New: memcpy in aggregate return not eliminated
2021-09-04 1:23 UTC (2+ messages)
` [Bug middle-end/57485] "
[Bug tree-optimization/102162] New: Byte-wise access optimized away at -O1 and above
2021-09-03 23:25 UTC (2+ messages)
` [Bug middle-end/102162] "
[Bug c++/102198] New: Unused and nonsensical template instantiations used for return type inference end up in the output
2021-09-03 21:52 UTC
[Bug target/102107] New: protocol register (r12) corrupted before a tail call
2021-09-03 21:08 UTC (3+ messages)
` [Bug target/102107] "
[Bug c++/99215] New: coroutines: debugging with gdb
2021-09-03 20:25 UTC (2+ messages)
` [Bug c++/99215] "
[Bug tree-optimization/102188] New: Over widening detection doesn't work when no range information
2021-09-03 20:19 UTC (2+ messages)
` [Bug tree-optimization/102188] "
[Bug target/102197] New: ABI to pass and return 32-bit FP vectors
2021-09-03 20:16 UTC
[Bug c/102193] New: DLL linking with a external referenced DLL
2021-09-03 19:52 UTC (3+ messages)
` [Bug driver/102193] "
[Bug debug/102195] New: Missing DW_TAG_typedef when using qualified variable of typedef'd array
2021-09-03 19:46 UTC (3+ messages)
` [Bug debug/102195] "
[Bug fortran/101349] New: ICE in gfc_get_descriptor_field, at fortran/trans-array.c:140
2021-09-03 19:18 UTC (2+ messages)
` [Bug fortran/101349] "
[Bug fortran/102113] New: parsing error in assigned goto
2021-09-03 19:14 UTC (2+ messages)
` [Bug fortran/102113] "
[Bug driver/102189] New: error: unrecognized command-line option '-fno-[...]'; did you mean '-ftree-[...]'?
2021-09-03 19:13 UTC (2+ messages)
` [Bug driver/102189] "
[Bug c++/64867] New: warning for passing non-POD to varargs function
2021-09-03 18:17 UTC (2+ messages)
` [Bug c++/64867] split warning for passing non-POD to varargs function from -Wconditionally-supported into new warning flag, -Wnon-pod-varargs
[Bug c++/102194] New: Incorrect explicit instantiation of constexpr variable accepted
2021-09-03 17:43 UTC
[Bug target/94630] New: General bug for changes needed to switch the PowerPC long double default
2021-09-03 17:05 UTC (2+ messages)
` [Bug target/94630] General bug for changes needed to switch the powerpc64le-linux "
[Bug libstdc++/101960] New: std::tuple with an array element is rejected as a named return type
2021-09-03 17:02 UTC (2+ messages)
` [Bug libstdc++/101960] "
[Bug target/102173] New: [12 Regression] ICEs gcc.target/aarch64/sve/acle/general-c/type_redef_1.c after recent error recovery patch
2021-09-03 16:59 UTC (2+ messages)
` [Bug target/102173] "
[Bug ada/101947] New: [12 Regression] Broken Ada bootstrap in get_base_type_offset, at dwarf2out.c:4330
2021-09-03 16:05 UTC (3+ messages)
` [Bug debug/101947] [12 Regression] Broken LTO "
[Bug c++/101904] New: Wrong result of decltype during instantiation of std::result_of
2021-09-03 15:34 UTC (2+ messages)
` [Bug c++/101904] "
[Bug tree-optimization/102192] New: Curious '-O2'-only '-Wmaybe-uninitialized' diagnostics for 'libgomp.oacc-fortran/routine-10.f90'
2021-09-03 14:59 UTC
[Bug c++/102191] New: Can't return prvalue with potentially-throwing destructor during constant evaluation
2021-09-03 14:57 UTC
[Bug other/101157] New: [12 regression] ICE compiling gcc.target/powerpc/stack-limit.c after r12-1702
2021-09-03 14:55 UTC (2+ messages)
` [Bug middle-end/101157] "
[Bug fortran/102190] New: Syntax error reported in associate construct
2021-09-03 14:52 UTC
[Bug bootstrap/100832] New: s390x-linux-gnu: wrong number of alternatives in the output template
2021-09-03 13:28 UTC (2+ messages)
` [Bug bootstrap/100832] "
[Bug fortran/91442] Wrong "may be used uninitialized" warning with allocation on assignment
2021-09-03 12:59 UTC (2+ messages)
[Bug go/102102] New: [12 Regression] trunk 20210827 ftbfs libgo on x86_64-linux-gnux32
2021-09-03 12:29 UTC (2+ messages)
` [Bug go/102102] "
[Bug bootstrap/102187] New: Ada LTO bootstrap broken on x86_64 since r12-2927-g29020d0527512a
2021-09-03 8:35 UTC (2+ messages)
` [Bug bootstrap/102187] "
[Bug target/102024] New: zero width bitfields and ABIs
2021-09-03 8:12 UTC (3+ messages)
` [Bug target/102024] [12 Regression] "
[Bug target/102154] New: [12 Regression] ICE in extract_insn, at recog.c:2769
2021-09-03 7:58 UTC (2+ messages)
` [Bug target/102154] [12 Regression] ICE in extract_insn, at recog.c:2769 since r12-3277-gd2874d905647a1d146dafa60199d440e837adc4d
[Bug bootstrap/102186] New: [12 Regression] Broken bootstrap: soft-fp/half.h:62:1: error: unable to emulate ‘HF’ since r12-3308-ge42d2d2a20f2bb59928bc895ec9f46503a1b5c73
2021-09-03 7:42 UTC (5+ messages)
` [Bug bootstrap/102186] "
` [Bug target/102186] "
[Bug target/102182] New: Runtime error for gcc.dg/torture/fp-int-convert-float16.c
2021-09-03 7:38 UTC (6+ messages)
` [Bug target/102182] "
[Bug d/102185] New: d: STRING_CSTs converted back into StringExp include null pointer in length
2021-09-03 7:20 UTC
[Bug c++/102184] New: Explicit template instantiation is wrongly considered as specialization
2021-09-03 7:07 UTC (3+ messages)
` [Bug c++/102184] "
` [Bug c++/102184] Explicit template instantiation thinks there is an ambiguous template specialization when there is none for concepts
[Bug tree-optimization/102178] New: SPECFP 2006 470.lbm regressions on AMD Zen CPUs after r12-897-gde56f95afaaa22
2021-09-03 7:07 UTC (2+ messages)
` [Bug tree-optimization/102178] "
[Bug middle-end/102183] New: sccvn compare predicated result issue in vn_nary_op_insert_into
2021-09-03 6:38 UTC
[Bug c/50994] New: wanted: interface for querying cache size
2021-09-03 6:32 UTC (2+ messages)
` [Bug middle-end/50994] "
[Bug middle-end/44089] [vect256] gfortran.dg/vect/pr33301.f failed with -O3 -mavx
2021-09-03 6:23 UTC
[Bug target/29778] missed optimization: model missing vec_pack/unpack idioms for ia64
2021-09-03 6:13 UTC
[Bug tree-optimization/17217] not removing removal of nested structs
2021-09-03 6:13 UTC
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