https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107304
Bug ID: 107304
Summary: internal compiler error: in convert_move, at
expr.cc:220 with -march=tigerlake
Product: gcc
Version: 12.2.0
Status: UNCONFIRMED
Severit
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107304
--- Comment #1 from Colin Ian King ---
See: https://github.com/ColinIanKing/stress-ng/issues/235
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107304
--- Comment #2 from Colin Ian King ---
Created attachment 53724
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53724&action=edit
preprocessed source that can be compiled to show bug
This is the pre-processed output from stress-vecshuf.c,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107304
--- Comment #3 from Colin Ian King ---
Created attachment 53725
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53725&action=edit
Got the issue down to a small reproducer
Ran code through gcc -E, hacked out the irrelevant code, got it down
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114987
Bug ID: 114987
Summary: floating point vector regression, x86, between gcc 14
and gcc-13 using -O3 and target clones on skylake
platforms
Product: gcc
Version: 1
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114987
--- Comment #1 from Colin Ian King ---
Created attachment 58127
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58127&action=edit
gcc-13 disassembly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114987
--- Comment #2 from Colin Ian King ---
Created attachment 58128
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58128&action=edit
gcc-14 disassembly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114987
--- Comment #3 from Colin Ian King ---
perf report from gcc-13 of stress_vecfp_float_add_16.avx of compute loop:
57.93 │200: vaddps 0xc0(%rsp),%ymm3,%ymm5
11.11 │ vaddps 0xe0(%rsp),%ymm2,%ymm6
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115002
Bug ID: 115002
Summary: wide integer vector performance regression, x86,
between gcc-14 and gcc-13 using target clones on
skylake platform
Product: gcc
Version:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115002
--- Comment #1 from Colin Ian King ---
Created attachment 58139
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58139&action=edit
gcc-13 disassembly
gcc-13 disassembly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115002
--- Comment #2 from Colin Ian King ---
Created attachment 58140
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58140&action=edit
gcc-14 disassembly
gcc-14 disassembly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115002
--- Comment #3 from Colin Ian King ---
Created attachment 58141
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58141&action=edit
perf output of stress_vecwide_2048 for gcc-13 compiled code
perf output of stress_vecwide_2048 for gcc-13 com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115002
--- Comment #4 from Colin Ian King ---
Created attachment 58142
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58142&action=edit
perf output of stress_vecwide_2048 for gcc-14 compiled code
perf output of stress_vecwide_2048 for gcc-14 com
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115024
Bug ID: 115024
Summary: 128 bit division performance regression, x86, between
gcc-14 and gcc-13 using target clones on skylake
platform
Product: gcc
Version: 14.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115024
--- Comment #1 from Colin Ian King ---
Created attachment 58159
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58159&action=edit
gcc-13 disassembly
gcc-13 disassembly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115024
--- Comment #2 from Colin Ian King ---
Created attachment 58160
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58160&action=edit
gcc-14 disassembly
gcc-14 disassembly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115024
--- Comment #3 from Colin Ian King ---
Created attachment 58161
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58161&action=edit
perf output for gcc-13 compiled code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115024
--- Comment #4 from Colin Ian King ---
Created attachment 58162
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58162&action=edit
perf output for gcc-14 compiled code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115025
Bug ID: 115025
Summary: prime computation performance regression, x86, between
gcc-14 and gcc-13 on skylake platform
Product: gcc
Version: 14.0
Status: UNCONFIRMED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115025
--- Comment #1 from Colin Ian King ---
Created attachment 58164
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58164&action=edit
gcc-13 disassembly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115025
--- Comment #2 from Colin Ian King ---
Created attachment 58165
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58165&action=edit
gcc-14 disassembly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115025
--- Comment #3 from Colin Ian King ---
Created attachment 58166
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58166&action=edit
perf output for gcc-13 compiled code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115025
--- Comment #4 from Colin Ian King ---
Created attachment 58167
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58167&action=edit
perf output for gcc-14 compiled code
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115029
Bug ID: 115029
Summary: FFT computation performance regression, x86, between
gcc-14 and gcc-13 on skylake platform
Product: gcc
Version: 14.0
Status: UNCONFIRMED
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115029
--- Comment #1 from Colin Ian King ---
Created attachment 58174
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58174&action=edit
gcc-13 disassembly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115029
--- Comment #2 from Colin Ian King ---
Created attachment 58175
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58175&action=edit
gcc-14 disassembly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115069
Bug ID: 115069
Summary: 8 bit integer vector performance regression, x86,
between gcc-14 and gcc-13 using avx2 target clones on
skylake platform
Product: gcc
Ver
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115069
--- Comment #1 from Colin Ian King ---
Created attachment 58189
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58189&action=edit
gcc-13 disassembly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115069
--- Comment #2 from Colin Ian King ---
Created attachment 58190
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58190&action=edit
gcc-14 disassembly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115071
Bug ID: 115071
Summary: performance regression, x86, between gcc-14 and gcc-13
using -O3 and _Pragma("GCC unroll 4") on skylake
Product: gcc
Version: 14.0
Status: UNCONF
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115071
--- Comment #1 from Colin Ian King ---
Created attachment 58192
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58192&action=edit
gcc-13 disassembly
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115071
--- Comment #2 from Colin Ian King ---
Created attachment 58193
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58193&action=edit
gcc-14 disassembly
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