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scalbln(x, n), scalbn(x, n), ldexp(x, n) are not folded at the compilation time when (x, n) is constant
floating-point
Floating-point math
good first issue
https://github.com/llvm/llvm-project/contribute
llvm:optimizations
missed-optimization
#112631
opened Oct 16, 2024 by
k-arrows
Result pointer in fastcall changed between clang 18 and clang 20
llvm:optimizations
#112519
opened Oct 16, 2024 by
Yehouda
Allow SelectionDAGISel as well
missed-optimization
AND-NOT
to be emitted from NOT
+ <some bit/byte reordering> + AND
llvm:optimizations
llvm:SelectionDAG
#112425
opened Oct 15, 2024 by
Validark
LLVM at -Oz can't remove a loop that can be removed at -O3
llvm:optimizations
#112149
opened Oct 13, 2024 by
dcci
Missed optimization: Imperfect optimization of straightforward std::find
llvm:optimizations
missed-optimization
#112063
opened Oct 12, 2024 by
Alcaro
Reassociate pass on Umbrella label for LLVM issues
i128
created from two i64
s changes subtraction to addition of a negative
llvm:optimizations
llvm
#111697
opened Oct 9, 2024 by
Bryce-MW
LLVM trunk emits ~40% larger code at -Oz compared to -O2
llvm:codesize
Code size issues
llvm:optimizations
#111571
opened Oct 8, 2024 by
dcci
clang misoptimization cached equality of thread local variable
coroutines
C++20 coroutines
llvm:optimizations
#111257
opened Oct 5, 2024 by
kelbon
[Inline] Inlining created a huge function, leading to compile time long
llvm:optimizations
slow-compile
#111102
opened Oct 4, 2024 by
DianQK
[llvm][opt][Transforms][SPIR-V] Enable Clang issues not falling into any other category
llvm:optimizations
llvm:transforms
tools:opt
InferAddressSpaces
for SPIR-V
backend:AMDGPU
backend:SPIR-V
clang
#110897
opened Oct 2, 2024 by
AlexVlx
Loading…
LLVM does not try to collect common factors in sum of products involving constants
llvm:optimizations
missed-optimization
#110786
opened Oct 2, 2024 by
alion02
Unnecessary
fsqrt
of 0.0
llvm:optimizations
missed-optimization
#110589
opened Sep 30, 2024 by
Kmeakin
[clang] Missed optimization: dead store to thread-local not optimized out
llvm:optimizations
missed-optimization
#109718
opened Sep 23, 2024 by
tavianator
Missed optimization:
lshr(smax(x, 0), y)
can be transformed to smax(ashr(x, y), 0)
llvm:optimizations
missed-optimization
#109471
opened Sep 20, 2024 by
okaneco
clang crashes when compiling coroutine on Windows
confirmed
Verified by a second party
coroutines
C++20 coroutines
crash-on-valid
llvm:optimizations
needs-reduction
Large reproducer that should be reduced into a simpler form
platform:windows
regression:19
Regression in 19 release
#109253
opened Sep 19, 2024 by
flode
Copying a static value in an array with -Oz far from optimal size
llvm:optimizations
missed-optimization
#108841
opened Sep 16, 2024 by
AreaZR
Simple bit manipulation resulting in disjoint set could be tracked
llvm:optimizations
missed-optimization
#108829
opened Sep 16, 2024 by
Validark
stack-coloring without -O1
llvm:optimizations
question
A question, not bug report. Check out https://llvm.org/docs/GettingInvolved.html instead!
#108744
opened Sep 15, 2024 by
ashu3123
Memory allocation elision for std::vector cases
llvm:optimizations
missed-optimization
#108407
opened Sep 12, 2024 by
apolukhin
Possible Partial redundancy optimization using code duplication
llvm:optimizations
#108331
opened Sep 12, 2024 by
anirudha-commits
C++: Incorrect optimization regarding strict-aliasing rules
llvm:optimizations
miscompilation
#108232
opened Sep 11, 2024 by
naprimeroleg
[WPD] SPEC 2006 xalancbmk fails with Whole Program Devirtualization turned on.
llvm:optimizations
#108109
opened Sep 10, 2024 by
UsmanNadeem
[Clang] Constant value is corrupted when optimization is enabled
llvm:optimizations
#108010
opened Sep 10, 2024 by
gerekon
assume
s prevent deletion of dead code
llvm:optimizations
missed-optimization
#107774
opened Sep 8, 2024 by
Kmeakin
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