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[LoopStrengthReduce] Mitigation of issues introduced by compilation time optimization in SolveRecurse.

backend:AArch64

backend:AMDGPU

backend:ARM

backend:NVPTX

backend:PowerPC

backend:RISC-V

backend:WebAssembly

backend:X86

llvm:transforms

slow-compile

Status: Open (in progress).

llvm/llvm-projectnumber 147588

#147588 In llvm/llvm-project;

· SergeyShch01 opened on Jul 8, 2025

[opt][SROA] Long time spent in the SROA opt pass

debuginfo

llvm:optimizations

slow-compile

Status: Open.

#145937 In llvm/llvm-project;

· efwright opened on Jun 26, 2025

[LSR][slow compilation] LSR 10000x slower for some X86-64 architectures than others

flang:ir

llvm:optimizations

loopoptim

slow-compile

Status: Open.

#144858 In llvm/llvm-project;

· jeanPerier opened on Jun 19, 2025

C23 program compilation timeout

clang:codegenIR generation bugs: mangling, exceptions, etc.IR generation bugs: mangling, exceptions, etc.

slow-compile

Status: Open.

#143853 In llvm/llvm-project;

· 8ss-boop opened on Jun 12, 2025

[C++20][Modules] The search complexity for header file info is too expensive with a lot of modules.

clang:modulesC++20 modules and Clang Header ModulesC++20 modules and Clang Header Modules

slow-compile

Status: Open.

#140860 In llvm/llvm-project;

· mpark opened on May 21, 2025

Long and memory-wasting debug symbols generation

debuginfo

slow-compile

Status: Open.

#139970 In llvm/llvm-project;

· speshuric opened on May 14, 2025

Large compilation time with -O2 for a small file on x86_64-linux-gnu

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

slow-compile

Status: Open.

#139883 In llvm/llvm-project;

· KavyaChopra04 opened on May 14, 2025

Extremely Slow Compilation and Timeout with std::ranges::copy and std::views::iota

clang:diagnosticsNew/improved warning or error message in Clang, but not in clang-tidy or static analyzerNew/improved warning or error message in Clang, but not in clang-tidy or static analyzer

generated by fuzzer

slow-compile

Status: Open.

#139051 In llvm/llvm-project;

· mariete1223 opened on May 8, 2025

Clang compiles <code>_Generic</code> expressions very slowly

c11

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

slow-compile

Status: Open.

#137891 In llvm/llvm-project;

· JacksonAllan opened on Apr 29, 2025

File extremely slow to compile

debuginfo

llvm:optimizations

slow-compile

Status: Open.

#136635 In llvm/llvm-project;

· jcelerier opened on Apr 22, 2025

Quadratic scaling in processing of designated initializers

clang:frontendLanguage frontend issues, e.g. anything involving "Sema"Language frontend issues, e.g. anything involving "Sema"

slow-compile

Status: Open.

#136568 In llvm/llvm-project;

· amonakov opened on Apr 21, 2025

clang 20.1.1/19.1.7 hangs when compiling a specific Mesa file <code>src/mesa/main/format_utils.c</code> for x86; compilation never finishes after 2 hours

polly

slow-compile

Status: Open.

#132717 In llvm/llvm-project;

· MIvanchev opened on Mar 24, 2025