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riscv64 and aarch64 backends propagating range metadata too aggressively

backend:AArch64

backend:RISC-V

miscompilation

Status: Open.

Bug

#145363 In llvm/llvm-project;

· regehr opened on Jun 23, 2025

rem/div-related miscompile from riscv64 and aarch64 backends

llvm:SelectionDAGSelectionDAGISel as wellSelectionDAGISel as well

miscompilation

Status: Closed (completed).

Bug

#145360 In llvm/llvm-project;

· by regehr was closed on Jun 23, 2025

AArch64 backend folds fcmp nnan nsz + select to fminnm, causing confusion between +0.0 and -0.0

floating-pointFloating-point mathFloating-point math

llvm:analysisIncludes value tracking, cost tables and constant foldingIncludes value tracking, cost tables and constant folding

miscompilation

Status: Closed (completed).

Bug

#137998 In llvm/llvm-project;

· by regehr was closed on Jun 2, 2025

integer math miscompile from AArch64 global isel backend

llvm:globalisel

miscompilation

Status: Closed (completed).

Bug

#137254 In llvm/llvm-project;

· by regehr was closed on Apr 26, 2025

fshr-related miscompile by AArch64 backend

good first issuehttps://github.com/llvm/llvm-project/contributehttps://github.com/llvm/llvm-project/contribute

llvm:SelectionDAGSelectionDAGISel as wellSelectionDAGISel as well

miscompilation

Status: Closed (completed).

Bug

#136746 In llvm/llvm-project;

· by regehr was closed on May 12, 2025

miscompile from AArch64 backend

llvm:codegen

miscompilation

Status: Closed (completed).

Bug

#133928 In llvm/llvm-project;

· by regehr was closed on Apr 5, 2025

vector miscompile from AArch64 backend

backend:AArch64

duplicateResolved as duplicateResolved as duplicate

miscompilation

NEONARM NEONARM NEON

Status: Duplicate of an existing item.

Bug

#125990 In llvm/llvm-project;

· by regehr was closed on Feb 6, 2025

· Duplicate

vector miscompile from AArch64 backend

backend:AArch64

miscompilation

NEONARM NEONARM NEON

release:backport

Status: Closed (completed).

Bug

#125989 In llvm/llvm-project;

· by regehr was closed on Feb 7, 2025

 ·  

LLVM 20.X Release

vector miscompile from AArch64 backend

llvm:SelectionDAGSelectionDAGISel as wellSelectionDAGISel as well

Status: Closed (completed).

Bug

#121372 In llvm/llvm-project;

· by regehr was closed on Jan 21, 2025

AArch64 failure to parse emitted asm "error: requested extract overflows register"

backend:AArch64

crash-on-valid

Status: Closed (completed).

Bug

#61192 In llvm/llvm-project;

· by regehr was closed on Jun 6, 2025

latest clang on AArch64 OSX doesn't want to hear about the frame pointer

backend:AArch64

crashPrefer [crash-on-valid] or [crash-on-invalid]Prefer [crash-on-valid] or [crash-on-invalid]

Status: Closed (completed).

Bug

#60643 In llvm/llvm-project;

· by regehr was closed on May 27, 2025

possible illegal asm from AArch64 + global isel

backend:AArch64

confirmedVerified by a second partyVerified by a second party

llvm:globalisel

miscompilation

Status: Closed (completed).

Bug

#60369 In llvm/llvm-project;

· by regehr was closed on Jun 10, 2025