Search results

[InstCombine] Propagate nsw in (sub (and Op1, (neg X)), Op1) --> neg (and Op1, (add X, -1))

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

llvm:transforms

Status: Open (in progress).

llvm/llvm-projectnumber 149366

#149366 In llvm/llvm-project;

· AZero13 opened on Jul 17, 2025

[InstCombine] Propagate NSW in ~((-X) | Y) --> (X - 1) & (~Y)

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

llvm:transforms

Status: Open (in progress).

llvm/llvm-projectnumber 149359

#149359 In llvm/llvm-project;

· AZero13 opened on Jul 17, 2025

[InstSimplify] Add poison propagation for trivially vectorizable intrinsics

backend:AMDGPU

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

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

llvm:transforms

Status: Open (in progress).

llvm/llvm-projectnumber 149243

#149243 In llvm/llvm-project;

· badumbatish opened on Jul 17, 2025

[InstCombine] Add missing patterns for scmp and ucmp

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

llvm:transforms

Status: Open (in progress).

llvm/llvm-projectnumber 149225

#149225 In llvm/llvm-project;

· AZero13 opened on Jul 16, 2025

[InstCombine] Let shrinkSplatShuffle act on vectors of different lengths

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

llvm:transforms

Status: Open (in progress).

llvm/llvm-projectnumber 148593

#148593 In llvm/llvm-project;

· Adar-Dagan opened on Jul 14, 2025

Pessimising rewrite in <code>contains_zero_byte</code>

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

missed-optimization

Status: Open.

#148041 In llvm/llvm-project;

· Kmeakin opened on Jul 10, 2025

[InstCombine] Fold <code>lshr -&gt; zext -&gt; shl</code> patterns

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

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

llvm:transforms

Status: Open (in progress).

llvm/llvm-projectnumber 147737

#147737 In llvm/llvm-project;

· zGoldthorpe opened on Jul 9, 2025

[InstCombine] Decompose constant xor operand if possible

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

llvm:transforms

Status: Open (in progress).

llvm/llvm-projectnumber 147599

#147599 In llvm/llvm-project;

· sgundapa opened on Jul 8, 2025

[InstCombine] Merge one-use GEP offsets during expansion

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

llvm:transforms

Status: Open (in progress).

llvm/llvm-projectnumber 147263

#147263 In llvm/llvm-project;

· nikic opened on Jul 7, 2025

Match the inverse of m_AddOverflow

backend:AArch64

backend:X86

llvm:codegen

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

llvm:ir

llvm:transforms

Status: Open (in progress).

llvm/llvm-projectnumber 147215

#147215 In llvm/llvm-project;

· AZero13 opened on Jul 6, 2025

[InstCombine] fold icmp of select with constants and invertible op

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

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

llvm:transforms

Status: Draft (not ready).

llvm/llvm-projectnumber 147182

#147182 In llvm/llvm-project;

· Acthinks opened on Jul 6, 2025

[InstCombine] Add limit for expansion of gep chains

llvm:instcombineCovers the InstCombine, InstSimplify and AggressiveInstCombine passesCovers the InstCombine, InstSimplify and AggressiveInstCombine passes

llvm:transforms

Status: Open (in progress).

llvm/llvm-projectnumber 147065

#147065 In llvm/llvm-project;

· nikic opened on Jul 4, 2025