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Issues list

[AMDGPU] InstCombine moving freeze instructions breaks FMA formation backend:AMDGPU code-quality llvm:instcombine
#141622 opened May 27, 2025 by jayfoad
1
Wrong folding to fabs floating-point Floating-point math llvm:instcombine miscompilation
#141538 opened May 27, 2025 by bongjunj
2
[AArch64] Fix #94909: Optimize vector fmul(sitofp(x), 0.5) -> scvtf(x, 2) backend:AArch64 llvm:instcombine llvm:transforms
#141480 opened May 26, 2025 by jph-13 Loading…
9
Missed optimization: (%1 <= ~%0) && (%0 > ~%1) ==> false good first issue https://github.com/llvm/llvm-project/contribute llvm:instcombine missed-optimization
#141479 opened May 26, 2025 by GINN-Imp
@bobby-b-song
4
[ConstantFolding] Add folding for [de]interleave2, insert and extract llvm:analysis llvm:instcombine llvm:transforms
#141301 opened May 23, 2025 by npanchen Loading…
7
[InstCombine] Fold shuffled intrinsic operands with constant operands llvm:instcombine llvm:transforms
#141300 opened May 23, 2025 by lukel97 Loading…
7
Add constant-folding for unary NVVM intrinsics backend:NVPTX llvm:analysis llvm:instcombine llvm:ir llvm:transforms
#141233 opened May 23, 2025 by LewisCrawford Loading…
3
[InstCombine] Miscompilation select (fcmp nsz olt X, 0.0), -0.0, X -> select (fcmp nsz ole X, -0.0), -0.0, X floating-point Floating-point math llvm:instcombine miscompilation
#141017 opened May 22, 2025 by dtcxzyw
@dtcxzyw
[ValueTracking][InstCombine] Generalize ignoreSignBitOfZero/NaN to handle more cases floating-point Floating-point math llvm:analysis llvm:instcombine llvm:transforms
#141015 opened May 22, 2025 by dtcxzyw Loading…
17
[InstCombine] (fcmp une T, F) ? T : F --> T should not rely on the nsz flag on fcmp floating-point Floating-point math llvm:instcombine miscompilation
#140994 opened May 22, 2025 by dtcxzyw
1
@dtcxzyw
[InstCombine] Do not rely on the nsz flag on fcmp floating-point Floating-point math llvm:instcombine metabug Issue to collect references to a group of similar or related issues. miscompilation
#140992 opened May 22, 2025 by dtcxzyw
@dtcxzyw
Missed DCE when popcount of multiplication of two integers but arg1 is 1 in icelake-client good first issue https://github.com/llvm/llvm-project/contribute llvm:instcombine missed-optimization
#140917 opened May 21, 2025 by BreadTom
@youngbash88
7
[InstCombine] Implemented missed optimization in muldivrem llvm:instcombine llvm:transforms
#140916 opened May 21, 2025 by kshitijvp Loading…
1
7
[InstCombine] Fold max(max(x, c1) << c2, c3) —> max(x << c2, c3) when c3 >= c1 * 2 ^ c2 llvm:instcombine llvm:transforms
#140526 opened May 19, 2025 by Charukesh827 Loading…
1
23
[ConstantFolding] Add flag to disable call folding llvm:analysis llvm:instcombine llvm:transforms
#140270 opened May 16, 2025 by LewisCrawford Loading…
6
[InstCombine] Detect uadd with overflow idiom llvm:instcombine llvm:transforms
#140178 opened May 16, 2025 by AZero13 Loading…
14
Missed constant folding through control flow llvm:instcombine llvm:optimizations missed-optimization
#140025 opened May 15, 2025 by GINN-Imp
@houngkoungting
7
Missed Optimization: max(max(x, c1) << c2, c3) —> max(x << c2, c3) when c3 >= c1 * 2 ^ c2 good first issue https://github.com/llvm/llvm-project/contribute llvm:instcombine missed-optimization
#139786 opened May 13, 2025 by Cancelll
1
@Charukesh827
7
Missed Optimization: -(x & c1) >> shamt | -(x & c1) —> x & c1 ? -1 : 0 when 2^shamt > c1 and shamt ≤ bitwidth(x)/2 llvm:instcombine missed-optimization
#139641 opened May 12, 2025 by Cancelll
1
[InstSimplify] Optimize maximumnum and minimumnum backend:AMDGPU llvm:analysis llvm:instcombine llvm:ir llvm:transforms
#139581 opened May 12, 2025 by LewisCrawford Loading…
22
Missed optimization for unaligned store via shifts backend:AArch64 llvm:instcombine missed-optimization rust Rust language
#139441 opened May 11, 2025 by 0f-0b
1
[InstCombine] Missing algebraic fold for handwritten bitwise AND llvm:instcombine llvm:transforms missed-optimization
#138650 opened May 6, 2025 by antoniofrighetto
Missed optimization: conditional store of zext(i1) not folded to constant zero when i1 is known false llvm:instcombine missed-optimization
#138636 opened May 6, 2025 by GINN-Imp
[InstCombine] Fold (X == 0 ? Y : 0) | X to X == 0 ? Y : X llvm:instcombine llvm:transforms
#138373 opened May 3, 2025 by YLChenZ Loading…
1
23
Funnel shift in 64-bit doesn't get matched to an intrinsic good first issue https://github.com/llvm/llvm-project/contribute llvm:instcombine
#138334 opened May 2, 2025 by AZero13
1
@sallto
9
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