llvm-project
[AMDGPU][ISel] Reduce `f64` compare to integer compare of upper half
#188356

Merged

[AMDGPU][ISel] Reduce `f64` compare to integer compare of upper half #188356

zGoldthorpe merged 16 commits into llvm:main from zGoldthorpe:setcc-f64

[AMDGPU][ISel] Reduce `f64` compare to integer compare of upper half.

a2b06481

Updated lit tests.

6c6a90a9

zGoldthorpe requested a review from

jayfoad 45 days ago

zGoldthorpe requested a review from

arsenm 45 days ago

zGoldthorpe requested a review from

rampitec 45 days ago

llvmbot added backend:AMDGPU

arsenm commented on 2026-03-24

Specified target for test.

75ee82de

arsenm commented on 2026-03-24

Helper function

3f5d5827

Add `isKnownNeverNaN` check

02cc106a

Moved bithacking to `isKnownNeverNaN`

a1ca68e1

llvmbot added llvm:SelectionDAG

Revert local modifications to `isKnownNeverNaN`.

61b2b3a3

arsenm added floating-point

arsenm commented on 2026-03-27

Removed unnecessary references.

8f325cd5

Merge branch 'main' into setcc-f64

81522536

Replace bit hacking with `KnownFPClass`

1d2ab5a2

Update main lit test

399acb0f

Merge branch 'main' into setcc-f64

f4e1cc25

arsenm commented on 2026-04-02

Infer `KnownFPClass` from `KnownBits` via bitcast.

d00916ca

Try RHS first.

ed62c81f

arsenm approved these changes on 2026-04-02

Merge branch 'main' into setcc-f64

50047502

Hoist LHS sign check outside of switch.

421e1553

arsenm approved these changes on 2026-04-08

zGoldthorpe merged f65341cc into main 31 days ago

zGoldthorpe deleted the setcc-f64 branch 31 days ago

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arsenm

RKSimon

jayfoad

rampitec

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llvm-project [AMDGPU][ISel] Reduce `f64` compare to integer compare of upper half #188356 Merged

[AMDGPU][ISel] Reduce `f64` compare to integer compare of upper half #188356

llvm-project
[AMDGPU][ISel] Reduce `f64` compare to integer compare of upper half
#188356

Merged