Comments (4)
olvaffe
commented on June 2, 2024
#1340 helps when the data types are scalar. But it does not help when the data types are vectors.
Passing -O0 to clspv does not stop it from adding the two early InstCombinePass too :(
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rjodinchr
commented on June 2, 2024
Yes -O0 is not really used in clspv (#1228 (comment)).
Maybe we should consider adding something in https://github.com/google/clspv/blob/main/lib/UndoInstCombinePass.cpp?
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oscarbg
commented on June 2, 2024
@olvaffe interesting.. can share perf numbers in clpeak scalar tests with and without your patch? to get an idea of expexted perf speedups..
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olvaffe
commented on June 2, 2024
The perf numbers doubled for short and char. But I also needed to teach mesa to replace (x + 1) * y by x * y + y, for that to be identified as MAD.
It sounds like UndoInstCombinePass.cpp might be a better place to undo the combining. I can certainly look into that.
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Related Issues (20)
- Loads of i32s are fragmented into 4 bytes HOT 3
- how can I cross compile clspv in x86 for risc-v HOT 1
- Loads and Stores of i32s from offset addresses are fragmented HOT 1
- Loads and Stores from offset addresses are fragmented HOT 5
- Implement compatibility for external LLVM-IL HOT 15
- Clspv Fragments access to global memory by the Smallest access size
- Improve `-cl-mad-enable` support
- Segfault with default initialization
- Issue with C++ references
- Error in LinkBuiltinLibrary HOT 5
- -mfmt=c is not a valid option HOT 3
- Addrspace cast lowering pass creates invalid IR for intrinsic calls
- Bitcast lost due to llvm's opaque pointer HOT 4
- Crash with structures containing generic pointers
- LowerAddrSpaceCast cannot handle multiple llvm.memcpy
- Always generate MemoryAccessAlignedMask for loads/stores
- physical_ptrtoint tests failing
- Invalid OpPtrAccessChain into a Function Storage pointer
- Handle PHINode in LowerAddrSpaceCast better
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