[SYCL][NFCI] Move default optimization level configuration #7885
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Right now the front-end compiler modifies default optimization level in SYCL device compilation mode (upstream clang uses O0, whereas DPC++ uses O2). As some of CodeGen module patches landed to upstream, this difference causes conflicts and regresions when we pull changes from the upstream to the `sycl` branch. Current optimization level configuration is modeled after OpenCL compiler, which is a JIT compiler, so it doesn't use clang Driver. For DPC++ compiler it's more reasonable to make this type of changes in the driver to avoid significant divergence in LIT tests.
Fznamznon
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Jan 2, 2023
Fznamznon
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Jan 3, 2023
Fznamznon
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Jan 3, 2023
smanna12
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Jan 3, 2023
premanandrao
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Jan 4, 2023
elizabethandrews
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Jan 4, 2023
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@intel/dpcpp-clang-driver-reviewers, could you take a look, please? |
mdtoguchi
reviewed
Jan 4, 2023
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Pre-commit failure on AMDGPU is an issue in the test that will be fixed with intel/llvm-test-suite#1487. |
whitneywhtsang
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Jan 7, 2023
…ntel#7885)" This reverts commit 102e154.
whitneywhtsang
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Jan 13, 2023
…ation (intel#7885)"" This reverts commit 2c2a529.
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Right now the front-end compiler modifies default optimization level in SYCL device compilation mode (upstream clang uses O0, whereas DPC++ uses O2). As some of CodeGen module patches landed to upstream, this difference causes conflicts and regresions when we pull changes from the upstream to the
syclbranch.Current optimization level configuration is modeled after OpenCL compiler, which is a JIT compiler, so it doesn't use clang Driver. For DPC++ compiler it's more reasonable to make this type of changes in the driver to avoid significant divergence in LIT tests.