[Flang-RT] No flang hostdevice runtime flag #1756
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DominikAdamski
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estewart08,
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dpalermo
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Dec 10, 2025
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Looks good on 2025-12-10 x-aomp testing
dpalermo
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Dec 10, 2025
) ## Motivation Reduce linking time by embedding GPU LLVM IR code for Flang runtime. ## Technical Details Modified Flang runtime (added ifdefs to eliminate host-specific code from GPU compilation). ## Test Plan Checked smoke-fort-dev tests with new GPU Flang RT and the old flang_rt.hostdevice. ## Test Result I was able to compile and successfully run tests without flang_rt.hostdevice flag together with: ROCm/aomp#1756
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Merge only with: ROCm/llvm-project#757
Motivation
Modify aomp scripts to test PR: ROCm/llvm-project#757
Technical Details
This PR adds required changes to build GPU LLVM IR Flang runtime.
Test Plan
Test procedure:
a) (Optional) Build flang_rt.hostdevice if you want to use old
-lflang_rt.hostdeviceMake sure, you built flang_rt.hostdevice (point 3a), and launch smoke_fort_dev tests:
Test Result
No regression for smoke-fort-dev.