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| author | Ruiling, Song <ruiling.song@amd.com> | 2025-09-02 21:50:47 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-09-02 21:50:47 +0800 |
| commit | 45dec71725bd57831051c27e43da698c23de1a52 (patch) | |
| tree | a949956e79338aed79a0352d128edaf4ec6297f1 /llvm/lib/IR/Value.cpp | |
| parent | 89f53af3fffed3e41167fbb7bc10d4885cd97c7f (diff) | |
| download | llvm-45dec71725bd57831051c27e43da698c23de1a52.zip llvm-45dec71725bd57831051c27e43da698c23de1a52.tar.gz llvm-45dec71725bd57831051c27e43da698c23de1a52.tar.bz2 | |
[IR] Allow nofree metadata to inttoptr (#153149)
Our GPU compiler usually construct pointers through inttoptr. The memory
was pre-allocated before the shader function execution and remains valid
through the execution of the shader function. This brings back the
expected behavior of instruction hoisting for the test
`hoist-speculatable-load.ll`, which was broken by #126117.
Diffstat (limited to 'llvm/lib/IR/Value.cpp')
| -rw-r--r-- | llvm/lib/IR/Value.cpp | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/IR/Value.cpp b/llvm/lib/IR/Value.cpp index 5928c89..4e8f359 100644 --- a/llvm/lib/IR/Value.cpp +++ b/llvm/lib/IR/Value.cpp @@ -836,6 +836,9 @@ bool Value::canBeFreed() const { return false; } + if (isa<IntToPtrInst>(this) && getMetadata(LLVMContext::MD_nofree)) + return false; + const Function *F = nullptr; if (auto *I = dyn_cast<Instruction>(this)) F = I->getFunction(); |