diff options
| author | Yingwei Zheng <dtcxzyw2333@gmail.com> | 2025-07-26 00:23:56 +0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2025-07-26 00:23:56 +0800 |
| commit | 2d0ca09305fcece75e2c501f1ec74aa6eada69a0 (patch) | |
| tree | a980dc7f025cecd2cec0f498b4978c38a1379aaf /llvm/lib/CodeGen/CodeGenPrepare.cpp | |
| parent | 07967d4af854e50f94ce217788fa75c3e7e9ea86 (diff) | |
| download | llvm-2d0ca09305fcece75e2c501f1ec74aa6eada69a0.zip llvm-2d0ca09305fcece75e2c501f1ec74aa6eada69a0.tar.gz llvm-2d0ca09305fcece75e2c501f1ec74aa6eada69a0.tar.bz2 | |
[CodeGenPrepare] Make sure that `AddOffset` is also a loop invariant (#150625)
Closes https://github.com/llvm/llvm-project/issues/150611.
Diffstat (limited to 'llvm/lib/CodeGen/CodeGenPrepare.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/CodeGenPrepare.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/CodeGenPrepare.cpp b/llvm/lib/CodeGen/CodeGenPrepare.cpp index c21058c..416c56d 100644 --- a/llvm/lib/CodeGen/CodeGenPrepare.cpp +++ b/llvm/lib/CodeGen/CodeGenPrepare.cpp @@ -2095,6 +2095,10 @@ static bool isRemOfLoopIncrementWithLoopInvariant( if (!L->isLoopInvariant(RemAmt)) return false; + // Only works if the AddOffset is a loop invaraint + if (AddOffset && !L->isLoopInvariant(AddOffset)) + return false; + // Is the PHI a loop increment? auto LoopIncrInfo = getIVIncrement(PN, LI); if (!LoopIncrInfo) |