diff options
Diffstat (limited to 'llvm/lib/Target/AMDGPU/AMDGPULateCodeGenPrepare.cpp')
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPULateCodeGenPrepare.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPULateCodeGenPrepare.cpp b/llvm/lib/Target/AMDGPU/AMDGPULateCodeGenPrepare.cpp index 38718c4..7504f1a 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPULateCodeGenPrepare.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPULateCodeGenPrepare.cpp @@ -150,7 +150,10 @@ public: if (!CVisited.insert(CII).second) continue; - if (CII->getParent() == II->getParent() && !IsLookThru(II)) + // Same-BB filter must look at the *user*; and allow non-lookthrough + // users when the def is a PHI (loop-header pattern). + if (CII->getParent() == II->getParent() && !IsLookThru(CII) && + !isa<PHINode>(II)) continue; if (isOpLegal(CII)) |