diff options
| -rw-r--r-- | llvm/lib/Transforms/InstCombine/InstructionCombining.cpp | 10 | ||||
| -rw-r--r-- | llvm/test/Transforms/InstCombine/getelementptr.ll | 11 |
2 files changed, 16 insertions, 5 deletions
diff --git a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp index ebc1ea71e44..5b5c99aca00 100644 --- a/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp +++ b/llvm/lib/Transforms/InstCombine/InstructionCombining.cpp @@ -1655,14 +1655,14 @@ Instruction *InstCombiner::visitGetElementPtrInst(GetElementPtrInst &GEP) { } } - // Handle gep(bitcast x) and gep(gep x, 0, 0, 0). - Value *StrippedPtr = PtrOp->stripPointerCasts(); - PointerType *StrippedPtrTy = dyn_cast<PointerType>(StrippedPtr->getType()); - // We do not handle pointer-vector geps here. - if (!StrippedPtrTy) + if (GEP.getType()->isVectorTy()) return nullptr; + // Handle gep(bitcast x) and gep(gep x, 0, 0, 0). + Value *StrippedPtr = PtrOp->stripPointerCasts(); + PointerType *StrippedPtrTy = cast<PointerType>(StrippedPtr->getType()); + if (StrippedPtr != PtrOp) { bool HasZeroPointerIndex = false; if (ConstantInt *C = dyn_cast<ConstantInt>(GEP.getOperand(1))) diff --git a/llvm/test/Transforms/InstCombine/getelementptr.ll b/llvm/test/Transforms/InstCombine/getelementptr.ll index 6e2ac92b93c..de8190da01c 100644 --- a/llvm/test/Transforms/InstCombine/getelementptr.ll +++ b/llvm/test/Transforms/InstCombine/getelementptr.ll @@ -931,4 +931,15 @@ define i32 addrspace(1)* @ascast_0_0_gep([128 x i32]* %p) nounwind { ret i32 addrspace(1)* %x } +define <2 x i32*> @PR32414(i32** %ptr) { +; CHECK-LABEL: @PR32414( +; CHECK-NEXT: [[TMP0:%.*]] = bitcast i32** %ptr to i32* +; CHECK-NEXT: [[TMP1:%.*]] = getelementptr inbounds i32, i32* [[TMP0]], <2 x i64> <i64 0, i64 1> +; CHECK-NEXT: ret <2 x i32*> [[TMP1]] +; + %tmp0 = bitcast i32** %ptr to i32* + %tmp1 = getelementptr inbounds i32, i32* %tmp0, <2 x i64> <i64 0, i64 1> + ret <2 x i32*> %tmp1 +} + ; CHECK: attributes [[NUW]] = { nounwind } |
