diff options
| -rw-r--r-- | llvm/lib/Analysis/InstructionSimplify.cpp | 3 | ||||
| -rw-r--r-- | llvm/test/Transforms/InstSimplify/gep.ll | 14 |
2 files changed, 16 insertions, 1 deletions
diff --git a/llvm/lib/Analysis/InstructionSimplify.cpp b/llvm/lib/Analysis/InstructionSimplify.cpp index 118579d5b72..9f3b2876afe 100644 --- a/llvm/lib/Analysis/InstructionSimplify.cpp +++ b/llvm/lib/Analysis/InstructionSimplify.cpp @@ -2837,7 +2837,8 @@ static Value *SimplifyGEPInst(ArrayRef<Value *> Ops, const Query &Q, unsigned) { return Constant::getNullValue(GEPTy); Value *Temp; if (match(P, m_PtrToInt(m_Value(Temp)))) - return Temp; + if (Temp->getType() == GEPTy) + return Temp; return nullptr; }; diff --git a/llvm/test/Transforms/InstSimplify/gep.ll b/llvm/test/Transforms/InstSimplify/gep.ll index d1704bf80bc..49a97f133ce 100644 --- a/llvm/test/Transforms/InstSimplify/gep.ll +++ b/llvm/test/Transforms/InstSimplify/gep.ll @@ -64,3 +64,17 @@ define i64* @test6(i64* %b) { ; CHECK-LABEL: @test6 ; CHECK-NEXT: ret i64* null } + +define i8* @test7(i8* %b, i8** %e) { + %e_ptr = ptrtoint i8** %e to i64 + %b_ptr = ptrtoint i8* %b to i64 + %sub = sub i64 %e_ptr, %b_ptr + %gep = getelementptr inbounds i8* %b, i64 %sub + ret i8* %gep +; CHECK-LABEL: @test7 +; CHECK-NEXT: ptrtoint +; CHECK-NEXT: ptrtoint +; CHECK-NEXT: sub +; CHECK-NEXT: getelementptr +; CHECK-NEXT: ret +} |
