diff options
| -rw-r--r-- | llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp | 4 | ||||
| -rw-r--r-- | llvm/test/CodeGen/AMDGPU/addrspacecast-captured.ll | 47 |
2 files changed, 51 insertions, 0 deletions
diff --git a/llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp b/llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp index 5de73698323..b78777f391e 100644 --- a/llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp +++ b/llvm/lib/Target/AMDGPU/AMDGPUPromoteAlloca.cpp @@ -21,6 +21,7 @@ #include "llvm/ADT/StringRef.h" #include "llvm/ADT/Triple.h" #include "llvm/ADT/Twine.h" +#include "llvm/Analysis/CaptureTracking.h" #include "llvm/Analysis/ValueTracking.h" #include "llvm/IR/Attributes.h" #include "llvm/IR/BasicBlock.h" @@ -608,6 +609,9 @@ bool AMDGPUPromoteAlloca::collectUsesWithPtrTypes( } if (UseInst->getOpcode() == Instruction::AddrSpaceCast) { + // Give up if the pointer may be captured. + if (PointerMayBeCaptured(UseInst, true, true)) + return false; // Don't collect the users of this. WorkList.push_back(User); continue; diff --git a/llvm/test/CodeGen/AMDGPU/addrspacecast-captured.ll b/llvm/test/CodeGen/AMDGPU/addrspacecast-captured.ll new file mode 100644 index 00000000000..481a3e2b31b --- /dev/null +++ b/llvm/test/CodeGen/AMDGPU/addrspacecast-captured.ll @@ -0,0 +1,47 @@ +; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -mcpu=kaveri -amdgpu-promote-alloca < %s | FileCheck %s + +; Nothing should be done if the addrspacecast is captured. + +declare void @consume_ptr2int(i32) #0 + +; CHECK-LABEL: @addrspacecast_captured( +; CHECK: %data = alloca i32, align 4 +; CHECK: %cast = addrspacecast i32* %data to i32 addrspace(4)* +; CHECK: %ptr2int = ptrtoint i32 addrspace(4)* %cast to i32 +; CHECK: store i32 %ptr2int, i32 addrspace(1)* %out +define void @addrspacecast_captured(i32 addrspace(1)* %out) #0 { +entry: + %data = alloca i32, align 4 + %cast = addrspacecast i32* %data to i32 addrspace(4)* + %ptr2int = ptrtoint i32 addrspace(4)* %cast to i32 + store i32 %ptr2int, i32 addrspace(1)* %out + ret void +} + +; CHECK-LABEL: @addrspacecast_captured_store( +; CHECK: %data = alloca i32, align 4 +; CHECK: %cast = addrspacecast i32* %data to i32 addrspace(4)* +; CHECK: store i32 addrspace(4)* %cast, i32 addrspace(4)* addrspace(1)* %out +define void @addrspacecast_captured_store(i32 addrspace(4)* addrspace(1)* %out) #0 { +entry: + %data = alloca i32, align 4 + %cast = addrspacecast i32* %data to i32 addrspace(4)* + store i32 addrspace(4)* %cast, i32 addrspace(4)* addrspace(1)* %out + ret void +} + +; CHECK-LABEL: @addrspacecast_captured_call( +; CHECK: %data = alloca i32, align 4 +; CHECK: %cast = addrspacecast i32* %data to i32 addrspace(4)* +; CHECK: %ptr2int = ptrtoint i32 addrspace(4)* %cast to i32 +; CHECK: call void @consume_ptr2int(i32 %ptr2int) +define void @addrspacecast_captured_call() #0 { +entry: + %data = alloca i32, align 4 + %cast = addrspacecast i32* %data to i32 addrspace(4)* + %ptr2int = ptrtoint i32 addrspace(4)* %cast to i32 + call void @consume_ptr2int(i32 %ptr2int) + ret void +} + +attributes #0 = { nounwind } |
