Index: lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp =================================================================== --- lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp +++ lib/Target/AMDGPU/AMDGPUAsmPrinter.cpp @@ -783,15 +783,19 @@ emitRuntimeMDIntValue(OutStreamer, RuntimeMD::KeyMDVersion, RuntimeMD::MDVersion << 8 | RuntimeMD::MDRevision, 2); if (auto MD = M.getNamedMetadata("opencl.ocl.version")) { - emitRuntimeMDIntValue(OutStreamer, RuntimeMD::KeyLanguage, - RuntimeMD::OpenCL_C, 1); - auto Node = MD->getOperand(0); - unsigned short Major = mdconst::extract(Node->getOperand(0)) - ->getZExtValue(); - unsigned short Minor = mdconst::extract(Node->getOperand(1)) - ->getZExtValue(); - emitRuntimeMDIntValue(OutStreamer, RuntimeMD::KeyLanguageVersion, - Major * 100 + Minor * 10, 2); + if (MD->getNumOperands()) { + auto Node = MD->getOperand(0); + if (Node->getNumOperands() > 1) { + emitRuntimeMDIntValue(OutStreamer, RuntimeMD::KeyLanguage, + RuntimeMD::OpenCL_C, 1); + unsigned short Major = mdconst::extract(Node->getOperand(0)) + ->getZExtValue(); + unsigned short Minor = mdconst::extract(Node->getOperand(1)) + ->getZExtValue(); + emitRuntimeMDIntValue(OutStreamer, RuntimeMD::KeyLanguageVersion, + Major * 100 + Minor * 10, 2); + } + } } } Index: test/CodeGen/AMDGPU/invalid-opencl-version-metadata1.ll =================================================================== --- /dev/null +++ test/CodeGen/AMDGPU/invalid-opencl-version-metadata1.ll @@ -0,0 +1,8 @@ +; RUN: llc -mtriple=amdgcn--amdhsa < %s | FileCheck %s +; check llc does not crash for invalid opencl version metadata + +; CHECK: .section .AMDGPU.runtime_metadata +; CHECK-NEXT: .byte 1 +; CHECK-NEXT: .short 256 + +!opencl.ocl.version = !{} Index: test/CodeGen/AMDGPU/invalid-opencl-version-metadata2.ll =================================================================== --- /dev/null +++ test/CodeGen/AMDGPU/invalid-opencl-version-metadata2.ll @@ -0,0 +1,9 @@ +; RUN: llc -mtriple=amdgcn--amdhsa < %s | FileCheck %s +; check llc does not crash for invalid opencl version metadata + +; CHECK: .section .AMDGPU.runtime_metadata +; CHECK-NEXT: .byte 1 +; CHECK-NEXT: .short 256 + +!opencl.ocl.version = !{!0} +!0 = !{} Index: test/CodeGen/AMDGPU/invalid-opencl-version-metadata3.ll =================================================================== --- /dev/null +++ test/CodeGen/AMDGPU/invalid-opencl-version-metadata3.ll @@ -0,0 +1,9 @@ +; RUN: llc -mtriple=amdgcn--amdhsa < %s | FileCheck %s +; check llc does not crash for invalid opencl version metadata + +; CHECK: .section .AMDGPU.runtime_metadata +; CHECK-NEXT: .byte 1 +; CHECK-NEXT: .short 256 + +!opencl.ocl.version = !{!0} +!0 = !{i32 1}