Fixes for Julia 1.4: disable DI on LLVM 8.0.

Author: maleadt

src/CUDAnative.jl

@@ -83,6 +83,11 @@ function __init__()
             error("LLVM $llvm_version incompatible with Julia's LLVM $julia_llvm_version")
         end
 
+        if v"8.0" <= llvm_version < v"9.0"
+            # NOTE: corresponding functionality in irgen.jl
+            silent || @warn "LLVM pre-9.0 detected, disabling debug info emission for CUDA kernels"
+        end
+
 
         # CUDA
 

src/compiler/irgen.jl

@@ -137,10 +137,14 @@ function compile_method_instance(job::CompilerJob, method_instance::Core.MethodI
         debug_info_kind = if Base.JLOptions().debug_level == 0
             LLVM.API.LLVMDebugEmissionKindNoDebug
         elseif Base.JLOptions().debug_level == 1
-            LLVM.API.LLVMDebugEmissionKindDebugDirectivesOnly
+            LLVM.API.LLVMDebugEmissionKindLineTablesOnly
         elseif Base.JLOptions().debug_level >= 2
             LLVM.API.LLVMDebugEmissionKindFullDebug
         end
+        if LLVM.version() < v"9.0"
+            # NOTE: corresponding warning in __init__
+            debug_info_kind = LLVM.API.LLVMDebugEmissionKindNoDebug
+        end
         push!(param_kwargs, :debug_info_kind => Cint(debug_info_kind))
     end
     params = Base.CodegenParams(;param_kwargs...)

test/codegen.jl

@@ -33,7 +33,6 @@ end
     # plain exceptions should get lowered to a call to the CUDAnative run-time
     @test occursin("ptx_report_exception", ir)
     # not a jl_throw referencing a jl_value_t representing the exception
-    @test !occursin("jl_value_t", ir)
     @test !occursin("jl_throw", ir)
 end